*/
#define DEBUG_SUBSYSTEM S_LLITE
-#include <linux/lustre_dlm.h>
-#include <linux/lustre_lite.h>
+#include <lustre_dlm.h>
+#include <lustre_lite.h>
+#include <lustre_mdc.h>
#include <linux/pagemap.h>
#include <linux/file.h>
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-#include <linux/lustre_compat25.h>
-#endif
#include "llite_internal.h"
-int ll_mdc_close(struct obd_export *mdc_exp, struct inode *inode,
- struct file *file)
+/* also used by llite/special.c:ll_special_open() */
+struct ll_file_data *ll_file_data_get(void)
+{
+ struct ll_file_data *fd;
+
+ OBD_SLAB_ALLOC_PTR(fd, ll_file_data_slab);
+ return fd;
+}
+
+static void ll_file_data_put(struct ll_file_data *fd)
+{
+ if (fd != NULL)
+ OBD_SLAB_FREE_PTR(fd, ll_file_data_slab);
+}
+
+void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
+ struct lustre_handle *fh)
+{
+ op_data->op_fid1 = ll_i2info(inode)->lli_fid;
+ op_data->op_attr.ia_mode = inode->i_mode;
+ op_data->op_attr.ia_atime = inode->i_atime;
+ op_data->op_attr.ia_mtime = inode->i_mtime;
+ op_data->op_attr.ia_ctime = inode->i_ctime;
+ op_data->op_attr.ia_size = i_size_read(inode);
+ op_data->op_attr_blocks = inode->i_blocks;
+ ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = inode->i_flags;
+ op_data->op_ioepoch = ll_i2info(inode)->lli_ioepoch;
+ memcpy(&op_data->op_handle, fh, sizeof(op_data->op_handle));
+ op_data->op_capa1 = ll_mdscapa_get(inode);
+}
+
+static void ll_prepare_close(struct inode *inode, struct md_op_data *op_data,
+ struct obd_client_handle *och)
+{
+ ENTRY;
+
+ op_data->op_attr.ia_valid = ATTR_MODE | ATTR_ATIME_SET |
+ ATTR_MTIME_SET | ATTR_CTIME_SET;
+
+ if (!(och->och_flags & FMODE_WRITE))
+ goto out;
+
+ if (!(ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) ||
+ !S_ISREG(inode->i_mode))
+ op_data->op_attr.ia_valid |= ATTR_SIZE | ATTR_BLOCKS;
+ else
+ ll_epoch_close(inode, op_data, &och, 0);
+
+out:
+ ll_pack_inode2opdata(inode, op_data, &och->och_fh);
+ EXIT;
+}
+
+static int ll_close_inode_openhandle(struct obd_export *md_exp,
+ struct inode *inode,
+ struct obd_client_handle *och)
{
- struct ll_file_data *fd = file->private_data;
+ struct obd_export *exp = ll_i2mdexp(inode);
+ struct md_op_data *op_data;
struct ptlrpc_request *req = NULL;
- struct obd_client_handle *och = &fd->fd_mds_och;
- struct obdo obdo;
- int rc;
+ struct obd_device *obd = class_exp2obd(exp);
+ int epoch_close = 1;
+ int seq_end = 0, rc;
ENTRY;
- /* clear group lock, if present */
- if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
- struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
- fd->fd_flags &= ~(LL_FILE_GROUP_LOCKED|LL_FILE_IGNORE_LOCK);
- rc = ll_extent_unlock(fd, inode, lsm, LCK_GROUP,
- &fd->fd_cwlockh);
+ if (obd == NULL) {
+ /*
+ * XXX: in case of LMV, is this correct to access
+ * ->exp_handle?
+ */
+ CERROR("Invalid MDC connection handle "LPX64"\n",
+ ll_i2mdexp(inode)->exp_handle.h_cookie);
+ GOTO(out, rc = 0);
}
- obdo.o_id = inode->i_ino;
- obdo.o_valid = OBD_MD_FLID;
- obdo_from_inode(&obdo, inode, OBD_MD_FLTYPE | OBD_MD_FLMODE |
- OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
- OBD_MD_FLATIME | OBD_MD_FLMTIME |
- OBD_MD_FLCTIME);
- if (0 /* ll_is_inode_dirty(inode) */) {
- obdo.o_flags = MDS_BFLAG_UNCOMMITTED_WRITES;
- obdo.o_valid |= OBD_MD_FLFLAGS;
- }
- rc = mdc_close(mdc_exp, &obdo, och, &req);
- if (rc == EAGAIN) {
- /* We are the last writer, so the MDS has instructed us to get
- * the file size and any write cookies, then close again. */
- //ll_queue_done_writing(inode);
- rc = 0;
+ /*
+ * here we check if this is forced umount. If so this is called on
+ * canceling "open lock" and we do not call md_close() in this case, as
+ * it will not be successful, as import is already deactivated.
+ */
+ if (obd->obd_force)
+ GOTO(out, rc = 0);
+
+ OBD_ALLOC_PTR(op_data);
+ if (op_data == NULL)
+ GOTO(out, rc = -ENOMEM); // XXX We leak openhandle and request here.
+
+ ll_prepare_close(inode, op_data, och);
+ epoch_close = (op_data->op_flags & MF_EPOCH_CLOSE);
+ rc = md_close(md_exp, op_data, och->och_mod, &req);
+ if (rc != -EAGAIN)
+ seq_end = 1;
+
+ if (rc == -EAGAIN) {
+ /* This close must have the epoch closed. */
+ LASSERT(exp->exp_connect_flags & OBD_CONNECT_SOM);
+ LASSERT(epoch_close);
+ /* MDS has instructed us to obtain Size-on-MDS attribute from
+ * OSTs and send setattr to back to MDS. */
+ rc = ll_sizeonmds_update(inode, och->och_mod,
+ &och->och_fh, op_data->op_ioepoch);
+ if (rc) {
+ CERROR("inode %lu mdc Size-on-MDS update failed: "
+ "rc = %d\n", inode->i_ino, rc);
+ rc = 0;
+ }
} else if (rc) {
CERROR("inode %lu mdc close failed: rc = %d\n",
inode->i_ino, rc);
}
+ ll_finish_md_op_data(op_data);
+
if (rc == 0) {
- rc = ll_objects_destroy(req, file->f_dentry->d_inode);
+ rc = ll_objects_destroy(req, inode);
if (rc)
CERROR("inode %lu ll_objects destroy: rc = %d\n",
inode->i_ino, rc);
}
- mdc_clear_open_replay_data(och);
- ptlrpc_req_finished(req);
- och->och_fh.cookie = DEAD_HANDLE_MAGIC;
- file->private_data = NULL;
- OBD_SLAB_FREE(fd, ll_file_data_slab, sizeof *fd);
+ EXIT;
+out:
+
+ if ((exp->exp_connect_flags & OBD_CONNECT_SOM) && !epoch_close &&
+ S_ISREG(inode->i_mode) && (och->och_flags & FMODE_WRITE)) {
+ ll_queue_done_writing(inode, LLIF_DONE_WRITING);
+ } else {
+ if (seq_end)
+ ptlrpc_close_replay_seq(req);
+ md_clear_open_replay_data(md_exp, och);
+ /* Free @och if it is not waiting for DONE_WRITING. */
+ och->och_fh.cookie = DEAD_HANDLE_MAGIC;
+ OBD_FREE_PTR(och);
+ }
+ if (req) /* This is close request */
+ ptlrpc_req_finished(req);
+ return rc;
+}
+
+int ll_md_real_close(struct inode *inode, int flags)
+{
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct obd_client_handle **och_p;
+ struct obd_client_handle *och;
+ __u64 *och_usecount;
+ int rc = 0;
+ ENTRY;
+
+ if (flags & FMODE_WRITE) {
+ och_p = &lli->lli_mds_write_och;
+ och_usecount = &lli->lli_open_fd_write_count;
+ } else if (flags & FMODE_EXEC) {
+ och_p = &lli->lli_mds_exec_och;
+ och_usecount = &lli->lli_open_fd_exec_count;
+ } else {
+ LASSERT(flags & FMODE_READ);
+ och_p = &lli->lli_mds_read_och;
+ och_usecount = &lli->lli_open_fd_read_count;
+ }
+
+ down(&lli->lli_och_sem);
+ if (*och_usecount) { /* There are still users of this handle, so
+ skip freeing it. */
+ up(&lli->lli_och_sem);
+ RETURN(0);
+ }
+ och=*och_p;
+ *och_p = NULL;
+ up(&lli->lli_och_sem);
+
+ if (och) { /* There might be a race and somebody have freed this och
+ already */
+ rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
+ inode, och);
+ }
+
+ RETURN(rc);
+}
+
+int ll_md_close(struct obd_export *md_exp, struct inode *inode,
+ struct file *file)
+{
+ struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
+ struct ll_inode_info *lli = ll_i2info(inode);
+ int rc = 0;
+ ENTRY;
+
+ /* clear group lock, if present */
+ if (unlikely(fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
+ struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
+ fd->fd_flags &= ~(LL_FILE_GROUP_LOCKED|LL_FILE_IGNORE_LOCK);
+ rc = ll_extent_unlock(fd, inode, lsm, LCK_GROUP,
+ &fd->fd_cwlockh);
+ }
+
+ /* Let's see if we have good enough OPEN lock on the file and if
+ we can skip talking to MDS */
+ if (file->f_dentry->d_inode) { /* Can this ever be false? */
+ int lockmode;
+ int flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_TEST_LOCK;
+ struct lustre_handle lockh;
+ struct inode *inode = file->f_dentry->d_inode;
+ ldlm_policy_data_t policy = {.l_inodebits={MDS_INODELOCK_OPEN}};
+
+ down(&lli->lli_och_sem);
+ if (fd->fd_omode & FMODE_WRITE) {
+ lockmode = LCK_CW;
+ LASSERT(lli->lli_open_fd_write_count);
+ lli->lli_open_fd_write_count--;
+ } else if (fd->fd_omode & FMODE_EXEC) {
+ lockmode = LCK_PR;
+ LASSERT(lli->lli_open_fd_exec_count);
+ lli->lli_open_fd_exec_count--;
+ } else {
+ lockmode = LCK_CR;
+ LASSERT(lli->lli_open_fd_read_count);
+ lli->lli_open_fd_read_count--;
+ }
+ up(&lli->lli_och_sem);
+
+ if (!md_lock_match(md_exp, flags, ll_inode2fid(inode),
+ LDLM_IBITS, &policy, lockmode,
+ &lockh)) {
+ rc = ll_md_real_close(file->f_dentry->d_inode,
+ fd->fd_omode);
+ }
+ } else {
+ CERROR("Releasing a file %p with negative dentry %p. Name %s",
+ file, file->f_dentry, file->f_dentry->d_name.name);
+ }
+
+ LUSTRE_FPRIVATE(file) = NULL;
+ ll_file_data_put(fd);
+ ll_capa_close(inode);
RETURN(rc);
}
+int lov_test_and_clear_async_rc(struct lov_stripe_md *lsm);
+
/* While this returns an error code, fput() the caller does not, so we need
* to make every effort to clean up all of our state here. Also, applications
* rarely check close errors and even if an error is returned they will not
{
struct ll_file_data *fd;
struct ll_sb_info *sbi = ll_i2sbi(inode);
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct lov_stripe_md *lsm = lli->lli_smd;
int rc;
ENTRY;
if (inode->i_sb->s_root == file->f_dentry)
RETURN(0);
- lprocfs_counter_incr(sbi->ll_stats, LPROC_LL_RELEASE);
- fd = (struct ll_file_data *)file->private_data;
+ ll_stats_ops_tally(sbi, LPROC_LL_RELEASE, 1);
+ fd = LUSTRE_FPRIVATE(file);
LASSERT(fd != NULL);
- rc = ll_mdc_close(sbi->ll_mdc_exp, inode, file);
+ /* don't do anything for / */
+ if (inode->i_sb->s_root == file->f_dentry) {
+ LUSTRE_FPRIVATE(file) = NULL;
+ ll_file_data_put(fd);
+ RETURN(0);
+ }
+
+ if (lsm)
+ lov_test_and_clear_async_rc(lsm);
+ lli->lli_async_rc = 0;
+
+ rc = ll_md_close(sbi->ll_md_exp, inode, file);
RETURN(rc);
}
int lmmsize, struct lookup_intent *itp)
{
struct ll_sb_info *sbi = ll_i2sbi(file->f_dentry->d_inode);
- struct lustre_handle lockh;
- struct mdc_op_data data;
struct dentry *parent = file->f_dentry->d_parent;
const char *name = file->f_dentry->d_name.name;
const int len = file->f_dentry->d_name.len;
+ struct md_op_data *op_data;
+ struct ptlrpc_request *req;
int rc;
if (!parent)
RETURN(-ENOENT);
- ll_prepare_mdc_op_data(&data, parent->d_inode, NULL, name, len, O_RDWR);
+ /* Usually we come here only for NFSD, and we want open lock.
+ But we can also get here with pre 2.6.15 patchless kernels, and in
+ that case that lock is also ok */
+ /* We can also get here if there was cached open handle in revalidate_it
+ * but it disappeared while we were getting from there to ll_file_open.
+ * But this means this file was closed and immediatelly opened which
+ * makes a good candidate for using OPEN lock */
+ /* If lmmsize & lmm are not 0, we are just setting stripe info
+ * parameters. No need for the open lock */
+ if (!lmm && !lmmsize)
+ itp->it_flags |= MDS_OPEN_LOCK;
+
+ op_data = ll_prep_md_op_data(NULL, parent->d_inode,
+ file->f_dentry->d_inode, name, len,
+ O_RDWR, LUSTRE_OPC_ANY, NULL);
+ if (IS_ERR(op_data))
+ RETURN(PTR_ERR(op_data));
+
+ rc = md_intent_lock(sbi->ll_md_exp, op_data, lmm, lmmsize, itp,
+ 0 /*unused */, &req, ll_md_blocking_ast, 0);
+ ll_finish_md_op_data(op_data);
+ if (rc == -ESTALE) {
+ /* reason for keep own exit path - don`t flood log
+ * with messages with -ESTALE errors.
+ */
+ if (!it_disposition(itp, DISP_OPEN_OPEN) ||
+ it_open_error(DISP_OPEN_OPEN, itp))
+ GOTO(out, rc);
+ ll_release_openhandle(file->f_dentry, itp);
+ GOTO(out_stale, rc);
+ }
+
+ if (rc != 0 || it_open_error(DISP_OPEN_OPEN, itp)) {
+ rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, itp);
+ CDEBUG(D_VFSTRACE, "lock enqueue: err: %d\n", rc);
+ GOTO(out, rc);
+ }
+
+ if (itp->d.lustre.it_lock_mode)
+ md_set_lock_data(sbi->ll_md_exp,
+ &itp->d.lustre.it_lock_handle,
+ file->f_dentry->d_inode);
+
+ rc = ll_prep_inode(&file->f_dentry->d_inode, req, DLM_REPLY_REC_OFF,
+ NULL);
+out:
+ ptlrpc_req_finished(itp->d.lustre.it_data);
+
+out_stale:
+ it_clear_disposition(itp, DISP_ENQ_COMPLETE);
+ ll_intent_drop_lock(itp);
- rc = mdc_enqueue(sbi->ll_mdc_exp, LDLM_IBITS, itp, LCK_PW, &data,
- &lockh, lmm, lmmsize, ldlm_completion_ast,
- ll_mdc_blocking_ast, parent->d_inode);
- if (rc < 0)
- CERROR("lock enqueue: err: %d\n", rc);
RETURN(rc);
}
-int ll_local_open(struct file *file, struct lookup_intent *it)
+static int ll_och_fill(struct obd_export *md_exp, struct ll_inode_info *lli,
+ struct lookup_intent *it, struct obd_client_handle *och)
{
struct ptlrpc_request *req = it->d.lustre.it_data;
- struct ll_inode_info *lli = ll_i2info(file->f_dentry->d_inode);
- struct ll_file_data *fd;
- struct mds_body *body;
- ENTRY;
+ struct mdt_body *body;
+
+ LASSERT(och);
+
+ body = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF, sizeof(*body));
+ /* reply already checked out */
+ LASSERT(body != NULL);
+ /* and swabbed in md_enqueue */
+ LASSERT(lustre_rep_swabbed(req, DLM_REPLY_REC_OFF));
+
+ memcpy(&och->och_fh, &body->handle, sizeof(body->handle));
+ och->och_magic = OBD_CLIENT_HANDLE_MAGIC;
+ och->och_fid = lli->lli_fid;
+ och->och_flags = it->it_flags;
+ lli->lli_ioepoch = body->ioepoch;
- body = lustre_msg_buf (req->rq_repmsg, 1, sizeof (*body));
- LASSERT (body != NULL); /* reply already checked out */
- LASSERT_REPSWABBED (req, 1); /* and swabbed down */
+ return md_set_open_replay_data(md_exp, och, req);
+}
+
+int ll_local_open(struct file *file, struct lookup_intent *it,
+ struct ll_file_data *fd, struct obd_client_handle *och)
+{
+ struct inode *inode = file->f_dentry->d_inode;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ ENTRY;
- LASSERT(!file->private_data);
+ LASSERT(!LUSTRE_FPRIVATE(file));
- OBD_SLAB_ALLOC(fd, ll_file_data_slab, SLAB_KERNEL, sizeof *fd);
- /* We can't handle this well without reorganizing ll_file_open and
- * ll_mdc_close, so don't even try right now. */
LASSERT(fd != NULL);
- memcpy(&fd->fd_mds_och.och_fh, &body->handle, sizeof(body->handle));
- fd->fd_mds_och.och_magic = OBD_CLIENT_HANDLE_MAGIC;
- file->private_data = fd;
- ll_readahead_init(file->f_dentry->d_inode, &fd->fd_ras);
+ if (och) {
+ struct ptlrpc_request *req = it->d.lustre.it_data;
+ struct mdt_body *body;
+ int rc;
+
+ rc = ll_och_fill(ll_i2sbi(inode)->ll_md_exp, lli, it, och);
+ if (rc)
+ RETURN(rc);
- lli->lli_io_epoch = body->io_epoch;
+ body = lustre_msg_buf(req->rq_repmsg,
+ DLM_REPLY_REC_OFF, sizeof(*body));
- mdc_set_open_replay_data(&fd->fd_mds_och, it->d.lustre.it_data);
+ if ((it->it_flags & FMODE_WRITE) &&
+ (body->valid & OBD_MD_FLSIZE))
+ {
+ CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID"\n",
+ lli->lli_ioepoch, PFID(&lli->lli_fid));
+ }
+ }
+ LUSTRE_FPRIVATE(file) = fd;
+ ll_readahead_init(inode, &fd->fd_ras);
+ fd->fd_omode = it->it_flags;
RETURN(0);
}
* stripe MD to the MDS, or try to destroy the objects if that fails.
*
* If we already have the stripe MD locally then we don't request it in
- * mdc_open(), by passing a lmm_size = 0.
+ * md_open(), by passing a lmm_size = 0.
*
* It is up to the application to ensure no other processes open this file
* in the O_LOV_DELAY_CREATE case, or the default striping pattern will be
struct lookup_intent *it, oit = { .it_op = IT_OPEN,
.it_flags = file->f_flags };
struct lov_stripe_md *lsm;
- struct ptlrpc_request *req;
+ struct ptlrpc_request *req = NULL;
+ struct obd_client_handle **och_p;
+ __u64 *och_usecount;
+ struct ll_file_data *fd;
int rc = 0;
ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
- inode->i_generation, inode);
+ CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), flags %o\n", inode->i_ino,
+ inode->i_generation, inode, file->f_flags);
/* don't do anything for / */
if (inode->i_sb->s_root == file->f_dentry)
RETURN(0);
+#ifdef HAVE_VFS_INTENT_PATCHES
it = file->f_it;
+#else
+ it = file->private_data; /* XXX: compat macro */
+ file->private_data = NULL; /* prevent ll_local_open assertion */
+#endif
+
+ fd = ll_file_data_get();
+ if (fd == NULL)
+ RETURN(-ENOMEM);
+
+ /* don't do anything for / */
+ if (inode->i_sb->s_root == file->f_dentry) {
+ LUSTRE_FPRIVATE(file) = fd;
+ RETURN(0);
+ }
if (!it || !it->d.lustre.it_disposition) {
+ /* Convert f_flags into access mode. We cannot use file->f_mode,
+ * because everything but O_ACCMODE mask was stripped from
+ * there */
+ if ((oit.it_flags + 1) & O_ACCMODE)
+ oit.it_flags++;
+ if (file->f_flags & O_TRUNC)
+ oit.it_flags |= FMODE_WRITE;
+
+ /* kernel only call f_op->open in dentry_open. filp_open calls
+ * dentry_open after call to open_namei that checks permissions.
+ * Only nfsd_open call dentry_open directly without checking
+ * permissions and because of that this code below is safe. */
+ if (oit.it_flags & FMODE_WRITE)
+ oit.it_flags |= MDS_OPEN_OWNEROVERRIDE;
+
+ /* We do not want O_EXCL here, presumably we opened the file
+ * already? XXX - NFS implications? */
+ oit.it_flags &= ~O_EXCL;
+
it = &oit;
- rc = ll_intent_file_open(file, NULL, 0, it);
- if (rc)
- GOTO(out, rc);
}
- lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_OPEN);
- rc = it_open_error(DISP_OPEN_OPEN, it);
- if (rc)
- GOTO(out, rc);
+ /* Let's see if we have file open on MDS already. */
+ if (it->it_flags & FMODE_WRITE) {
+ och_p = &lli->lli_mds_write_och;
+ och_usecount = &lli->lli_open_fd_write_count;
+ } else if (it->it_flags & FMODE_EXEC) {
+ och_p = &lli->lli_mds_exec_och;
+ och_usecount = &lli->lli_open_fd_exec_count;
+ } else {
+ och_p = &lli->lli_mds_read_och;
+ och_usecount = &lli->lli_open_fd_read_count;
+ }
+
+ down(&lli->lli_och_sem);
+ if (*och_p) { /* Open handle is present */
+ if (it_disposition(it, DISP_OPEN_OPEN)) {
+ /* Well, there's extra open request that we do not need,
+ let's close it somehow. This will decref request. */
+ rc = it_open_error(DISP_OPEN_OPEN, it);
+ if (rc) {
+ ll_file_data_put(fd);
+ GOTO(out_och_free, rc);
+ }
+ ll_release_openhandle(file->f_dentry, it);
+ lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats,
+ LPROC_LL_OPEN);
+ }
+ (*och_usecount)++;
- rc = ll_local_open(file, it);
- if (rc)
- LBUG();
+ rc = ll_local_open(file, it, fd, NULL);
+ if (rc) {
+ up(&lli->lli_och_sem);
+ ll_file_data_put(fd);
+ RETURN(rc);
+ }
+ } else {
+ LASSERT(*och_usecount == 0);
+ OBD_ALLOC(*och_p, sizeof (struct obd_client_handle));
+ if (!*och_p) {
+ ll_file_data_put(fd);
+ GOTO(out_och_free, rc = -ENOMEM);
+ }
+ (*och_usecount)++;
+ if (!it->d.lustre.it_disposition) {
+ it->it_flags |= O_CHECK_STALE;
+ rc = ll_intent_file_open(file, NULL, 0, it);
+ it->it_flags &= ~O_CHECK_STALE;
+ if (rc) {
+ ll_file_data_put(fd);
+ GOTO(out_och_free, rc);
+ }
+
+ /* Got some error? Release the request */
+ if (it->d.lustre.it_status < 0) {
+ req = it->d.lustre.it_data;
+ ptlrpc_req_finished(req);
+ }
+ md_set_lock_data(ll_i2sbi(inode)->ll_md_exp,
+ &it->d.lustre.it_lock_handle,
+ file->f_dentry->d_inode);
+ }
+ req = it->d.lustre.it_data;
+
+ /* md_intent_lock() didn't get a request ref if there was an
+ * open error, so don't do cleanup on the request here
+ * (bug 3430) */
+ /* XXX (green): Should not we bail out on any error here, not
+ * just open error? */
+ rc = it_open_error(DISP_OPEN_OPEN, it);
+ if (rc) {
+ ll_file_data_put(fd);
+ GOTO(out_och_free, rc);
+ }
+
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1);
+ rc = ll_local_open(file, it, fd, *och_p);
+ if (rc) {
+ up(&lli->lli_och_sem);
+ ll_file_data_put(fd);
+ GOTO(out_och_free, rc);
+ }
+ }
+ up(&lli->lli_och_sem);
+ /* Must do this outside lli_och_sem lock to prevent deadlock where
+ different kind of OPEN lock for this same inode gets cancelled
+ by ldlm_cancel_lru */
if (!S_ISREG(inode->i_mode))
GOTO(out, rc);
+ ll_capa_open(inode);
+
lsm = lli->lli_smd;
if (lsm == NULL) {
if (file->f_flags & O_LOV_DELAY_CREATE ||
}
file->f_flags &= ~O_LOV_DELAY_CREATE;
GOTO(out, rc);
- out:
- req = it->d.lustre.it_data;
+out:
ptlrpc_req_finished(req);
- if (rc == 0)
- ll_open_complete(inode);
+ if (req)
+ it_clear_disposition(it, DISP_ENQ_OPEN_REF);
+out_och_free:
+ if (rc) {
+ if (*och_p) {
+ OBD_FREE(*och_p, sizeof (struct obd_client_handle));
+ *och_p = NULL; /* OBD_FREE writes some magic there */
+ (*och_usecount)--;
+ }
+ up(&lli->lli_och_sem);
+ }
+
return rc;
}
/* Fills the obdo with the attributes for the inode defined by lsm */
-int ll_lsm_getattr(struct obd_export *exp, struct lov_stripe_md *lsm,
- struct obdo *oa)
+int ll_inode_getattr(struct inode *inode, struct obdo *obdo)
{
struct ptlrpc_request_set *set;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct lov_stripe_md *lsm = lli->lli_smd;
+
+ struct obd_info oinfo = { { { 0 } } };
int rc;
ENTRY;
LASSERT(lsm != NULL);
- memset(oa, 0, sizeof *oa);
- oa->o_id = lsm->lsm_object_id;
- oa->o_mode = S_IFREG;
- oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLSIZE |
- OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ | OBD_MD_FLMTIME |
- OBD_MD_FLCTIME;
+ oinfo.oi_md = lsm;
+ oinfo.oi_oa = obdo;
+ oinfo.oi_oa->o_id = lsm->lsm_object_id;
+ oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
+ oinfo.oi_oa->o_mode = S_IFREG;
+ oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
+ OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
+ OBD_MD_FLBLKSZ | OBD_MD_FLATIME |
+ OBD_MD_FLMTIME | OBD_MD_FLCTIME |
+ OBD_MD_FLGROUP;
+ oinfo.oi_capa = ll_mdscapa_get(inode);
set = ptlrpc_prep_set();
if (set == NULL) {
- CERROR ("ENOMEM allocing request set\n");
+ CERROR("can't allocate ptlrpc set\n");
rc = -ENOMEM;
} else {
- rc = obd_getattr_async(exp, oa, lsm, set);
+ rc = obd_getattr_async(ll_i2dtexp(inode), &oinfo, set);
if (rc == 0)
rc = ptlrpc_set_wait(set);
ptlrpc_set_destroy(set);
}
+ capa_put(oinfo.oi_capa);
if (rc)
RETURN(rc);
- oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ | OBD_MD_FLMTIME |
- OBD_MD_FLCTIME | OBD_MD_FLSIZE);
+ oinfo.oi_oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
+ OBD_MD_FLATIME | OBD_MD_FLMTIME |
+ OBD_MD_FLCTIME | OBD_MD_FLSIZE);
+
+ obdo_refresh_inode(inode, oinfo.oi_oa, oinfo.oi_oa->o_valid);
+ CDEBUG(D_INODE, "objid "LPX64" size %Lu, blocks %lu, blksize %lu\n",
+ lli->lli_smd->lsm_object_id, i_size_read(inode),
+ inode->i_blocks, inode->i_blksize);
RETURN(0);
}
{
struct ll_inode_info *lli = ll_i2info(inode);
struct lov_stripe_md *lsm = lli->lli_smd;
- struct obd_export *exp = ll_i2obdexp(inode);
+ struct obd_export *exp = ll_i2dtexp(inode);
struct {
char name[16];
struct ldlm_lock *lock;
ENTRY;
if (lsm->lsm_stripe_count == 1)
- RETURN(0);
+ GOTO(check, stripe = 0);
/* get our offset in the lov */
rc = obd_get_info(exp, sizeof(key), &key, &vallen, &stripe);
if (rc != 0) {
CERROR("obd_get_info: rc = %d\n", rc);
- LBUG();
+ RETURN(rc);
}
LASSERT(stripe < lsm->lsm_stripe_count);
+
+check:
+ if (lsm->lsm_oinfo[stripe]->loi_id != lock->l_resource->lr_name.name[0]||
+ lsm->lsm_oinfo[stripe]->loi_gr != lock->l_resource->lr_name.name[2]){
+ LDLM_ERROR(lock, "resource doesn't match object "LPU64"/"LPU64,
+ lsm->lsm_oinfo[stripe]->loi_id,
+ lsm->lsm_oinfo[stripe]->loi_gr);
+ RETURN(-ELDLM_NO_LOCK_DATA);
+ }
+
RETURN(stripe);
}
struct page *page;
int rc, rc2, discard = lock->l_flags & LDLM_FL_DISCARD_DATA;
struct lustre_handle lockh;
- ENTRY;
+ struct address_space *mapping = inode->i_mapping;
- memcpy(&tmpex, &lock->l_policy_data, sizeof(tmpex));
+ ENTRY;
+ tmpex = lock->l_policy_data;
CDEBUG(D_INODE|D_PAGE, "inode %lu(%p) ["LPU64"->"LPU64"] size: %llu\n",
inode->i_ino, inode, tmpex.l_extent.start, tmpex.l_extent.end,
- inode->i_size);
+ i_size_read(inode));
/* our locks are page granular thanks to osc_enqueue, we invalidate the
* whole page. */
- LASSERT((tmpex.l_extent.start & ~PAGE_CACHE_MASK) == 0);
- LASSERT(((tmpex.l_extent.end + 1) & ~PAGE_CACHE_MASK) == 0);
+ if ((tmpex.l_extent.start & ~CFS_PAGE_MASK) != 0 ||
+ ((tmpex.l_extent.end + 1) & ~CFS_PAGE_MASK) != 0)
+ LDLM_ERROR(lock, "lock not aligned on PAGE_SIZE %lu",
+ CFS_PAGE_SIZE);
+ LASSERT((tmpex.l_extent.start & ~CFS_PAGE_MASK) == 0);
+ LASSERT(((tmpex.l_extent.end + 1) & ~CFS_PAGE_MASK) == 0);
count = ~0;
skip = 0;
- start = tmpex.l_extent.start >> PAGE_CACHE_SHIFT;
- end = tmpex.l_extent.end >> PAGE_CACHE_SHIFT;
+ start = tmpex.l_extent.start >> CFS_PAGE_SHIFT;
+ end = tmpex.l_extent.end >> CFS_PAGE_SHIFT;
if (lsm->lsm_stripe_count > 1) {
- count = lsm->lsm_stripe_size >> PAGE_CACHE_SHIFT;
+ count = lsm->lsm_stripe_size >> CFS_PAGE_SHIFT;
skip = (lsm->lsm_stripe_count - 1) * count;
start += start/count * skip + stripe * count;
if (end != ~0)
end += end/count * skip + stripe * count;
}
- if (end < tmpex.l_extent.end >> PAGE_CACHE_SHIFT)
+ if (end < tmpex.l_extent.end >> CFS_PAGE_SHIFT)
end = ~0;
- i = (inode->i_size + PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT;
+ i = i_size_read(inode) ? (__u64)(i_size_read(inode) - 1) >>
+ CFS_PAGE_SHIFT : 0;
if (i < end)
end = i;
"count: %lu skip: %lu end: %lu%s\n", start, start % count,
count, skip, end, discard ? " (DISCARDING)" : "");
+ /* walk through the vmas on the inode and tear down mmaped pages that
+ * intersect with the lock. this stops immediately if there are no
+ * mmap()ed regions of the file. This is not efficient at all and
+ * should be short lived. We'll associate mmap()ed pages with the lock
+ * and will be able to find them directly */
+ for (i = start; i <= end; i += (j + skip)) {
+ j = min(count - (i % count), end - i + 1);
+ LASSERT(j > 0);
+ LASSERT(mapping);
+ if (ll_teardown_mmaps(mapping,
+ (__u64)i << CFS_PAGE_SHIFT,
+ ((__u64)(i+j) << CFS_PAGE_SHIFT) - 1) )
+ break;
+ }
+
/* this is the simplistic implementation of page eviction at
* cancelation. It is careful to get races with other page
* lockers handled correctly. fixes from bug 20 will make it
* more efficient by associating locks with pages and with
* batching writeback under the lock explicitly. */
for (i = start, j = start % count; i <= end;
- j++, i++, tmpex.l_extent.start += PAGE_CACHE_SIZE) {
+ j++, i++, tmpex.l_extent.start += CFS_PAGE_SIZE) {
if (j == count) {
CDEBUG(D_PAGE, "skip index %lu to %lu\n", i, i + skip);
i += skip;
tmpex.l_extent.start, lock->l_policy_data.l_extent.end,
start, i, end);
- if (!mapping_has_pages(inode->i_mapping)) {
+ if (!mapping_has_pages(mapping)) {
CDEBUG(D_INODE|D_PAGE, "nothing left\n");
break;
}
- conditional_schedule();
+ cond_resched();
- page = find_get_page(inode->i_mapping, i);
+ page = find_get_page(mapping, i);
if (page == NULL)
continue;
LL_CDEBUG_PAGE(D_PAGE, page, "lock page idx %lu ext "LPU64"\n",
/* page->mapping to check with racing against teardown */
if (!discard && clear_page_dirty_for_io(page)) {
rc = ll_call_writepage(inode, page);
- if (rc != 0)
- CERROR("writepage of page %p failed: %d\n",
- page, rc);
/* either waiting for io to complete or reacquiring
* the lock that the failed writepage released */
lock_page(page);
+ wait_on_page_writeback(page);
+ if (rc != 0) {
+ CERROR("writepage inode %lu(%p) of page %p "
+ "failed: %d\n", inode->i_ino, inode,
+ page, rc);
+ if (rc == -ENOSPC)
+ set_bit(AS_ENOSPC, &mapping->flags);
+ else
+ set_bit(AS_EIO, &mapping->flags);
+ }
}
- tmpex.l_extent.end = tmpex.l_extent.start + PAGE_CACHE_SIZE - 1;
- /* check to see if another DLM lock covers this page */
- ldlm_lock2handle(lock, &lockh);
- rc2 = ldlm_lock_match(NULL,
+ tmpex.l_extent.end = tmpex.l_extent.start + CFS_PAGE_SIZE - 1;
+ /* check to see if another DLM lock covers this page b=2765 */
+ rc2 = ldlm_lock_match(lock->l_resource->lr_namespace,
LDLM_FL_BLOCK_GRANTED|LDLM_FL_CBPENDING |
LDLM_FL_TEST_LOCK,
- NULL, 0, &tmpex, 0, &lockh);
- if (rc2 == 0 && page->mapping != NULL) {
- // checking again to account for writeback's lock_page()
+ &lock->l_resource->lr_name, LDLM_EXTENT,
+ &tmpex, LCK_PR | LCK_PW, &lockh);
+
+ if (rc2 <= 0 && page->mapping != NULL) {
+ struct ll_async_page *llap = llap_cast_private(page);
+ /* checking again to account for writeback's
+ * lock_page() */
LL_CDEBUG_PAGE(D_PAGE, page, "truncating\n");
+ if (llap)
+ ll_ra_accounting(llap, mapping);
ll_truncate_complete_page(page);
}
unlock_page(page);
struct inode *inode;
struct ll_inode_info *lli;
struct lov_stripe_md *lsm;
- __u32 stripe;
+ int stripe;
__u64 kms;
/* This lock wasn't granted, don't try to evict pages */
lsm = lli->lli_smd;
stripe = ll_lock_to_stripe_offset(inode, lock);
+ if (stripe < 0)
+ goto iput;
+
ll_pgcache_remove_extent(inode, lsm, lock, stripe);
- down(&inode->i_sem);
+ lov_stripe_lock(lsm);
+ lock_res_and_lock(lock);
kms = ldlm_extent_shift_kms(lock,
- lsm->lsm_oinfo[stripe].loi_kms);
-
- if (lsm->lsm_oinfo[stripe].loi_kms != kms)
+ lsm->lsm_oinfo[stripe]->loi_kms);
+
+ if (lsm->lsm_oinfo[stripe]->loi_kms != kms)
LDLM_DEBUG(lock, "updating kms from "LPU64" to "LPU64,
- lsm->lsm_oinfo[stripe].loi_kms, kms);
- lsm->lsm_oinfo[stripe].loi_kms = kms;
- up(&inode->i_sem);
- //ll_try_done_writing(inode);
+ lsm->lsm_oinfo[stripe]->loi_kms, kms);
+ lsm->lsm_oinfo[stripe]->loi_kms = kms;
+ unlock_res_and_lock(lock);
+ lov_stripe_unlock(lsm);
iput:
iput(inode);
break;
struct ll_inode_info *lli = ll_i2info(inode);
struct lustre_handle lockh = { 0 };
struct ost_lvb *lvb;
- __u32 stripe;
+ int stripe;
ENTRY;
if (flags & (LDLM_FL_BLOCK_WAIT | LDLM_FL_BLOCK_GRANTED |
LDLM_DEBUG(lock, "client-side async enqueue: granted/glimpsed");
stripe = ll_lock_to_stripe_offset(inode, lock);
+ if (stripe < 0)
+ goto iput;
if (lock->l_lvb_len) {
struct lov_stripe_md *lsm = lli->lli_smd;
lvb = lock->l_lvb_data;
lsm->lsm_oinfo[stripe].loi_rss = lvb->lvb_size;
- down(&inode->i_sem);
+ lock_res_and_lock(lock);
+ ll_inode_size_lock(inode, 1);
kms = MAX(lsm->lsm_oinfo[stripe].loi_kms, lvb->lvb_size);
kms = ldlm_extent_shift_kms(NULL, kms);
if (lsm->lsm_oinfo[stripe].loi_kms != kms)
LDLM_DEBUG(lock, "updating kms from "LPU64" to "LPU64,
lsm->lsm_oinfo[stripe].loi_kms, kms);
lsm->lsm_oinfo[stripe].loi_kms = kms;
- up(&inode->i_sem);
+ ll_inode_size_unlock(inode, 1);
+ unlock_res_and_lock(lock);
}
+iput:
iput(inode);
wake_up(&lock->l_waitq);
struct ptlrpc_request *req = reqp;
struct inode *inode = ll_inode_from_lock(lock);
struct ll_inode_info *lli;
+ struct lov_stripe_md *lsm;
struct ost_lvb *lvb;
- int rc, size = sizeof(*lvb), stripe = 0;
+ int rc, stripe;
+ int size[2] = { sizeof(struct ptlrpc_body), sizeof(*lvb) };
ENTRY;
if (inode == NULL)
lli = ll_i2info(inode);
if (lli == NULL)
GOTO(iput, rc = -ELDLM_NO_LOCK_DATA);
- if (lli->lli_smd == NULL)
+ lsm = lli->lli_smd;
+ if (lsm == NULL)
GOTO(iput, rc = -ELDLM_NO_LOCK_DATA);
/* First, find out which stripe index this lock corresponds to. */
- if (lli->lli_smd->lsm_stripe_count > 1)
- stripe = ll_lock_to_stripe_offset(inode, lock);
+ stripe = ll_lock_to_stripe_offset(inode, lock);
+ if (stripe < 0)
+ GOTO(iput, rc = -ELDLM_NO_LOCK_DATA);
- rc = lustre_pack_reply(req, 1, &size, NULL);
+ rc = lustre_pack_reply(req, 2, size, NULL);
if (rc) {
CERROR("lustre_pack_reply: %d\n", rc);
GOTO(iput, rc);
}
- lvb = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*lvb));
- lvb->lvb_size = lli->lli_smd->lsm_oinfo[stripe].loi_kms;
+ lvb = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*lvb));
+ lvb->lvb_size = lli->lli_smd->lsm_oinfo[stripe]->loi_kms;
+ lvb->lvb_mtime = LTIME_S(inode->i_mtime);
+ lvb->lvb_atime = LTIME_S(inode->i_atime);
+ lvb->lvb_ctime = LTIME_S(inode->i_ctime);
- LDLM_DEBUG(lock, "i_size: %llu -> stripe number %u -> kms "LPU64,
- inode->i_size, stripe, lvb->lvb_size);
- GOTO(iput, 0);
+ LDLM_DEBUG(lock, "i_size: %llu -> stripe number %u -> kms "LPU64
+ " atime "LPU64", mtime "LPU64", ctime "LPU64,
+ i_size_read(inode), stripe, lvb->lvb_size, lvb->lvb_mtime,
+ lvb->lvb_atime, lvb->lvb_ctime);
iput:
iput(inode);
/* These errors are normal races, so we don't want to fill the console
* with messages by calling ptlrpc_error() */
if (rc == -ELDLM_NO_LOCK_DATA)
- lustre_pack_reply(req, 0, NULL, NULL);
+ lustre_pack_reply(req, 1, NULL, NULL);
req->rq_status = rc;
return rc;
}
-__u64 lov_merge_size(struct lov_stripe_md *lsm, int kms);
-__u64 lov_merge_blocks(struct lov_stripe_md *lsm);
-__u64 lov_merge_mtime(struct lov_stripe_md *lsm, __u64 current_time);
+static void ll_merge_lvb(struct inode *inode)
+{
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct ll_sb_info *sbi = ll_i2sbi(inode);
+ struct ost_lvb lvb;
+ ENTRY;
+
+ ll_inode_size_lock(inode, 1);
+ inode_init_lvb(inode, &lvb);
+ obd_merge_lvb(sbi->ll_dt_exp, lli->lli_smd, &lvb, 0);
+ i_size_write(inode, lvb.lvb_size);
+ inode->i_blocks = lvb.lvb_blocks;
+ LTIME_S(inode->i_mtime) = lvb.lvb_mtime;
+ LTIME_S(inode->i_atime) = lvb.lvb_atime;
+ LTIME_S(inode->i_ctime) = lvb.lvb_ctime;
+ ll_inode_size_unlock(inode, 1);
+ EXIT;
+}
+
+int ll_local_size(struct inode *inode)
+{
+ ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct ll_sb_info *sbi = ll_i2sbi(inode);
+ struct lustre_handle lockh = { 0 };
+ int flags = 0;
+ int rc;
+ ENTRY;
+
+ if (lli->lli_smd->lsm_stripe_count == 0)
+ RETURN(0);
+
+ rc = obd_match(sbi->ll_dt_exp, lli->lli_smd, LDLM_EXTENT,
+ &policy, LCK_PR, &flags, inode, &lockh);
+ if (rc < 0)
+ RETURN(rc);
+ else if (rc == 0)
+ RETURN(-ENODATA);
+
+ ll_merge_lvb(inode);
+ obd_cancel(sbi->ll_dt_exp, lli->lli_smd, LCK_PR, &lockh);
+ RETURN(0);
+}
+
+int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm,
+ lstat_t *st)
+{
+ struct lustre_handle lockh = { 0 };
+ struct ldlm_enqueue_info einfo = { 0 };
+ struct obd_info oinfo = { { { 0 } } };
+ struct ost_lvb lvb;
+ int rc;
+
+ ENTRY;
+
+ einfo.ei_type = LDLM_EXTENT;
+ einfo.ei_mode = LCK_PR;
+ einfo.ei_cb_bl = ll_extent_lock_callback;
+ einfo.ei_cb_cp = ldlm_completion_ast;
+ einfo.ei_cb_gl = ll_glimpse_callback;
+ einfo.ei_cbdata = NULL;
+
+ oinfo.oi_policy.l_extent.end = OBD_OBJECT_EOF;
+ oinfo.oi_lockh = &lockh;
+ oinfo.oi_md = lsm;
+ oinfo.oi_flags = LDLM_FL_HAS_INTENT;
+
+ rc = obd_enqueue_rqset(sbi->ll_dt_exp, &oinfo, &einfo);
+ if (rc == -ENOENT)
+ RETURN(rc);
+ if (rc != 0) {
+ CERROR("obd_enqueue returned rc %d, "
+ "returning -EIO\n", rc);
+ RETURN(rc > 0 ? -EIO : rc);
+ }
+
+ lov_stripe_lock(lsm);
+ memset(&lvb, 0, sizeof(lvb));
+ obd_merge_lvb(sbi->ll_dt_exp, lsm, &lvb, 0);
+ st->st_size = lvb.lvb_size;
+ st->st_blocks = lvb.lvb_blocks;
+ st->st_mtime = lvb.lvb_mtime;
+ st->st_atime = lvb.lvb_atime;
+ st->st_ctime = lvb.lvb_ctime;
+ lov_stripe_unlock(lsm);
+
+ RETURN(rc);
+}
-/* NB: lov_merge_size will prefer locally cached writes if they extend the
+/* NB: obd_merge_lvb will prefer locally cached writes if they extend the
* file (because it prefers KMS over RSS when larger) */
-int ll_glimpse_size(struct inode *inode, struct ost_lvb *lvb)
+int ll_glimpse_size(struct inode *inode, int ast_flags)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct ll_sb_info *sbi = ll_i2sbi(inode);
- ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
struct lustre_handle lockh = { 0 };
- int rc, flags = LDLM_FL_HAS_INTENT;
+ struct ldlm_enqueue_info einfo = { 0 };
+ struct obd_info oinfo = { { { 0 } } };
+ int rc;
ENTRY;
+ if (lli->lli_flags & LLIF_MDS_SIZE_LOCK)
+ RETURN(0);
+
CDEBUG(D_DLMTRACE, "Glimpsing inode %lu\n", inode->i_ino);
- rc = obd_enqueue(sbi->ll_osc_exp, lli->lli_smd, LDLM_EXTENT, &policy,
- LCK_PR, &flags, ll_extent_lock_callback,
- ldlm_completion_ast, ll_glimpse_callback, inode,
- sizeof(*lvb), lustre_swab_ost_lvb, &lockh);
+ if (!lli->lli_smd) {
+ CDEBUG(D_DLMTRACE, "No objects for inode %lu\n", inode->i_ino);
+ RETURN(0);
+ }
+
+ /* NOTE: this looks like DLM lock request, but it may not be one. Due
+ * to LDLM_FL_HAS_INTENT flag, this is glimpse request, that
+ * won't revoke any conflicting DLM locks held. Instead,
+ * ll_glimpse_callback() will be called on each client
+ * holding a DLM lock against this file, and resulting size
+ * will be returned for each stripe. DLM lock on [0, EOF] is
+ * acquired only if there were no conflicting locks. */
+ einfo.ei_type = LDLM_EXTENT;
+ einfo.ei_mode = LCK_PR;
+ einfo.ei_cb_bl = ll_extent_lock_callback;
+ einfo.ei_cb_cp = ldlm_completion_ast;
+ einfo.ei_cb_gl = ll_glimpse_callback;
+ einfo.ei_cbdata = inode;
+
+ oinfo.oi_policy.l_extent.end = OBD_OBJECT_EOF;
+ oinfo.oi_lockh = &lockh;
+ oinfo.oi_md = lli->lli_smd;
+ oinfo.oi_flags = ast_flags | LDLM_FL_HAS_INTENT;
+
+ rc = obd_enqueue_rqset(sbi->ll_dt_exp, &oinfo, &einfo);
+ if (rc == -ENOENT)
+ RETURN(rc);
if (rc != 0) {
CERROR("obd_enqueue returned rc %d, returning -EIO\n", rc);
RETURN(rc > 0 ? -EIO : rc);
}
- lvb->lvb_size = lov_merge_size(lli->lli_smd, 0);
- inode->i_blocks = lov_merge_blocks(lli->lli_smd);
- //inode->i_mtime = lov_merge_mtime(lli->lli_smd, inode->i_mtime);
+ ll_merge_lvb(inode);
- CDEBUG(D_DLMTRACE, "glimpse: size: "LPU64", blocks: "LPU64"\n",
- lvb->lvb_size, lvb->lvb_blocks);
-
- obd_cancel(sbi->ll_osc_exp, lli->lli_smd, LCK_PR, &lockh);
+ CDEBUG(D_DLMTRACE, "glimpse: size: %llu, blocks: %lu\n",
+ i_size_read(inode), inode->i_blocks);
RETURN(rc);
}
int ast_flags)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
+ struct ost_lvb lvb;
+ struct ldlm_enqueue_info einfo = { 0 };
+ struct obd_info oinfo = { { { 0 } } };
int rc;
ENTRY;
- LASSERT(lockh->cookie == 0);
+ LASSERT(!lustre_handle_is_used(lockh));
+ LASSERT(lsm != NULL);
+
+ /* don't drop the mmapped file to LRU */
+ if (mapping_mapped(inode->i_mapping))
+ ast_flags |= LDLM_FL_NO_LRU;
/* XXX phil: can we do this? won't it screw the file size up? */
if ((fd && (fd->fd_flags & LL_FILE_IGNORE_LOCK)) ||
CDEBUG(D_DLMTRACE, "Locking inode %lu, start "LPU64" end "LPU64"\n",
inode->i_ino, policy->l_extent.start, policy->l_extent.end);
- rc = obd_enqueue(sbi->ll_osc_exp, lsm, LDLM_EXTENT, policy, mode,
- &ast_flags, ll_extent_lock_callback,
- ldlm_completion_ast, ll_glimpse_callback, inode,
- sizeof(struct ost_lvb), lustre_swab_ost_lvb, lockh);
+ einfo.ei_type = LDLM_EXTENT;
+ einfo.ei_mode = mode;
+ einfo.ei_cb_bl = ll_extent_lock_callback;
+ einfo.ei_cb_cp = ldlm_completion_ast;
+ einfo.ei_cb_gl = ll_glimpse_callback;
+ einfo.ei_cbdata = inode;
+
+ oinfo.oi_policy = *policy;
+ oinfo.oi_lockh = lockh;
+ oinfo.oi_md = lsm;
+ oinfo.oi_flags = ast_flags;
+
+ rc = obd_enqueue(sbi->ll_dt_exp, &oinfo, &einfo, NULL);
+ *policy = oinfo.oi_policy;
if (rc > 0)
rc = -EIO;
+ ll_inode_size_lock(inode, 1);
+ inode_init_lvb(inode, &lvb);
+ obd_merge_lvb(sbi->ll_dt_exp, lsm, &lvb, 1);
+
if (policy->l_extent.start == 0 &&
- policy->l_extent.end == OBD_OBJECT_EOF)
- inode->i_size = lov_merge_size(lsm, 1);
+ policy->l_extent.end == OBD_OBJECT_EOF) {
+ /* vmtruncate()->ll_truncate() first sets the i_size and then
+ * the kms under both a DLM lock and the
+ * ll_inode_size_lock(). If we don't get the
+ * ll_inode_size_lock() here we can match the DLM lock and
+ * reset i_size from the kms before the truncating path has
+ * updated the kms. generic_file_write can then trust the
+ * stale i_size when doing appending writes and effectively
+ * cancel the result of the truncate. Getting the
+ * ll_inode_size_lock() after the enqueue maintains the DLM
+ * -> ll_inode_size_lock() acquiring order. */
+ i_size_write(inode, lvb.lvb_size);
+ CDEBUG(D_INODE, "inode=%lu, updating i_size %llu\n",
+ inode->i_ino, i_size_read(inode));
+ }
- //inode->i_mtime = lov_merge_mtime(lsm, inode->i_mtime);
+ if (rc == 0) {
+ LTIME_S(inode->i_mtime) = lvb.lvb_mtime;
+ LTIME_S(inode->i_atime) = lvb.lvb_atime;
+ LTIME_S(inode->i_ctime) = lvb.lvb_ctime;
+ }
+ ll_inode_size_unlock(inode, 1);
RETURN(rc);
}
(sbi->ll_flags & LL_SBI_NOLCK))
RETURN(0);
- rc = obd_cancel(sbi->ll_osc_exp, lsm, mode, lockh);
+ rc = obd_cancel(sbi->ll_dt_exp, lsm, mode, lockh);
RETURN(rc);
}
-static ssize_t ll_file_read(struct file *filp, char *buf, size_t count,
+static ssize_t ll_file_read(struct file *file, char *buf, size_t count,
loff_t *ppos)
{
- struct ll_file_data *fd = filp->private_data;
- struct inode *inode = filp->f_dentry->d_inode;
+ struct inode *inode = file->f_dentry->d_inode;
struct ll_inode_info *lli = ll_i2info(inode);
struct lov_stripe_md *lsm = lli->lli_smd;
- struct lustre_handle lockh = { 0 };
- ldlm_policy_data_t policy;
- int rc;
- ssize_t retval;
+ struct ll_sb_info *sbi = ll_i2sbi(inode);
+ struct ll_lock_tree tree;
+ struct ll_lock_tree_node *node;
+ struct ost_lvb lvb;
+ struct ll_ra_read bead;
+ int rc, ra = 0;
+ loff_t end;
+ ssize_t retval, chunk, sum = 0;
+
__u64 kms;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),size="LPSZ",offset=%Ld\n",
inode->i_ino, inode->i_generation, inode, count, *ppos);
-
/* "If nbyte is 0, read() will return 0 and have no other results."
* -- Single Unix Spec */
if (count == 0)
RETURN(0);
- lprocfs_counter_add(ll_i2sbi(inode)->ll_stats, LPROC_LL_READ_BYTES,
- count);
-
- if (!lsm)
- RETURN(0);
+ ll_stats_ops_tally(sbi, LPROC_LL_READ_BYTES, count);
- policy.l_extent.start = *ppos;
- policy.l_extent.end = *ppos + count - 1;
+ if (!lsm) {
+ /* Read on file with no objects should return zero-filled
+ * buffers up to file size (we can get non-zero sizes with
+ * mknod + truncate, then opening file for read. This is a
+ * common pattern in NFS case, it seems). Bug 6243 */
+ int notzeroed;
+ /* Since there are no objects on OSTs, we have nothing to get
+ * lock on and so we are forced to access inode->i_size
+ * unguarded */
- rc = ll_extent_lock(fd, inode, lsm, LCK_PR, &policy, &lockh,
- (filp->f_flags & O_NONBLOCK) ?
- LDLM_FL_BLOCK_NOWAIT: 0);
- if (rc != 0)
- RETURN(rc);
+ /* Read beyond end of file */
+ if (*ppos >= i_size_read(inode))
+ RETURN(0);
- kms = lov_merge_size(lsm, 1);
+ if (count > i_size_read(inode) - *ppos)
+ count = i_size_read(inode) - *ppos;
+ /* Make sure to correctly adjust the file pos pointer for
+ * EFAULT case */
+ notzeroed = clear_user(buf, count);
+ count -= notzeroed;
+ *ppos += count;
+ if (!count)
+ RETURN(-EFAULT);
+ RETURN(count);
+ }
+
+repeat:
+ if (sbi->ll_max_rw_chunk != 0) {
+ /* first, let's know the end of the current stripe */
+ end = *ppos;
+ obd_extent_calc(sbi->ll_dt_exp, lsm, OBD_CALC_STRIPE_END,
+ (obd_off *)&end);
+
+ /* correct, the end is beyond the request */
+ if (end > *ppos + count - 1)
+ end = *ppos + count - 1;
+
+ /* and chunk shouldn't be too large even if striping is wide */
+ if (end - *ppos > sbi->ll_max_rw_chunk)
+ end = *ppos + sbi->ll_max_rw_chunk - 1;
+ } else {
+ end = *ppos + count - 1;
+ }
+
+ node = ll_node_from_inode(inode, *ppos, end, LCK_PR);
+ if (IS_ERR(node)){
+ GOTO(out, retval = PTR_ERR(node));
+ }
+
+ tree.lt_fd = LUSTRE_FPRIVATE(file);
+ rc = ll_tree_lock(&tree, node, buf, count,
+ file->f_flags & O_NONBLOCK ? LDLM_FL_BLOCK_NOWAIT :0);
+ if (rc != 0)
+ GOTO(out, retval = rc);
+
+ ll_inode_size_lock(inode, 1);
+ /*
+ * Consistency guarantees: following possibilities exist for the
+ * relation between region being read and real file size at this
+ * moment:
+ *
+ * (A): the region is completely inside of the file;
+ *
+ * (B-x): x bytes of region are inside of the file, the rest is
+ * outside;
+ *
+ * (C): the region is completely outside of the file.
+ *
+ * This classification is stable under DLM lock acquired by
+ * ll_tree_lock() above, because to change class, other client has to
+ * take DLM lock conflicting with our lock. Also, any updates to
+ * ->i_size by other threads on this client are serialized by
+ * ll_inode_size_lock(). This guarantees that short reads are handled
+ * correctly in the face of concurrent writes and truncates.
+ */
+ inode_init_lvb(inode, &lvb);
+ obd_merge_lvb(sbi->ll_dt_exp, lsm, &lvb, 1);
+ kms = lvb.lvb_size;
if (*ppos + count - 1 > kms) {
- /* A glimpse is necessary to determine whether we return a short
- * read or some zeroes at the end of the buffer */
- struct ost_lvb lvb;
- retval = ll_glimpse_size(inode, &lvb);
- if (retval)
+ /* A glimpse is necessary to determine whether we return a
+ * short read (B) or some zeroes at the end of the buffer (C) */
+ ll_inode_size_unlock(inode, 1);
+ retval = ll_glimpse_size(inode, LDLM_FL_BLOCK_GRANTED);
+ if (retval) {
+ ll_tree_unlock(&tree);
goto out;
- inode->i_size = lvb.lvb_size;
+ }
} else {
- inode->i_size = kms;
+ /* region is within kms and, hence, within real file size (A).
+ * We need to increase i_size to cover the read region so that
+ * generic_file_read() will do its job, but that doesn't mean
+ * the kms size is _correct_, it is only the _minimum_ size.
+ * If someone does a stat they will get the correct size which
+ * will always be >= the kms value here. b=11081 */
+ if (i_size_read(inode) < kms)
+ i_size_write(inode, kms);
+ ll_inode_size_unlock(inode, 1);
}
- CDEBUG(D_INFO, "Read ino %lu, "LPSZ" bytes, offset %lld, i_size %llu\n",
- inode->i_ino, count, *ppos, inode->i_size);
+ chunk = end - *ppos + 1;
+ CDEBUG(D_INODE, "Read ino %lu, "LPSZ" bytes, offset %lld, i_size %llu\n",
+ inode->i_ino, chunk, *ppos, i_size_read(inode));
/* turn off the kernel's read-ahead */
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- filp->f_ramax = 0;
-#else
- filp->f_ra.ra_pages = 0;
-#endif
- retval = generic_file_read(filp, buf, count, ppos);
+ file->f_ra.ra_pages = 0;
+
+ /* initialize read-ahead window once per syscall */
+ if (ra == 0) {
+ ra = 1;
+ bead.lrr_start = *ppos >> CFS_PAGE_SHIFT;
+ bead.lrr_count = (count + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
+ ll_ra_read_in(file, &bead);
+ }
+
+ /* BUG: 5972 */
+ file_accessed(file);
+ retval = generic_file_read(file, buf, chunk, ppos);
+ ll_rw_stats_tally(sbi, current->pid, file, count, 0);
+
+ ll_tree_unlock(&tree);
+
+ if (retval > 0) {
+ buf += retval;
+ count -= retval;
+ sum += retval;
+ if (retval == chunk && count > 0)
+ goto repeat;
+ }
out:
- ll_extent_unlock(fd, inode, lsm, LCK_PR, &lockh);
+ if (ra != 0)
+ ll_ra_read_ex(file, &bead);
+ retval = (sum > 0) ? sum : retval;
RETURN(retval);
}
static ssize_t ll_file_write(struct file *file, const char *buf, size_t count,
loff_t *ppos)
{
- struct ll_file_data *fd = file->private_data;
struct inode *inode = file->f_dentry->d_inode;
+ struct ll_sb_info *sbi = ll_i2sbi(inode);
struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
- struct lustre_handle lockh = { 0 };
- ldlm_policy_data_t policy;
+ struct ll_lock_tree tree;
+ struct ll_lock_tree_node *node;
loff_t maxbytes = ll_file_maxbytes(inode);
- ssize_t retval;
- int nonblock = 0, rc;
+ loff_t lock_start, lock_end, end;
+ ssize_t retval, chunk, sum = 0;
+ int rc;
ENTRY;
- if (file->f_flags & O_NONBLOCK)
- nonblock = LDLM_FL_BLOCK_NOWAIT;
+
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),size="LPSZ",offset=%Ld\n",
inode->i_ino, inode->i_generation, inode, count, *ppos);
/* If file was opened for LL_IOC_LOV_SETSTRIPE but the ioctl wasn't
* called on the file, don't fail the below assertion (bug 2388). */
- if (file->f_flags & O_LOV_DELAY_CREATE && lsm == NULL)
+ if (file->f_flags & O_LOV_DELAY_CREATE &&
+ ll_i2info(inode)->lli_smd == NULL)
RETURN(-EBADF);
- LASSERT(lsm);
+ LASSERT(ll_i2info(inode)->lli_smd != NULL);
+
+ down(&ll_i2info(inode)->lli_write_sem);
+
+repeat:
+ chunk = 0; /* just to fix gcc's warning */
+ end = *ppos + count - 1;
if (file->f_flags & O_APPEND) {
- policy.l_extent.start = 0;
- policy.l_extent.end = OBD_OBJECT_EOF;
- } else {
- policy.l_extent.start = *ppos;
- policy.l_extent.end = *ppos + count - 1;
+ lock_start = 0;
+ lock_end = OBD_OBJECT_EOF;
+ } else if (sbi->ll_max_rw_chunk != 0) {
+ /* first, let's know the end of the current stripe */
+ end = *ppos;
+ obd_extent_calc(sbi->ll_dt_exp, lsm, OBD_CALC_STRIPE_END,
+ (obd_off *)&end);
+
+ /* correct, the end is beyond the request */
+ if (end > *ppos + count - 1)
+ end = *ppos + count - 1;
+
+ /* and chunk shouldn't be too large even if striping is wide */
+ if (end - *ppos > sbi->ll_max_rw_chunk)
+ end = *ppos + sbi->ll_max_rw_chunk - 1;
+ lock_start = *ppos;
+ lock_end = end;
+ } else {
+ lock_start = *ppos;
+ lock_end = *ppos + count - 1;
}
+ node = ll_node_from_inode(inode, lock_start, lock_end, LCK_PW);
- rc = ll_extent_lock(fd, inode, lsm, LCK_PW, &policy, &lockh, nonblock);
+ if (IS_ERR(node))
+ GOTO(out, retval = PTR_ERR(node));
+
+ tree.lt_fd = LUSTRE_FPRIVATE(file);
+ rc = ll_tree_lock(&tree, node, buf, count,
+ file->f_flags & O_NONBLOCK ? LDLM_FL_BLOCK_NOWAIT :0);
if (rc != 0)
- RETURN(rc);
+ GOTO(out, retval = rc);
- /* this is ok, g_f_w will overwrite this under i_sem if it races
- * with a local truncate, it just makes our maxbyte checking easier */
- if (file->f_flags & O_APPEND)
- *ppos = inode->i_size;
+ /* This is ok, g_f_w will overwrite this under i_sem if it races
+ * with a local truncate, it just makes our maxbyte checking easier.
+ * The i_size value gets updated in ll_extent_lock() as a consequence
+ * of the [0,EOF] extent lock we requested above. */
+ if (file->f_flags & O_APPEND) {
+ *ppos = i_size_read(inode);
+ end = *ppos + count - 1;
+ }
if (*ppos >= maxbytes) {
- if (count || *ppos > maxbytes) {
- send_sig(SIGXFSZ, current, 0);
- GOTO(out, retval = -EFBIG);
- }
+ send_sig(SIGXFSZ, current, 0);
+ GOTO(out_unlock, retval = -EFBIG);
}
if (*ppos + count > maxbytes)
count = maxbytes - *ppos;
+ /* generic_file_write handles O_APPEND after getting i_mutex */
+ chunk = end - *ppos + 1;
CDEBUG(D_INFO, "Writing inode %lu, "LPSZ" bytes, offset %Lu\n",
- inode->i_ino, count, *ppos);
+ inode->i_ino, chunk, *ppos);
+ retval = generic_file_write(file, buf, chunk, ppos);
+ ll_rw_stats_tally(ll_i2sbi(inode), current->pid, file, count, 1);
- /* generic_file_write handles O_APPEND after getting i_sem */
- retval = generic_file_write(file, buf, count, ppos);
+out_unlock:
+ ll_tree_unlock(&tree);
out:
- ll_extent_unlock(fd, inode, lsm, LCK_PW, &lockh);
- lprocfs_counter_add(ll_i2sbi(inode)->ll_stats, LPROC_LL_WRITE_BYTES,
- retval > 0 ? retval : 0);
+ if (retval > 0) {
+ buf += retval;
+ count -= retval;
+ sum += retval;
+ if (retval == chunk && count > 0)
+ goto repeat;
+ }
+
+ up(&ll_i2info(inode)->lli_write_sem);
+
+ retval = (sum > 0) ? sum : retval;
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_WRITE_BYTES,
+ retval > 0 ? retval : 0);
+ RETURN(retval);
+}
+
+/*
+ * Send file content (through pagecache) somewhere with helper
+ */
+static ssize_t ll_file_sendfile(struct file *in_file, loff_t *ppos,size_t count,
+ read_actor_t actor, void *target)
+{
+ struct inode *inode = in_file->f_dentry->d_inode;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct lov_stripe_md *lsm = lli->lli_smd;
+ struct ll_lock_tree tree;
+ struct ll_lock_tree_node *node;
+ struct ost_lvb lvb;
+ struct ll_ra_read bead;
+ int rc;
+ ssize_t retval;
+ __u64 kms;
+ ENTRY;
+ CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),size="LPSZ",offset=%Ld\n",
+ inode->i_ino, inode->i_generation, inode, count, *ppos);
+
+ /* "If nbyte is 0, read() will return 0 and have no other results."
+ * -- Single Unix Spec */
+ if (count == 0)
+ RETURN(0);
+
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_READ_BYTES, count);
+ /* turn off the kernel's read-ahead */
+ in_file->f_ra.ra_pages = 0;
+
+ /* File with no objects, nothing to lock */
+ if (!lsm)
+ RETURN(generic_file_sendfile(in_file, ppos, count, actor, target));
+
+ node = ll_node_from_inode(inode, *ppos, *ppos + count - 1, LCK_PR);
+ if (IS_ERR(node))
+ RETURN(PTR_ERR(node));
+
+ tree.lt_fd = LUSTRE_FPRIVATE(in_file);
+ rc = ll_tree_lock(&tree, node, NULL, count,
+ in_file->f_flags & O_NONBLOCK?LDLM_FL_BLOCK_NOWAIT:0);
+ if (rc != 0)
+ RETURN(rc);
+
+ ll_inode_size_lock(inode, 1);
+ /*
+ * Consistency guarantees: following possibilities exist for the
+ * relation between region being read and real file size at this
+ * moment:
+ *
+ * (A): the region is completely inside of the file;
+ *
+ * (B-x): x bytes of region are inside of the file, the rest is
+ * outside;
+ *
+ * (C): the region is completely outside of the file.
+ *
+ * This classification is stable under DLM lock acquired by
+ * ll_tree_lock() above, because to change class, other client has to
+ * take DLM lock conflicting with our lock. Also, any updates to
+ * ->i_size by other threads on this client are serialized by
+ * ll_inode_size_lock(). This guarantees that short reads are handled
+ * correctly in the face of concurrent writes and truncates.
+ */
+ inode_init_lvb(inode, &lvb);
+ obd_merge_lvb(ll_i2sbi(inode)->ll_dt_exp, lsm, &lvb, 1);
+ kms = lvb.lvb_size;
+ if (*ppos + count - 1 > kms) {
+ /* A glimpse is necessary to determine whether we return a
+ * short read (B) or some zeroes at the end of the buffer (C) */
+ ll_inode_size_unlock(inode, 1);
+ retval = ll_glimpse_size(inode, LDLM_FL_BLOCK_GRANTED);
+ if (retval)
+ goto out;
+ } else {
+ /* region is within kms and, hence, within real file size (A) */
+ i_size_write(inode, kms);
+ ll_inode_size_unlock(inode, 1);
+ }
+
+ CDEBUG(D_INFO, "Send ino %lu, "LPSZ" bytes, offset %lld, i_size %llu\n",
+ inode->i_ino, count, *ppos, i_size_read(inode));
+
+ bead.lrr_start = *ppos >> CFS_PAGE_SHIFT;
+ bead.lrr_count = (count + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
+ ll_ra_read_in(in_file, &bead);
+ /* BUG: 5972 */
+ file_accessed(in_file);
+ retval = generic_file_sendfile(in_file, ppos, count, actor, target);
+ ll_ra_read_ex(in_file, &bead);
+
+ out:
+ ll_tree_unlock(&tree);
RETURN(retval);
}
unsigned long arg)
{
struct ll_inode_info *lli = ll_i2info(inode);
- struct obd_export *exp = ll_i2obdexp(inode);
+ struct obd_export *exp = ll_i2dtexp(inode);
struct ll_recreate_obj ucreatp;
struct obd_trans_info oti = { 0 };
struct obdo *oa = NULL;
if (!capable (CAP_SYS_ADMIN))
RETURN(-EPERM);
- rc = copy_from_user(&ucreatp, (struct ll_recreate_obj *)arg,
+ rc = copy_from_user(&ucreatp, (struct ll_recreate_obj *)arg,
sizeof(struct ll_recreate_obj));
if (rc) {
RETURN(-EFAULT);
}
- oa = obdo_alloc();
- if (oa == NULL) {
+ OBDO_ALLOC(oa);
+ if (oa == NULL)
RETURN(-ENOMEM);
- }
- down(&lli->lli_open_sem);
+ down(&lli->lli_size_sem);
lsm = lli->lli_smd;
- if (lsm == NULL) {
- up(&lli->lli_open_sem);
- obdo_free(oa);
- RETURN (-ENOENT);
- }
+ if (lsm == NULL)
+ GOTO(out, rc = -ENOENT);
lsm_size = sizeof(*lsm) + (sizeof(struct lov_oinfo) *
(lsm->lsm_stripe_count));
OBD_ALLOC(lsm2, lsm_size);
- if (lsm2 == NULL) {
- up(&lli->lli_open_sem);
- obdo_free(oa);
- RETURN(-ENOMEM);
- }
+ if (lsm2 == NULL)
+ GOTO(out, rc = -ENOMEM);
- oa->o_id = ucreatp.lrc_id;
+ oa->o_id = ucreatp.lrc_id;
+ oa->o_gr = ucreatp.lrc_group;
oa->o_nlink = ucreatp.lrc_ost_idx;
- oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS;
oa->o_flags |= OBD_FL_RECREATE_OBJS;
+ oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
- OBD_MD_FLMTIME | OBD_MD_FLCTIME);
+ OBD_MD_FLMTIME | OBD_MD_FLCTIME);
oti.oti_objid = NULL;
memcpy(lsm2, lsm, lsm_size);
rc = obd_create(exp, oa, &lsm2, &oti);
- up(&lli->lli_open_sem);
OBD_FREE(lsm2, lsm_size);
- obdo_free(oa);
- RETURN (rc);
+ GOTO(out, rc);
+out:
+ up(&lli->lli_size_sem);
+ OBDO_FREE(oa);
+ return rc;
}
-static int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
- int flags, struct lov_user_md *lum,
- int lum_size)
+int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
+ int flags, struct lov_user_md *lum, int lum_size)
{
struct ll_inode_info *lli = ll_i2info(inode);
- struct file *f;
- struct obd_export *exp = ll_i2obdexp(inode);
struct lov_stripe_md *lsm;
struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
- struct ptlrpc_request *req = NULL;
int rc = 0;
- struct lustre_md md;
ENTRY;
- down(&lli->lli_open_sem);
+ down(&lli->lli_size_sem);
lsm = lli->lli_smd;
if (lsm) {
- up(&lli->lli_open_sem);
+ up(&lli->lli_size_sem);
CDEBUG(D_IOCTL, "stripe already exists for ino %lu\n",
inode->i_ino);
RETURN(-EEXIST);
}
- f = get_empty_filp();
- if (!f)
- GOTO(out, -ENOMEM);
-
- f->f_dentry = file->f_dentry;
- f->f_vfsmnt = file->f_vfsmnt;
-
- rc = ll_intent_file_open(f, lum, lum_size, &oit);
+ rc = ll_intent_file_open(file, lum, lum_size, &oit);
if (rc)
GOTO(out, rc);
if (it_disposition(&oit, DISP_LOOKUP_NEG))
- GOTO(out, -ENOENT);
- req = oit.d.lustre.it_data;
+ GOTO(out_req_free, rc = -ENOENT);
rc = oit.d.lustre.it_status;
-
if (rc < 0)
- GOTO(out, rc);
+ GOTO(out_req_free, rc);
- rc = mdc_req2lustre_md(req, 1, exp, &md);
- if (rc)
- GOTO(out, rc);
- ll_update_inode(f->f_dentry->d_inode, md.body, md.lsm);
+ ll_release_openhandle(file->f_dentry, &oit);
- rc = ll_local_open(f, &oit);
+ out:
+ up(&lli->lli_size_sem);
+ ll_intent_release(&oit);
+ RETURN(rc);
+out_req_free:
+ ptlrpc_req_finished((struct ptlrpc_request *) oit.d.lustre.it_data);
+ goto out;
+}
+
+int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
+ struct lov_mds_md **lmmp, int *lmm_size,
+ struct ptlrpc_request **request)
+{
+ struct ll_sb_info *sbi = ll_i2sbi(inode);
+ struct mdt_body *body;
+ struct lov_mds_md *lmm = NULL;
+ struct ptlrpc_request *req = NULL;
+ struct obd_capa *oc;
+ int rc, lmmsize;
+
+ rc = ll_get_max_mdsize(sbi, &lmmsize);
if (rc)
+ RETURN(rc);
+
+ oc = ll_mdscapa_get(inode);
+ rc = md_getattr_name(sbi->ll_md_exp, ll_inode2fid(inode),
+ oc, filename, strlen(filename) + 1,
+ OBD_MD_FLEASIZE | OBD_MD_FLDIREA, lmmsize, &req);
+ capa_put(oc);
+ if (rc < 0) {
+ CDEBUG(D_INFO, "md_getattr_name failed "
+ "on %s: rc %d\n", filename, rc);
GOTO(out, rc);
- ll_intent_release(&oit);
+ }
- rc = ll_file_release(f->f_dentry->d_inode, f);
+ body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
+ LASSERT(body != NULL); /* checked by mdc_getattr_name */
+ /* swabbed by mdc_getattr_name */
+ LASSERT(lustre_rep_swabbed(req, REPLY_REC_OFF));
- out:
- if (f)
- put_filp(f);
- up(&lli->lli_open_sem);
- if (req != NULL)
- ptlrpc_req_finished(req);
- RETURN(rc);
+ lmmsize = body->eadatasize;
+
+ if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
+ lmmsize == 0) {
+ GOTO(out, rc = -ENODATA);
+ }
+
+ lmm = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF + 1, lmmsize);
+ LASSERT(lmm != NULL);
+ LASSERT(lustre_rep_swabbed(req, REPLY_REC_OFF + 1));
+
+ /*
+ * This is coming from the MDS, so is probably in
+ * little endian. We convert it to host endian before
+ * passing it to userspace.
+ */
+ if (lmm->lmm_magic == __swab32(LOV_MAGIC)) {
+ lustre_swab_lov_user_md((struct lov_user_md *)lmm);
+ lustre_swab_lov_user_md_objects((struct lov_user_md *)lmm);
+ } else if (lmm->lmm_magic == __swab32(LOV_MAGIC_JOIN)) {
+ lustre_swab_lov_user_md_join((struct lov_user_md_join *)lmm);
+ }
+
+ if (lmm->lmm_magic == LOV_MAGIC_JOIN) {
+ struct lov_stripe_md *lsm;
+ struct lov_user_md_join *lmj;
+ int lmj_size, i, aindex = 0;
+
+ rc = obd_unpackmd(sbi->ll_dt_exp, &lsm, lmm, lmmsize);
+ if (rc < 0)
+ GOTO(out, rc = -ENOMEM);
+ rc = obd_checkmd(sbi->ll_dt_exp, sbi->ll_md_exp, lsm);
+ if (rc)
+ GOTO(out_free_memmd, rc);
+
+ lmj_size = sizeof(struct lov_user_md_join) +
+ lsm->lsm_stripe_count *
+ sizeof(struct lov_user_ost_data_join);
+ OBD_ALLOC(lmj, lmj_size);
+ if (!lmj)
+ GOTO(out_free_memmd, rc = -ENOMEM);
+
+ memcpy(lmj, lmm, sizeof(struct lov_user_md_join));
+ for (i = 0; i < lsm->lsm_stripe_count; i++) {
+ struct lov_extent *lex =
+ &lsm->lsm_array->lai_ext_array[aindex];
+
+ if (lex->le_loi_idx + lex->le_stripe_count <= i)
+ aindex ++;
+ CDEBUG(D_INFO, "aindex %d i %d l_extent_start "
+ LPU64" len %d\n", aindex, i,
+ lex->le_start, (int)lex->le_len);
+ lmj->lmm_objects[i].l_extent_start =
+ lex->le_start;
+
+ if ((int)lex->le_len == -1)
+ lmj->lmm_objects[i].l_extent_end = -1;
+ else
+ lmj->lmm_objects[i].l_extent_end =
+ lex->le_start + lex->le_len;
+ lmj->lmm_objects[i].l_object_id =
+ lsm->lsm_oinfo[i]->loi_id;
+ lmj->lmm_objects[i].l_object_gr =
+ lsm->lsm_oinfo[i]->loi_gr;
+ lmj->lmm_objects[i].l_ost_gen =
+ lsm->lsm_oinfo[i]->loi_ost_gen;
+ lmj->lmm_objects[i].l_ost_idx =
+ lsm->lsm_oinfo[i]->loi_ost_idx;
+ }
+ lmm = (struct lov_mds_md *)lmj;
+ lmmsize = lmj_size;
+out_free_memmd:
+ obd_free_memmd(sbi->ll_dt_exp, &lsm);
+ }
+out:
+ *lmmp = lmm;
+ *lmm_size = lmmsize;
+ *request = req;
+ return rc;
}
static int ll_lov_setea(struct inode *inode, struct file *file,
RETURN(-EFAULT);
rc = ll_lov_setstripe_ea_info(inode, file, flags, &lum, sizeof(lum));
+ if (rc == 0) {
+ put_user(0, &lump->lmm_stripe_count);
+ rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode),
+ 0, ll_i2info(inode)->lli_smd, lump);
+ }
RETURN(rc);
}
if (!lsm)
RETURN(-ENODATA);
- return obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2obdexp(inode), 0, lsm,
+ return obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode), 0, lsm,
(void *)arg);
}
static int ll_get_grouplock(struct inode *inode, struct file *file,
- unsigned long arg)
+ unsigned long arg)
{
- struct ll_file_data *fd = file->private_data;
+ struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
ldlm_policy_data_t policy = { .l_extent = { .start = 0,
.end = OBD_OBJECT_EOF}};
struct lustre_handle lockh = { 0 };
flags = LDLM_FL_BLOCK_NOWAIT;
rc = ll_extent_lock(fd, inode, lsm, LCK_GROUP, &policy, &lockh, flags);
- if (rc != 0)
+ if (rc)
RETURN(rc);
fd->fd_flags |= LL_FILE_GROUP_LOCKED|LL_FILE_IGNORE_LOCK;
}
static int ll_put_grouplock(struct inode *inode, struct file *file,
- unsigned long arg)
+ unsigned long arg)
{
- struct ll_file_data *fd = file->private_data;
+ struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
struct ll_inode_info *lli = ll_i2info(inode);
struct lov_stripe_md *lsm = lli->lli_smd;
int rc;
RETURN(0);
}
+static int join_sanity_check(struct inode *head, struct inode *tail)
+{
+ ENTRY;
+ if ((ll_i2sbi(head)->ll_flags & LL_SBI_JOIN) == 0) {
+ CERROR("server do not support join \n");
+ RETURN(-EINVAL);
+ }
+ if (!S_ISREG(tail->i_mode) || !S_ISREG(head->i_mode)) {
+ CERROR("tail ino %lu and ino head %lu must be regular\n",
+ head->i_ino, tail->i_ino);
+ RETURN(-EINVAL);
+ }
+ if (head->i_ino == tail->i_ino) {
+ CERROR("file %lu can not be joined to itself \n", head->i_ino);
+ RETURN(-EINVAL);
+ }
+ if (i_size_read(head) % JOIN_FILE_ALIGN) {
+ CERROR("hsize %llu must be times of 64K\n", i_size_read(head));
+ RETURN(-EINVAL);
+ }
+ RETURN(0);
+}
+
+static int join_file(struct inode *head_inode, struct file *head_filp,
+ struct file *tail_filp)
+{
+ struct dentry *tail_dentry = tail_filp->f_dentry;
+ struct lookup_intent oit = {.it_op = IT_OPEN,
+ .it_flags = head_filp->f_flags|O_JOIN_FILE};
+ struct ldlm_enqueue_info einfo = { LDLM_IBITS, LCK_CW,
+ ll_md_blocking_ast, ldlm_completion_ast, NULL, NULL };
+
+ struct lustre_handle lockh;
+ struct md_op_data *op_data;
+ int rc;
+ loff_t data;
+ ENTRY;
+
+ tail_dentry = tail_filp->f_dentry;
+
+ data = i_size_read(head_inode);
+ op_data = ll_prep_md_op_data(NULL, head_inode,
+ tail_dentry->d_parent->d_inode,
+ tail_dentry->d_name.name,
+ tail_dentry->d_name.len, 0,
+ LUSTRE_OPC_ANY, &data);
+ if (IS_ERR(op_data))
+ RETURN(PTR_ERR(op_data));
+
+ rc = md_enqueue(ll_i2mdexp(head_inode), &einfo, &oit,
+ op_data, &lockh, NULL, 0, 0);
+
+ ll_finish_md_op_data(op_data);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ rc = oit.d.lustre.it_status;
+
+ if (rc < 0 || it_open_error(DISP_OPEN_OPEN, &oit)) {
+ rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, &oit);
+ ptlrpc_req_finished((struct ptlrpc_request *)
+ oit.d.lustre.it_data);
+ GOTO(out, rc);
+ }
+
+ if (oit.d.lustre.it_lock_mode) { /* If we got lock - release it right
+ * away */
+ ldlm_lock_decref(&lockh, oit.d.lustre.it_lock_mode);
+ oit.d.lustre.it_lock_mode = 0;
+ }
+ ll_release_openhandle(head_filp->f_dentry, &oit);
+out:
+ ll_intent_release(&oit);
+ RETURN(rc);
+}
+
+static int ll_file_join(struct inode *head, struct file *filp,
+ char *filename_tail)
+{
+ struct inode *tail = NULL, *first = NULL, *second = NULL;
+ struct dentry *tail_dentry;
+ struct file *tail_filp, *first_filp, *second_filp;
+ struct ll_lock_tree first_tree, second_tree;
+ struct ll_lock_tree_node *first_node, *second_node;
+ struct ll_inode_info *hlli = ll_i2info(head), *tlli;
+ int rc = 0, cleanup_phase = 0;
+ ENTRY;
+
+ CDEBUG(D_VFSTRACE, "VFS Op:head=%lu/%u(%p) tail %s\n",
+ head->i_ino, head->i_generation, head, filename_tail);
+
+ tail_filp = filp_open(filename_tail, O_WRONLY, 0644);
+ if (IS_ERR(tail_filp)) {
+ CERROR("Can not open tail file %s", filename_tail);
+ rc = PTR_ERR(tail_filp);
+ GOTO(cleanup, rc);
+ }
+ tail = igrab(tail_filp->f_dentry->d_inode);
+
+ tlli = ll_i2info(tail);
+ tail_dentry = tail_filp->f_dentry;
+ LASSERT(tail_dentry);
+ cleanup_phase = 1;
+
+ /*reorder the inode for lock sequence*/
+ first = head->i_ino > tail->i_ino ? head : tail;
+ second = head->i_ino > tail->i_ino ? tail : head;
+ first_filp = head->i_ino > tail->i_ino ? filp : tail_filp;
+ second_filp = head->i_ino > tail->i_ino ? tail_filp : filp;
+
+ CDEBUG(D_INFO, "reorder object from %lu:%lu to %lu:%lu \n",
+ head->i_ino, tail->i_ino, first->i_ino, second->i_ino);
+ first_node = ll_node_from_inode(first, 0, OBD_OBJECT_EOF, LCK_EX);
+ if (IS_ERR(first_node)){
+ rc = PTR_ERR(first_node);
+ GOTO(cleanup, rc);
+ }
+ first_tree.lt_fd = first_filp->private_data;
+ rc = ll_tree_lock(&first_tree, first_node, NULL, 0, 0);
+ if (rc != 0)
+ GOTO(cleanup, rc);
+ cleanup_phase = 2;
+
+ second_node = ll_node_from_inode(second, 0, OBD_OBJECT_EOF, LCK_EX);
+ if (IS_ERR(second_node)){
+ rc = PTR_ERR(second_node);
+ GOTO(cleanup, rc);
+ }
+ second_tree.lt_fd = second_filp->private_data;
+ rc = ll_tree_lock(&second_tree, second_node, NULL, 0, 0);
+ if (rc != 0)
+ GOTO(cleanup, rc);
+ cleanup_phase = 3;
+
+ rc = join_sanity_check(head, tail);
+ if (rc)
+ GOTO(cleanup, rc);
+
+ rc = join_file(head, filp, tail_filp);
+ if (rc)
+ GOTO(cleanup, rc);
+cleanup:
+ switch (cleanup_phase) {
+ case 3:
+ ll_tree_unlock(&second_tree);
+ obd_cancel_unused(ll_i2dtexp(second),
+ ll_i2info(second)->lli_smd, 0, NULL);
+ case 2:
+ ll_tree_unlock(&first_tree);
+ obd_cancel_unused(ll_i2dtexp(first),
+ ll_i2info(first)->lli_smd, 0, NULL);
+ case 1:
+ filp_close(tail_filp, 0);
+ if (tail)
+ iput(tail);
+ if (head && rc == 0) {
+ obd_free_memmd(ll_i2sbi(head)->ll_dt_exp,
+ &hlli->lli_smd);
+ hlli->lli_smd = NULL;
+ }
+ case 0:
+ break;
+ default:
+ CERROR("invalid cleanup_phase %d\n", cleanup_phase);
+ LBUG();
+ }
+ RETURN(rc);
+}
+
+int ll_release_openhandle(struct dentry *dentry, struct lookup_intent *it)
+{
+ struct inode *inode = dentry->d_inode;
+ struct obd_client_handle *och;
+ int rc;
+ ENTRY;
+
+ LASSERT(inode);
+
+ /* Root ? Do nothing. */
+ if (dentry->d_inode->i_sb->s_root == dentry)
+ RETURN(0);
+
+ /* No open handle to close? Move away */
+ if (!it_disposition(it, DISP_OPEN_OPEN))
+ RETURN(0);
+
+ LASSERT(it_open_error(DISP_OPEN_OPEN, it) == 0);
+
+ OBD_ALLOC(och, sizeof(*och));
+ if (!och)
+ GOTO(out, rc = -ENOMEM);
+
+ ll_och_fill(ll_i2sbi(inode)->ll_md_exp,
+ ll_i2info(inode), it, och);
+
+ rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
+ inode, och);
+ out:
+ /* this one is in place of ll_file_open */
+ ptlrpc_req_finished(it->d.lustre.it_data);
+ it_clear_disposition(it, DISP_ENQ_OPEN_REF);
+ RETURN(rc);
+}
+
int ll_file_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
- struct ll_file_data *fd = file->private_data;
+ struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
int flags;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),cmd=%x\n", inode->i_ino,
inode->i_generation, inode, cmd);
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
- if (_IOC_TYPE(cmd) == 'T') /* tty ioctls */
+ /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
+ if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
RETURN(-ENOTTY);
- lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_IOCTL);
switch(cmd) {
case LL_IOC_GETFLAGS:
/* Get the current value of the file flags */
if (get_user(flags, (int *) arg))
RETURN(-EFAULT);
- if (cmd == LL_IOC_SETFLAGS)
+ if (cmd == LL_IOC_SETFLAGS) {
+ if ((flags & LL_FILE_IGNORE_LOCK) &&
+ !(file->f_flags & O_DIRECT)) {
+ CERROR("%s: unable to disable locking on "
+ "non-O_DIRECT file\n", current->comm);
+ RETURN(-EINVAL);
+ }
+
fd->fd_flags |= flags;
- else
+ } else {
fd->fd_flags &= ~flags;
+ }
RETURN(0);
case LL_IOC_LOV_SETSTRIPE:
RETURN(ll_lov_setstripe(inode, file, arg));
RETURN(ll_lov_recreate_obj(inode, file, arg));
case EXT3_IOC_GETFLAGS:
case EXT3_IOC_SETFLAGS:
- RETURN( ll_iocontrol(inode, file, cmd, arg) );
+ RETURN(ll_iocontrol(inode, file, cmd, arg));
+ case EXT3_IOC_GETVERSION_OLD:
+ case EXT3_IOC_GETVERSION:
+ RETURN(put_user(inode->i_generation, (int *)arg));
+ case LL_IOC_JOIN: {
+ char *ftail;
+ int rc;
+
+ ftail = getname((const char *)arg);
+ if (IS_ERR(ftail))
+ RETURN(PTR_ERR(ftail));
+ rc = ll_file_join(inode, file, ftail);
+ putname(ftail);
+ RETURN(rc);
+ }
case LL_IOC_GROUP_LOCK:
RETURN(ll_get_grouplock(inode, file, arg));
case LL_IOC_GROUP_UNLOCK:
RETURN(ll_put_grouplock(inode, file, arg));
+ case IOC_OBD_STATFS:
+ RETURN(ll_obd_statfs(inode, (void *)arg));
+
/* We need to special case any other ioctls we want to handle,
* to send them to the MDS/OST as appropriate and to properly
* network encode the arg field.
- case EXT2_IOC_GETVERSION_OLD:
- case EXT2_IOC_GETVERSION_NEW:
- case EXT2_IOC_SETVERSION_OLD:
- case EXT2_IOC_SETVERSION_NEW:
+ case EXT3_IOC_SETVERSION_OLD:
+ case EXT3_IOC_SETVERSION:
*/
- default:
- RETURN( obd_iocontrol(cmd, ll_i2obdexp(inode), 0, NULL,
- (void *)arg) );
+ case LL_IOC_FLUSHCTX:
+ RETURN(ll_flush_ctx(inode));
+ case LL_IOC_GETFACL: {
+ struct rmtacl_ioctl_data ioc;
+
+ if (copy_from_user(&ioc, (void *)arg, sizeof(ioc)))
+ RETURN(-EFAULT);
+
+ RETURN(ll_ioctl_getfacl(inode, &ioc));
+ }
+ case LL_IOC_SETFACL: {
+ struct rmtacl_ioctl_data ioc;
+
+ if (copy_from_user(&ioc, (void *)arg, sizeof(ioc)))
+ RETURN(-EFAULT);
+
+ RETURN(ll_ioctl_setfacl(inode, &ioc));
+ }
+ default: {
+ int err;
+
+ if (LLIOC_STOP ==
+ ll_iocontrol_call(inode, file, cmd, arg, &err))
+ RETURN(err);
+
+ RETURN(obd_iocontrol(cmd, ll_i2dtexp(inode), 0, NULL,
+ (void *)arg));
+ }
}
}
loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
{
struct inode *inode = file->f_dentry->d_inode;
- struct ll_file_data *fd = file->private_data;
- struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
- struct lustre_handle lockh = {0};
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct lov_stripe_md *lsm = lli->lli_smd;
loff_t retval;
ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),to=%llu\n", inode->i_ino,
- inode->i_generation, inode,
- offset + ((origin==2) ? inode->i_size : file->f_pos));
+ retval = offset + ((origin == 2) ? i_size_read(inode) :
+ (origin == 1) ? file->f_pos : 0);
+ CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), to=%Lu=%#Lx(%s)\n",
+ inode->i_ino, inode->i_generation, inode, retval, retval,
+ origin == 2 ? "SEEK_END": origin == 1 ? "SEEK_CUR" : "SEEK_SET");
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LLSEEK, 1);
- lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_LLSEEK);
if (origin == 2) { /* SEEK_END */
int nonblock = 0, rc;
- ldlm_policy_data_t policy = { .l_extent = {0, OBD_OBJECT_EOF }};
if (file->f_flags & O_NONBLOCK)
nonblock = LDLM_FL_BLOCK_NOWAIT;
- rc = ll_extent_lock(fd, inode, lsm, LCK_PR, &policy, &lockh,
- nonblock);
- if (rc != 0)
- RETURN(rc);
+ if (lsm != NULL) {
+ rc = ll_glimpse_size(inode, nonblock);
+ if (rc != 0)
+ RETURN(rc);
+ }
- offset += inode->i_size;
+ ll_inode_size_lock(inode, 0);
+ offset += i_size_read(inode);
+ ll_inode_size_unlock(inode, 0);
} else if (origin == 1) { /* SEEK_CUR */
offset += file->f_pos;
}
}
retval = offset;
}
-
- if (origin == 2)
- ll_extent_unlock(fd, inode, lsm, LCK_PR, &lockh);
+
RETURN(retval);
}
int ll_fsync(struct file *file, struct dentry *dentry, int data)
{
struct inode *inode = dentry->d_inode;
- struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
- struct ll_fid fid;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct lov_stripe_md *lsm = lli->lli_smd;
struct ptlrpc_request *req;
+ struct obd_capa *oc;
int rc, err;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
inode->i_generation, inode);
-
- lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_FSYNC);
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FSYNC, 1);
/* fsync's caller has already called _fdata{sync,write}, we want
* that IO to finish before calling the osc and mdc sync methods */
rc = filemap_fdatawait(inode->i_mapping);
- ll_inode2fid(&fid, inode);
- err = mdc_sync(ll_i2sbi(inode)->ll_mdc_exp, &fid, &req);
+ /* catch async errors that were recorded back when async writeback
+ * failed for pages in this mapping. */
+ err = lli->lli_async_rc;
+ lli->lli_async_rc = 0;
+ if (rc == 0)
+ rc = err;
+ if (lsm) {
+ err = lov_test_and_clear_async_rc(lsm);
+ if (rc == 0)
+ rc = err;
+ }
+
+ oc = ll_mdscapa_get(inode);
+ err = md_sync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
+ &req);
+ capa_put(oc);
if (!rc)
rc = err;
if (!err)
ptlrpc_req_finished(req);
if (data && lsm) {
- struct obdo *oa = obdo_alloc();
-
+ struct obdo *oa;
+
+ OBDO_ALLOC(oa);
if (!oa)
RETURN(rc ? rc : -ENOMEM);
oa->o_id = lsm->lsm_object_id;
- oa->o_valid = OBD_MD_FLID;
+ oa->o_gr = lsm->lsm_object_gr;
+ oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
- OBD_MD_FLMTIME | OBD_MD_FLCTIME);
+ OBD_MD_FLMTIME | OBD_MD_FLCTIME |
+ OBD_MD_FLGROUP);
- err = obd_sync(ll_i2sbi(inode)->ll_osc_exp, oa, lsm,
- 0, OBD_OBJECT_EOF);
+ oc = ll_osscapa_get(inode, CAPA_OPC_OSS_WRITE);
+ err = obd_sync(ll_i2sbi(inode)->ll_dt_exp, oa, lsm,
+ 0, OBD_OBJECT_EOF, oc);
+ capa_put(oc);
if (!rc)
rc = err;
- obdo_free(oa);
+ OBDO_FREE(oa);
}
RETURN(rc);
{
struct inode *inode = file->f_dentry->d_inode;
struct ll_sb_info *sbi = ll_i2sbi(inode);
- struct obd_device *obddev;
struct ldlm_res_id res_id =
- { .name = {inode->i_ino, inode->i_generation, LDLM_FLOCK} };
+ { .name = { fid_seq(ll_inode2fid(inode)),
+ fid_oid(ll_inode2fid(inode)),
+ fid_ver(ll_inode2fid(inode)),
+ LDLM_FLOCK} };
+ struct ldlm_enqueue_info einfo = { LDLM_FLOCK, 0, NULL,
+ ldlm_flock_completion_ast, NULL, file_lock };
struct lustre_handle lockh = {0};
ldlm_policy_data_t flock;
- ldlm_mode_t mode = 0;
int flags = 0;
int rc;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu file_lock=%p\n",
inode->i_ino, file_lock);
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FLOCK, 1);
+
+ if (file_lock->fl_flags & FL_FLOCK) {
+ LASSERT((cmd == F_SETLKW) || (cmd == F_SETLK));
+ /* set missing params for flock() calls */
+ file_lock->fl_end = OFFSET_MAX;
+ file_lock->fl_pid = current->tgid;
+ }
flock.l_flock.pid = file_lock->fl_pid;
flock.l_flock.start = file_lock->fl_start;
flock.l_flock.end = file_lock->fl_end;
switch (file_lock->fl_type) {
case F_RDLCK:
- mode = LCK_PR;
+ einfo.ei_mode = LCK_PR;
break;
case F_UNLCK:
/* An unlock request may or may not have any relation to
* information that is given with a normal read or write record
* lock request. To avoid creating another ldlm unlock (cancel)
* message we'll treat a LCK_NL flock request as an unlock. */
- mode = LCK_NL;
+ einfo.ei_mode = LCK_NL;
break;
case F_WRLCK:
- mode = LCK_PW;
+ einfo.ei_mode = LCK_PW;
break;
default:
CERROR("unknown fcntl lock type: %d\n", file_lock->fl_type);
switch (cmd) {
case F_SETLKW:
+#ifdef F_SETLKW64
+ case F_SETLKW64:
+#endif
flags = 0;
break;
case F_SETLK:
+#ifdef F_SETLK64
+ case F_SETLK64:
+#endif
flags = LDLM_FL_BLOCK_NOWAIT;
break;
case F_GETLK:
+#ifdef F_GETLK64
+ case F_GETLK64:
+#endif
flags = LDLM_FL_TEST_LOCK;
/* Save the old mode so that if the mode in the lock changes we
* can decrement the appropriate reader or writer refcount. */
- file_lock->fl_type = mode;
+ file_lock->fl_type = einfo.ei_mode;
break;
default:
CERROR("unknown fcntl lock command: %d\n", cmd);
LBUG();
}
- CDEBUG(D_DLMTRACE, "inode=%lu, pid="LPU64", flags=%#x, mode=%u, "
+ CDEBUG(D_DLMTRACE, "inode=%lu, pid=%u, flags=%#x, mode=%u, "
"start="LPU64", end="LPU64"\n", inode->i_ino, flock.l_flock.pid,
- flags, mode, flock.l_flock.start, flock.l_flock.end);
+ flags, einfo.ei_mode, flock.l_flock.start, flock.l_flock.end);
+
+ rc = ldlm_cli_enqueue(sbi->ll_md_exp, NULL, &einfo, &res_id,
+ &flock, &flags, NULL, 0, NULL, &lockh, 0);
+ if ((file_lock->fl_flags & FL_FLOCK) && (rc == 0))
+ ll_flock_lock_file_wait(file, file_lock, (cmd == F_SETLKW));
+#ifdef HAVE_F_OP_FLOCK
+ if ((file_lock->fl_flags & FL_POSIX) && (rc == 0) &&
+ !(flags & LDLM_FL_TEST_LOCK))
+ posix_lock_file_wait(file, file_lock);
+#endif
- obddev = sbi->ll_mdc_exp->exp_obd;
- rc = ldlm_cli_enqueue(sbi->ll_mdc_exp, NULL, obddev->obd_namespace,
- res_id, LDLM_FLOCK, &flock, mode, &flags,
- NULL, ldlm_flock_completion_ast, NULL, file_lock,
- NULL, 0, NULL, &lockh);
RETURN(rc);
}
-static int ll_have_md_lock(struct dentry *de, __u64 lockpart)
+int ll_file_noflock(struct file *file, int cmd, struct file_lock *file_lock)
+{
+ ENTRY;
+
+ RETURN(-ENOSYS);
+}
+
+int ll_have_md_lock(struct inode *inode, __u64 bits)
{
- struct ll_sb_info *sbi = ll_s2sbi(de->d_sb);
struct lustre_handle lockh;
- struct ldlm_res_id res_id = { .name = {0} };
- struct obd_device *obddev;
+ ldlm_policy_data_t policy = { .l_inodebits = {bits}};
+ struct lu_fid *fid;
int flags;
- ldlm_policy_data_t policy = { .l_inodebits = { lockpart } };
ENTRY;
- if (!de->d_inode)
+ if (!inode)
RETURN(0);
- obddev = sbi->ll_mdc_exp->exp_obd;
- res_id.name[0] = de->d_inode->i_ino;
- res_id.name[1] = de->d_inode->i_generation;
+ fid = &ll_i2info(inode)->lli_fid;
+ CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
+
+ flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
+ if (md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
+ LCK_CR|LCK_CW|LCK_PR|LCK_PW, &lockh)) {
+ RETURN(1);
+ }
+ RETURN(0);
+}
+
+ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
+ struct lustre_handle *lockh)
+{
+ ldlm_policy_data_t policy = { .l_inodebits = {bits}};
+ struct lu_fid *fid;
+ ldlm_mode_t rc;
+ int flags;
+ ENTRY;
- CDEBUG(D_INFO, "trying to match res "LPU64"\n", res_id.name[0]);
+ fid = &ll_i2info(inode)->lli_fid;
+ CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
- /* FIXME use LDLM_FL_TEST_LOCK instead */
flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING;
- if (ldlm_lock_match(obddev->obd_namespace, flags, &res_id, LDLM_IBITS,
- &policy, LCK_PR, &lockh)) {
- ldlm_lock_decref(&lockh, LCK_PR);
- RETURN(1);
+ rc = md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
+ LCK_CR|LCK_CW|LCK_PR|LCK_PW, lockh);
+ RETURN(rc);
+}
+
+static int ll_inode_revalidate_fini(struct inode *inode, int rc) {
+ if (rc == -ENOENT) { /* Already unlinked. Just update nlink
+ * and return success */
+ inode->i_nlink = 0;
+ /* This path cannot be hit for regular files unless in
+ * case of obscure races, so no need to to validate
+ * size. */
+ if (!S_ISREG(inode->i_mode) &&
+ !S_ISDIR(inode->i_mode))
+ return 0;
}
- if (ldlm_lock_match(obddev->obd_namespace, flags, &res_id, LDLM_IBITS,
- &policy, LCK_PW, &lockh)) {
- ldlm_lock_decref(&lockh, LCK_PW);
- RETURN(1);
+ if (rc) {
+ CERROR("failure %d inode %lu\n", rc, inode->i_ino);
+ return -abs(rc);
+
}
- RETURN(0);
+
+ return 0;
}
int ll_inode_revalidate_it(struct dentry *dentry, struct lookup_intent *it)
{
struct inode *inode = dentry->d_inode;
- struct ll_inode_info *lli;
- struct lov_stripe_md *lsm;
+ struct ptlrpc_request *req = NULL;
+ struct ll_sb_info *sbi;
+ struct obd_export *exp;
int rc;
ENTRY;
CERROR("REPORT THIS LINE TO PETER\n");
RETURN(0);
}
- lli = ll_i2info(inode);
+ sbi = ll_i2sbi(inode);
+
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),name=%s\n",
inode->i_ino, inode->i_generation, inode, dentry->d_name.name);
-#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,0))
- lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_REVALIDATE);
-#endif
- if (!ll_have_md_lock(dentry, MDS_INODELOCK_UPDATE)) {
- struct ptlrpc_request *req = NULL;
+ exp = ll_i2mdexp(inode);
+
+ if (exp->exp_connect_flags & OBD_CONNECT_ATTRFID) {
+ struct lookup_intent oit = { .it_op = IT_GETATTR };
+ struct md_op_data *op_data;
+
+ /* Call getattr by fid, so do not provide name at all. */
+ op_data = ll_prep_md_op_data(NULL, dentry->d_parent->d_inode,
+ dentry->d_inode, NULL, 0, 0,
+ LUSTRE_OPC_ANY, NULL);
+ if (IS_ERR(op_data))
+ RETURN(PTR_ERR(op_data));
+
+ oit.it_flags |= O_CHECK_STALE;
+ rc = md_intent_lock(exp, op_data, NULL, 0,
+ /* we are not interested in name
+ based lookup */
+ &oit, 0, &req,
+ ll_md_blocking_ast, 0);
+ ll_finish_md_op_data(op_data);
+ oit.it_flags &= ~O_CHECK_STALE;
+ if (rc < 0) {
+ rc = ll_inode_revalidate_fini(inode, rc);
+ GOTO (out, rc);
+ }
+
+ rc = ll_revalidate_it_finish(req, DLM_REPLY_REC_OFF, &oit, dentry);
+ if (rc != 0) {
+ ll_intent_release(&oit);
+ GOTO(out, rc);
+ }
+
+ /* Unlinked? Unhash dentry, so it is not picked up later by
+ do_lookup() -> ll_revalidate_it(). We cannot use d_drop
+ here to preserve get_cwd functionality on 2.6.
+ Bug 10503 */
+ if (!dentry->d_inode->i_nlink) {
+ spin_lock(&dcache_lock);
+ ll_drop_dentry(dentry);
+ spin_unlock(&dcache_lock);
+ }
+
+ ll_lookup_finish_locks(&oit, dentry);
+ } else if (!ll_have_md_lock(dentry->d_inode, MDS_INODELOCK_UPDATE)) {
struct ll_sb_info *sbi = ll_i2sbi(dentry->d_inode);
- struct ll_fid fid;
- unsigned long valid = 0;
+ obd_valid valid = OBD_MD_FLGETATTR;
+ struct obd_capa *oc;
int ealen = 0;
if (S_ISREG(inode->i_mode)) {
- ealen = obd_size_diskmd(sbi->ll_osc_exp, NULL);
- valid |= OBD_MD_FLEASIZE;
- }
- ll_inode2fid(&fid, inode);
- rc = mdc_getattr(sbi->ll_mdc_exp, &fid, valid, ealen, &req);
- if (rc) {
- CERROR("failure %d inode %lu\n", rc, inode->i_ino);
- RETURN(-abs(rc));
+ rc = ll_get_max_mdsize(sbi, &ealen);
+ if (rc)
+ RETURN(rc);
+ valid |= OBD_MD_FLEASIZE | OBD_MD_FLMODEASIZE;
}
- rc = ll_prep_inode(sbi->ll_osc_exp, &inode, req, 0, NULL);
+ /* Once OBD_CONNECT_ATTRFID is not supported, we can't find one
+ * capa for this inode. Because we only keep capas of dirs
+ * fresh. */
+ oc = ll_mdscapa_get(inode);
+ rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), oc, valid,
+ ealen, &req);
+ capa_put(oc);
if (rc) {
- ptlrpc_req_finished(req);
+ rc = ll_inode_revalidate_fini(inode, rc);
RETURN(rc);
}
- ptlrpc_req_finished(req);
+
+ rc = ll_prep_inode(&inode, req, REPLY_REC_OFF,
+ NULL);
+ if (rc)
+ GOTO(out, rc);
}
- lsm = lli->lli_smd;
- if (lsm == NULL) /* object not yet allocated, don't validate size */
- RETURN(0);
+ /* if object not yet allocated, don't validate size */
+ if (ll_i2info(inode)->lli_smd == NULL)
+ GOTO(out, rc = 0);
/* ll_glimpse_size will prefer locally cached writes if they extend
* the file */
- {
- struct ost_lvb lvb;
-
- rc = ll_glimpse_size(inode, &lvb);
- inode->i_size = lvb.lvb_size;
- }
- RETURN(rc);
+ rc = ll_glimpse_size(inode, 0);
+ EXIT;
+out:
+ ptlrpc_req_finished(req);
+ return rc;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-int ll_getattr(struct vfsmount *mnt, struct dentry *de,
- struct lookup_intent *it, struct kstat *stat)
+int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
+ struct lookup_intent *it, struct kstat *stat)
{
- int res = 0;
struct inode *inode = de->d_inode;
+ int res = 0;
res = ll_inode_revalidate_it(de, it);
- lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_GETATTR);
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_GETATTR, 1);
if (res)
return res;
stat->atime = inode->i_atime;
stat->mtime = inode->i_mtime;
stat->ctime = inode->i_ctime;
- stat->size = inode->i_size;
+#ifdef HAVE_INODE_BLKSIZE
stat->blksize = inode->i_blksize;
+#else
+ stat->blksize = 1 << inode->i_blkbits;
+#endif
+
+ ll_inode_size_lock(inode, 0);
+ stat->size = i_size_read(inode);
stat->blocks = inode->i_blocks;
+ ll_inode_size_unlock(inode, 0);
+
return 0;
}
+int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
+{
+ struct lookup_intent it = { .it_op = IT_GETATTR };
+
+ return ll_getattr_it(mnt, de, &it, stat);
+}
+
+static
+int lustre_check_acl(struct inode *inode, int mask)
+{
+#ifdef CONFIG_FS_POSIX_ACL
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct posix_acl *acl;
+ int rc;
+ ENTRY;
+
+ spin_lock(&lli->lli_lock);
+ acl = posix_acl_dup(lli->lli_posix_acl);
+ spin_unlock(&lli->lli_lock);
+
+ if (!acl)
+ RETURN(-EAGAIN);
+
+ rc = posix_acl_permission(inode, acl, mask);
+ posix_acl_release(acl);
+
+ RETURN(rc);
+#else
+ return -EAGAIN;
+#endif
+}
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10))
+int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
+{
+ CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), mask %o\n",
+ inode->i_ino, inode->i_generation, inode, mask);
+ if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
+ return lustre_check_remote_perm(inode, mask);
+
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
+ return generic_permission(inode, mask, lustre_check_acl);
+}
+#else
+int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
+{
+ int mode = inode->i_mode;
+ int rc;
+
+ CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), mask %o\n",
+ inode->i_ino, inode->i_generation, inode, mask);
+
+ if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
+ return lustre_check_remote_perm(inode, mask);
+
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
+
+ if ((mask & MAY_WRITE) && IS_RDONLY(inode) &&
+ (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)))
+ return -EROFS;
+ if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
+ return -EACCES;
+ if (current->fsuid == inode->i_uid) {
+ mode >>= 6;
+ } else if (1) {
+ if (((mode >> 3) & mask & S_IRWXO) != mask)
+ goto check_groups;
+ rc = lustre_check_acl(inode, mask);
+ if (rc == -EAGAIN)
+ goto check_groups;
+ if (rc == -EACCES)
+ goto check_capabilities;
+ return rc;
+ } else {
+check_groups:
+ if (in_group_p(inode->i_gid))
+ mode >>= 3;
+ }
+ if ((mode & mask & S_IRWXO) == mask)
+ return 0;
+
+check_capabilities:
+ if (!(mask & MAY_EXEC) ||
+ (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode))
+ if (capable(CAP_DAC_OVERRIDE))
+ return 0;
+
+ if (capable(CAP_DAC_READ_SEARCH) && ((mask == MAY_READ) ||
+ (S_ISDIR(inode->i_mode) && !(mask & MAY_WRITE))))
+ return 0;
+
+ return -EACCES;
+}
#endif
+/* -o localflock - only provides locally consistent flock locks */
struct file_operations ll_file_operations = {
.read = ll_file_read,
.write = ll_file_write,
.ioctl = ll_file_ioctl,
.open = ll_file_open,
.release = ll_file_release,
- .mmap = generic_file_mmap,
+ .mmap = ll_file_mmap,
+ .llseek = ll_file_seek,
+ .sendfile = ll_file_sendfile,
+ .fsync = ll_fsync,
+};
+
+struct file_operations ll_file_operations_flock = {
+ .read = ll_file_read,
+ .write = ll_file_write,
+ .ioctl = ll_file_ioctl,
+ .open = ll_file_open,
+ .release = ll_file_release,
+ .mmap = ll_file_mmap,
.llseek = ll_file_seek,
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
- .sendfile = generic_file_sendfile,
+ .sendfile = ll_file_sendfile,
+ .fsync = ll_fsync,
+#ifdef HAVE_F_OP_FLOCK
+ .flock = ll_file_flock,
#endif
+ .lock = ll_file_flock
+};
+
+/* These are for -o noflock - to return ENOSYS on flock calls */
+struct file_operations ll_file_operations_noflock = {
+ .read = ll_file_read,
+ .write = ll_file_write,
+ .ioctl = ll_file_ioctl,
+ .open = ll_file_open,
+ .release = ll_file_release,
+ .mmap = ll_file_mmap,
+ .llseek = ll_file_seek,
+ .sendfile = ll_file_sendfile,
.fsync = ll_fsync,
- //.lock ll_file_flock
+#ifdef HAVE_F_OP_FLOCK
+ .flock = ll_file_noflock,
+#endif
+ .lock = ll_file_noflock
};
struct inode_operations ll_file_inode_operations = {
+#ifdef HAVE_VFS_INTENT_PATCHES
.setattr_raw = ll_setattr_raw,
+#endif
.setattr = ll_setattr,
.truncate = ll_truncate,
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
- .getattr_it = ll_getattr,
-#else
- .revalidate_it = ll_inode_revalidate_it,
-#endif
+ .getattr = ll_getattr,
+ .permission = ll_inode_permission,
+ .setxattr = ll_setxattr,
+ .getxattr = ll_getxattr,
+ .listxattr = ll_listxattr,
+ .removexattr = ll_removexattr,
};
+/* dynamic ioctl number support routins */
+static struct llioc_ctl_data {
+ struct rw_semaphore ioc_sem;
+ struct list_head ioc_head;
+} llioc = {
+ __RWSEM_INITIALIZER(llioc.ioc_sem),
+ CFS_LIST_HEAD_INIT(llioc.ioc_head)
+};
+
+
+struct llioc_data {
+ struct list_head iocd_list;
+ unsigned int iocd_size;
+ llioc_callback_t iocd_cb;
+ unsigned int iocd_count;
+ unsigned int iocd_cmd[0];
+};
+
+void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd)
+{
+ unsigned int size;
+ struct llioc_data *in_data = NULL;
+ ENTRY;
+
+ if (cb == NULL || cmd == NULL ||
+ count > LLIOC_MAX_CMD || count < 0)
+ RETURN(NULL);
+
+ size = sizeof(*in_data) + count * sizeof(unsigned int);
+ OBD_ALLOC(in_data, size);
+ if (in_data == NULL)
+ RETURN(NULL);
+
+ memset(in_data, 0, sizeof(*in_data));
+ in_data->iocd_size = size;
+ in_data->iocd_cb = cb;
+ in_data->iocd_count = count;
+ memcpy(in_data->iocd_cmd, cmd, sizeof(unsigned int) * count);
+
+ down_write(&llioc.ioc_sem);
+ list_add_tail(&in_data->iocd_list, &llioc.ioc_head);
+ up_write(&llioc.ioc_sem);
+
+ RETURN(in_data);
+}
+
+void ll_iocontrol_unregister(void *magic)
+{
+ struct llioc_data *tmp;
+
+ if (magic == NULL)
+ return;
+
+ down_write(&llioc.ioc_sem);
+ list_for_each_entry(tmp, &llioc.ioc_head, iocd_list) {
+ if (tmp == magic) {
+ unsigned int size = tmp->iocd_size;
+
+ list_del(&tmp->iocd_list);
+ up_write(&llioc.ioc_sem);
+
+ OBD_FREE(tmp, size);
+ return;
+ }
+ }
+ up_write(&llioc.ioc_sem);
+
+ CWARN("didn't find iocontrol register block with magic: %p\n", magic);
+}
+
+EXPORT_SYMBOL(ll_iocontrol_register);
+EXPORT_SYMBOL(ll_iocontrol_unregister);
+
+enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg, int *rcp)
+{
+ enum llioc_iter ret = LLIOC_CONT;
+ struct llioc_data *data;
+ int rc = -EINVAL, i;
+
+ down_read(&llioc.ioc_sem);
+ list_for_each_entry(data, &llioc.ioc_head, iocd_list) {
+ for (i = 0; i < data->iocd_count; i++) {
+ if (cmd != data->iocd_cmd[i])
+ continue;
+
+ ret = data->iocd_cb(inode, file, cmd, arg, data, &rc);
+ break;
+ }
+
+ if (ret == LLIOC_STOP)
+ break;
+ }
+ up_read(&llioc.ioc_sem);
+
+ if (rcp)
+ *rcp = rc;
+ return ret;
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff