#define DEBUG_SUBSYSTEM S_LLITE
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
#include <stdlib.h>
#include <string.h>
-#include <assert.h>
#include <time.h>
-#include <sys/types.h>
#include <sys/stat.h>
-#include <sys/queue.h>
-#include <fcntl.h>
+#include <sys/types.h>
#include <sys/uio.h>
-
+#include <libcfs/libcfs.h>
+#include <lustre/lustre_idl.h>
+#include <liblustre.h>
+#include <cl_object.h>
+#include <lclient.h>
+#include <lustre_dlm.h>
+#include <obd.h>
+#include <obd_class.h>
+#include <obd_support.h>
#include "llite_lib.h"
-typedef ssize_t llu_file_piov_t(const struct iovec *iovec, int iovlen,
- _SYSIO_OFF_T pos, ssize_t len,
- void *private);
-
-size_t llap_cookie_size;
-
-static int llu_lock_to_stripe_offset(struct obd_export *exp,
- struct lov_stripe_md *lsm,
- struct ldlm_lock *lock)
-{
- struct {
- char name[16];
- struct ldlm_lock *lock;
- } key = { .name = KEY_LOCK_TO_STRIPE, .lock = lock };
- __u32 stripe, vallen = sizeof(stripe);
- int rc;
- ENTRY;
-
- if (lsm == NULL || lsm->lsm_stripe_count == 1)
- RETURN(0);
-
- /* get our offset in the lov */
- rc = obd_get_info(NULL, exp, sizeof(key), &key, &vallen, &stripe, lsm);
- if (rc != 0) {
- CERROR("obd_get_info: rc = %d\n", rc);
- LBUG();
- }
- LASSERT(stripe < lsm->lsm_stripe_count);
- RETURN(stripe);
-}
-
-int llu_extent_lock_cancel_cb(struct ldlm_lock *lock,
- struct ldlm_lock_desc *new, void *data,
- int flag)
-{
- struct lustre_handle lockh = { 0 };
- int rc;
- ENTRY;
-
- if ((unsigned long)data > 0 && (unsigned long)data < 0x1000) {
- LDLM_ERROR(lock, "cancelling lock with bad data %p", data);
- LBUG();
- }
-
- switch (flag) {
- case LDLM_CB_BLOCKING:
- ldlm_lock2handle(lock, &lockh);
- rc = ldlm_cli_cancel(&lockh, 0);
- if (rc != ELDLM_OK)
- CERROR("ldlm_cli_cancel failed: %d\n", rc);
- break;
- case LDLM_CB_CANCELING: {
- struct inode *inode;
- struct llu_inode_info *lli;
- struct lov_stripe_md *lsm;
- __u32 stripe;
- __u64 kms;
-
- /* This lock wasn't granted, don't try to evict pages */
- if (lock->l_req_mode != lock->l_granted_mode)
- RETURN(0);
-
- inode = llu_inode_from_lock(lock);
- if (!inode)
- RETURN(0);
- lli= llu_i2info(inode);
- if (!lli)
- goto iput;
- if (!lli->lli_has_smd)
- goto iput;
-
- lsm = ccc_inode_lsm_get(inode);
- if (lsm == NULL)
- goto iput;
-
- stripe = llu_lock_to_stripe_offset(llu_i2obdexp(inode),
- lsm, lock);
- lock_res_and_lock(lock);
- kms = ldlm_extent_shift_kms(lock,
- lsm->lsm_oinfo[stripe]->loi_kms);
- unlock_res_and_lock(lock);
- if (lsm->lsm_oinfo[stripe]->loi_kms != kms)
- LDLM_DEBUG(lock, "updating kms from "LPU64" to "LPU64,
- lsm->lsm_oinfo[stripe]->loi_kms, kms);
- loi_kms_set(lsm->lsm_oinfo[stripe], kms);
- ccc_inode_lsm_put(inode, lsm);
-iput:
- I_RELE(inode);
- break;
- }
- default:
- LBUG();
- }
-
- RETURN(0);
-}
-
-static int llu_glimpse_callback(struct ldlm_lock *lock, void *reqp)
-{
- struct ptlrpc_request *req = reqp;
- struct inode *inode = llu_inode_from_lock(lock);
- struct llu_inode_info *lli;
- struct ost_lvb *lvb;
- struct lov_stripe_md *lsm;
- int rc, stripe = 0;
- ENTRY;
-
- if (inode == NULL)
- GOTO(out, rc = -ELDLM_NO_LOCK_DATA);
- lli = llu_i2info(inode);
- if (lli == NULL)
- GOTO(iput, rc = -ELDLM_NO_LOCK_DATA);
-
- req_capsule_extend(&req->rq_pill, &RQF_LDLM_GL_CALLBACK);
- if (exp_connect_lvb_type(req->rq_export))
- req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
- sizeof(*lvb));
- else
- req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
- sizeof(struct ost_lvb_v1));
- rc = req_capsule_server_pack(&req->rq_pill);
- if (rc) {
- CERROR("failed pack reply: %d\n", rc);
- GOTO(iput, rc);
- }
-
- lsm = ccc_inode_lsm_get(inode);
- if (lsm == NULL)
- GOTO(iput, rc = -ELDLM_NO_LOCK_DATA);
-
- /* First, find out which stripe index this lock corresponds to. */
- stripe = llu_lock_to_stripe_offset(llu_i2obdexp(inode), lsm, lock);
-
- lvb = req_capsule_server_get(&req->rq_pill, &RMF_DLM_LVB);
- lvb->lvb_size = lsm->lsm_oinfo[stripe]->loi_kms;
- ccc_inode_lsm_put(inode, lsm);
-
- LDLM_DEBUG(lock, "i_size: "LPU64" -> stripe number %u -> kms "LPU64,
- (__u64)llu_i2stat(inode)->st_size, stripe,lvb->lvb_size);
- iput:
- I_RELE(inode);
- out:
- /* 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, 1, NULL, NULL);
-
- req->rq_status = rc;
- return rc;
-}
-
int llu_merge_lvb(const struct lu_env *env, struct inode *inode)
{
struct llu_inode_info *lli = llu_i2info(inode);
RETURN(rc);
}
-int llu_extent_lock(struct ll_file_data *fd, struct inode *inode,
- struct lov_stripe_md *lsm, int mode,
- ldlm_policy_data_t *policy, struct lustre_handle *lockh,
- int ast_flags)
-{
- struct llu_sb_info *sbi = llu_i2sbi(inode);
- struct intnl_stat *st = llu_i2stat(inode);
- struct ldlm_enqueue_info einfo = { 0 };
- struct obd_info oinfo = { { { 0 } } };
- struct ost_lvb lvb;
- int rc;
- ENTRY;
-
- LASSERT(!lustre_handle_is_used(lockh));
- CLASSERT(ELDLM_OK == 0);
-
- /* XXX phil: can we do this? won't it screw the file size up? */
- if ((fd && (fd->fd_flags & LL_FILE_IGNORE_LOCK)) ||
- (sbi->ll_flags & LL_SBI_NOLCK) || mode == LCK_NL)
- RETURN(0);
-
- CDEBUG(D_DLMTRACE, "Locking inode "LPU64", start "LPU64" end "LPU64"\n",
- (__u64)st->st_ino, policy->l_extent.start,
- policy->l_extent.end);
-
- einfo.ei_type = LDLM_EXTENT;
- einfo.ei_mode = mode;
- einfo.ei_cb_bl = llu_extent_lock_cancel_cb;
- einfo.ei_cb_cp = ldlm_completion_ast;
- einfo.ei_cb_gl = llu_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;
-
- 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)
- st->st_size = lvb.lvb_size;
-
- if (rc == 0) {
- st->st_mtime = lvb.lvb_mtime;
- st->st_atime = lvb.lvb_atime;
- st->st_ctime = lvb.lvb_ctime;
- }
-
- RETURN(rc);
-}
-
-int llu_extent_unlock(struct ll_file_data *fd, struct inode *inode,
- struct lov_stripe_md *lsm, int mode,
- struct lustre_handle *lockh)
-{
- struct llu_sb_info *sbi = llu_i2sbi(inode);
- int rc;
- ENTRY;
-
- CLASSERT(ELDLM_OK == 0);
-
- /* XXX phil: can we do this? won't it screw the file size up? */
- if ((fd && (fd->fd_flags & LL_FILE_IGNORE_LOCK)) ||
- (sbi->ll_flags & LL_SBI_NOLCK) || mode == LCK_NL)
- RETURN(0);
-
- rc = obd_cancel(sbi->ll_dt_exp, lsm, mode, lockh);
-
- RETURN(rc);
-}
-
static
ssize_t llu_file_prwv(const struct iovec *iovec, int iovlen,
_SYSIO_OFF_T pos, ssize_t len,
I_REF(ino);
session->lis_inode = ino;
- session->lis_max_groups = ngroups;
session->lis_cmd = cmd;
return session;
}
struct ioctx *ioctx,
int read)
{
- struct llu_io_session *session;
- ssize_t cc;
- int cmd = read ? OBD_BRW_READ : OBD_BRW_WRITE;
- ENTRY;
+ struct llu_io_session *session;
+ ssize_t cc;
+ int cmd = read ? OBD_BRW_READ : OBD_BRW_WRITE;
+ ENTRY;
- LASSERT(ioctx->ioctx_xtvlen >= 0);
- LASSERT(ioctx->ioctx_iovlen >= 0);
+ LASSERT(ioctx->ioctx_iovlen > 0);
- liblustre_wait_event(0);
+ liblustre_wait_event(0);
- if (!ioctx->ioctx_xtvlen)
- RETURN(0);
+ if (ioctx->ioctx_xtvlen == 0)
+ RETURN(0);
/* XXX consider other types later */
if (S_ISDIR(llu_i2stat(ino)->st_mode))
git://git.whamcloud.com / fs / lustre-release.git / blobdiff