/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Lustre Light Super operations
+ * Lustre Light name resolution
*
- * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
+ * Copyright (c) 2002-2004 Cluster File Systems, Inc.
*
* This file is part of Lustre, http://www.lustre.org.
*
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include <sys/fcntl.h>
+#include <fcntl.h>
#include <sys/queue.h>
+#ifdef HAVE_XTIO_H
+#include <xtio.h>
+#endif
#include <sysio.h>
#include <fs.h>
#include <mount.h>
#include <inode.h>
+#ifdef HAVE_FILE_H
#include <file.h>
+#endif
#undef LIST_HEAD
#include "llite_lib.h"
-static void ll_intent_drop_lock(struct lookup_intent *it)
+void ll_intent_drop_lock(struct lookup_intent *it)
{
struct lustre_handle *handle;
}
}
-static void ll_intent_release(struct lookup_intent *it)
+void ll_intent_release(struct lookup_intent *it)
{
ENTRY;
EXIT;
}
+#if 0
/*
* remove the stale inode from pnode
*/
EXIT;
return;
}
+#endif
void llu_lookup_finish_locks(struct lookup_intent *it, struct pnode *pnode)
{
+ struct inode *inode;
LASSERT(it);
LASSERT(pnode);
- if (it && pnode->p_base->pb_ino != NULL) {
- struct inode *inode = pnode->p_base->pb_ino;
- CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%lu)\n",
- inode, llu_i2info(inode)->lli_st_ino,
+ inode = pnode->p_base->pb_ino;
+ if (it->d.lustre.it_lock_mode && inode != NULL) {
+ CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%llu/%lu)\n",
+ inode, (long long)llu_i2stat(inode)->st_ino,
llu_i2info(inode)->lli_st_generation);
mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
}
- /* drop IT_LOOKUP locks */
- if (it->it_op == IT_LOOKUP)
+ /* drop lookup/getattr locks */
+ if (it->it_op == IT_LOOKUP || it->it_op == IT_GETATTR)
ll_intent_release(it);
}
case LDLM_CB_CANCELING: {
struct inode *inode = llu_inode_from_lock(lock);
struct llu_inode_info *lli;
+ struct intnl_stat *st;
+ __u64 bits = lock->l_policy_data.l_inodebits.bits;
/* Invalidate all dentries associated with this inode */
if (inode == NULL)
break;
lli = llu_i2info(inode);
+ st = llu_i2stat(inode);
- clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &lli->lli_flags);
+ if (bits & MDS_INODELOCK_UPDATE)
+ clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &lli->lli_flags);
- if (lock->l_resource->lr_name.name[0] != lli->lli_st_ino ||
- lock->l_resource->lr_name.name[1] != lli->lli_st_generation) {
- LDLM_ERROR(lock, "data mismatch with ino %lu/%lu",
- lli->lli_st_ino, lli->lli_st_generation);
+ if (lock->l_resource->lr_name.name[0] != st->st_ino ||
+ lock->l_resource->lr_name.name[1] !=lli->lli_st_generation){
+ LDLM_ERROR(lock, "data mismatch with ino %llu/%lu",
+ (long long)st->st_ino,lli->lli_st_generation);
}
- if (S_ISDIR(lli->lli_st_mode)) {
- CDEBUG(D_INODE, "invalidating inode %lu\n",
- lli->lli_st_ino);
+ if (S_ISDIR(st->st_mode) &&
+ (bits & MDS_INODELOCK_UPDATE)) {
+ CDEBUG(D_INODE, "invalidating inode %llu\n",
+ (long long)st->st_ino);
llu_invalidate_inode_pages(inode);
}
RETURN(rc);
}
-int llu_pb_revalidate(struct pnode *pnode, int flags, struct lookup_intent *it)
+static int llu_pb_revalidate(struct pnode *pnode, int flags,
+ struct lookup_intent *it)
{
struct pnode_base *pb = pnode->p_base;
- struct ll_fid pfid, cfid;
struct it_cb_data icbd;
- struct ll_uctxt ctxt;
+ struct mdc_op_data op_data;
struct ptlrpc_request *req = NULL;
struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
struct obd_export *exp;
int rc;
ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op:name=%s,intent=%x\n",
- pb->pb_name.name, it ? it->it_op : 0);
+ CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,intent=%x\n",
+ (int)pb->pb_name.len, pb->pb_name.name, it ? it->it_op : 0);
/* We don't want to cache negative dentries, so return 0 immediately.
* We believe that this is safe, that negative dentries cannot be
RETURN(0);
}
- /* check stale inode */
- if (llu_i2info(pb->pb_ino)->lli_stale_flag)
- unhook_stale_inode(pnode);
-
- /* check again because unhook_stale_inode() might generate
- * negative pnode */
- if (pb->pb_ino == NULL) {
- CDEBUG(D_INODE, "negative pb\n");
- RETURN(0);
- }
-
/* This is due to bad interaction with libsysio. remove this when we
* switched to libbsdio XXX
*/
{
struct llu_inode_info *lli = llu_i2info(pb->pb_ino);
+ struct intnl_stat *st = llu_i2stat(pb->pb_ino);
if (lli->lli_it) {
- CDEBUG(D_INODE, "inode %lu still have intent "
+ CDEBUG(D_INODE, "inode %llu still have intent "
"%p(opc 0x%x), release it\n",
- lli->lli_st_ino, lli->lli_it,
+ (long long) st->st_ino, lli->lli_it,
lli->lli_it->it_op);
ll_intent_release(lli->lli_it);
OBD_FREE(lli->lli_it, sizeof(*lli->lli_it));
}
exp = llu_i2mdcexp(pb->pb_ino);
- ll_inode2fid(&pfid, pnode->p_parent->p_base->pb_ino);
- ll_inode2fid(&cfid, pb->pb_ino);
icbd.icbd_parent = pnode->p_parent->p_base->pb_ino;
icbd.icbd_child = pnode;
it->it_op_release = ll_intent_release;
}
- ll_i2uctxt(&ctxt, pnode->p_parent->p_base->pb_ino, pb->pb_ino);
+ llu_prepare_mdc_op_data(&op_data, pnode->p_parent->p_base->pb_ino,
+ pb->pb_ino, pb->pb_name.name,pb->pb_name.len,0);
- rc = mdc_intent_lock(exp, &ctxt, &pfid,
- pb->pb_name.name, pb->pb_name.len,
- NULL, 0, &cfid, it, flags, &req,
- llu_mdc_blocking_ast);
+ rc = mdc_intent_lock(exp, &op_data, NULL, 0, it, flags,
+ &req, llu_mdc_blocking_ast,
+ LDLM_FL_CANCEL_ON_BLOCK);
/* If req is NULL, then mdc_intent_lock only tried to do a lock match;
* if all was well, it will return 1 if it found locks, 0 otherwise. */
if (req == NULL && rc >= 0)
if (rc < 0)
GOTO(out, rc = 0);
- rc = pnode_revalidate_finish(req, 1, it, pnode);
+ rc = pnode_revalidate_finish(req, DLM_REPLY_REC_OFF, it, pnode);
+ if (rc != 0) {
+ ll_intent_release(it);
+ GOTO(out, rc = 0);
+ }
+ rc = 1;
/* Note: ll_intent_lock may cause a callback, check this! */
- if (it->it_op & (IT_OPEN | IT_GETATTR))
+ if (it->it_op & IT_OPEN)
LL_SAVE_INTENT(pb->pb_ino, it);
- RETURN(1);
+
out:
- if (req)
+ if (req && rc == 1)
ptlrpc_req_finished(req);
if (rc == 0) {
LASSERT(pb->pb_ino);
pb->pb_ino = NULL;
} else {
llu_lookup_finish_locks(it, pnode);
- llu_i2info(pb->pb_ino)->lli_stale_flag = 0;
- if (it->it_op & (IT_OPEN | IT_GETATTR))
- LL_SAVE_INTENT(pb->pb_ino, it);
}
RETURN(rc);
}
struct inode *inode = NULL;
int rc;
+ /* libsysio require us generate inode right away if success.
+ * so if mds created new inode for us we need make sure it
+ * succeeded. thus for any error we can't delay to the
+ * llu_file_open() time. */
+ if (it_disposition(it, DISP_OPEN_CREATE) &&
+ it_open_error(DISP_OPEN_CREATE, it)) {
+ CDEBUG(D_INODE, "detect mds create error\n");
+ return it_open_error(DISP_OPEN_CREATE, it);
+ }
+ if (it_disposition(it, DISP_OPEN_OPEN) &&
+ it_open_error(DISP_OPEN_OPEN, it)) {
+ CDEBUG(D_INODE, "detect mds open error\n");
+ /* undo which did by mdc_intent_lock */
+ if (it_disposition(it, DISP_OPEN_CREATE) &&
+ !it_open_error(DISP_OPEN_CREATE, it)) {
+ LASSERT(request);
+ LASSERT(atomic_read(&request->rq_refcount) > 1);
+ CDEBUG(D_INODE, "dec a ref of req %p\n", request);
+ ptlrpc_req_finished(request);
+ }
+ return it_open_error(DISP_OPEN_OPEN, it);
+ }
+
/* NB 1 request reference will be taken away by ll_intent_lock()
* when I return
- * Note: libsysio require the inode must be generated here
*/
- if ((it->it_op & IT_CREAT) || !it_disposition(it, DISP_LOOKUP_NEG)) {
+ if (!it_disposition(it, DISP_LOOKUP_NEG) || (it->it_op & IT_CREAT)) {
struct lustre_md md;
struct llu_inode_info *lli;
+ struct intnl_stat *st;
ENTRY;
+ if (it_disposition(it, DISP_OPEN_CREATE))
+ ptlrpc_req_finished(request);
+
rc = mdc_req2lustre_md(request, offset, sbi->ll_osc_exp, &md);
if (rc)
RETURN(rc);
inode = llu_iget(parent->i_fs, &md);
- if (!inode) {
+ if (!inode || IS_ERR(inode)) {
/* free the lsm if we allocated one above */
if (md.lsm != NULL)
obd_free_memmd(sbi->ll_osc_exp, &md.lsm);
- RETURN(-ENOMEM);
+ RETURN(inode ? PTR_ERR(inode) : -ENOMEM);
} else if (md.lsm != NULL &&
llu_i2info(inode)->lli_smd != md.lsm) {
obd_free_memmd(sbi->ll_osc_exp, &md.lsm);
}
lli = llu_i2info(inode);
+ st = llu_i2stat(inode);
/* If this is a stat, get the authoritative file size */
- if (it->it_op == IT_GETATTR && S_ISREG(lli->lli_st_mode) &&
+ if (it->it_op == IT_GETATTR && S_ISREG(st->st_mode) &&
lli->lli_smd != NULL) {
struct lov_stripe_md *lsm = lli->lli_smd;
- struct ost_lvb lvb;
ldlm_error_t rc;
LASSERT(lsm->lsm_object_id != 0);
/* bug 2334: drop MDS lock before acquiring OST lock */
ll_intent_drop_lock(it);
- rc = llu_glimpse_size(inode, &lvb);
+ rc = llu_glimpse_size(inode);
if (rc) {
I_RELE(inode);
RETURN(rc);
}
- lli->lli_st_size = lvb.lvb_size;
}
} else {
ENTRY;
}
/* intent will be further used in cases of open()/getattr() */
- if (inode && (it->it_op & (IT_OPEN | IT_GETATTR)))
+ if (inode && (it->it_op & IT_OPEN))
LL_SAVE_INTENT(inode, it);
child->p_base->pb_ino = inode;
struct inode *llu_inode_from_lock(struct ldlm_lock *lock)
{
struct inode *inode;
- l_lock(&lock->l_resource->lr_namespace->ns_lock);
+ lock_res_and_lock(lock);
if (lock->l_ast_data) {
inode = (struct inode *)lock->l_ast_data;
} else
inode = NULL;
- l_unlock(&lock->l_resource->lr_namespace->ns_lock);
+ unlock_res_and_lock(lock);
return inode;
}
static int llu_lookup_it(struct inode *parent, struct pnode *pnode,
struct lookup_intent *it, int flags)
{
- struct ll_fid pfid;
- struct ll_uctxt ctxt;
+ struct mdc_op_data op_data;
struct it_cb_data icbd;
struct ptlrpc_request *req = NULL;
struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
icbd.icbd_child = pnode;
icbd.icbd_parent = parent;
- icbd.icbd_child = pnode;
- ll_inode2fid(&pfid, parent);
- ll_i2uctxt(&ctxt, parent, NULL);
-
- rc = mdc_intent_lock(llu_i2mdcexp(parent), &ctxt, &pfid,
- pnode->p_base->pb_name.name,
- pnode->p_base->pb_name.len,
- NULL, 0, NULL, it, flags, &req,
- llu_mdc_blocking_ast);
+
+ llu_prepare_mdc_op_data(&op_data, parent, NULL,
+ pnode->p_base->pb_name.name,
+ pnode->p_base->pb_name.len, flags);
+
+ rc = mdc_intent_lock(llu_i2mdcexp(parent), &op_data, NULL, 0, it,
+ flags, &req, llu_mdc_blocking_ast,
+ LDLM_FL_CANCEL_ON_BLOCK);
if (rc < 0)
GOTO(out, rc);
-
- rc = lookup_it_finish(req, 1, it, &icbd);
+
+ rc = lookup_it_finish(req, DLM_REPLY_REC_OFF, it, &icbd);
if (rc != 0) {
ll_intent_release(it);
GOTO(out, rc);
if (it->it_flags & O_CREAT) {
it->it_op |= IT_CREAT;
it->it_create_mode = *((int*)intent->int_arg1);
+ /* bug 7278: libsysio hack. For O_EXCL, libsysio depends on
+ this lookup to return negative result, but then there is no
+ way to find out original intent in ll_iop_open(). So we just
+ clear O_EXCL from libsysio flags here to avoid checking
+ for negative result. O_EXCL will be enforced by MDS. */
+ *((int*)intent->int_arg2) &= ~O_EXCL;
}
if (intent->int_opmask & INT_GETATTR)
int rc;
ENTRY;
+ liblustre_wait_event(0);
+
*inop = NULL;
/* the mount root inode have no name, so don't call
if (pnode->p_mount->mnt_root == pnode) {
struct inode *i = pnode->p_base->pb_ino;
*inop = i;
- return 0;
+ RETURN(0);
}
if (!pnode->p_base->pb_name.len)
if (llu_pb_revalidate(pnode, 0, it)) {
LASSERT(pnode->p_base->pb_ino);
*inop = pnode->p_base->pb_ino;
- RETURN(0);
+ GOTO(out, rc = 0);
}
rc = llu_lookup_it(pnode->p_parent->p_base->pb_ino, pnode, it, 0);
*inop = pnode->p_base->pb_ino;
}
+out:
+ liblustre_wait_event(0);
RETURN(rc);
}
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff