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authorDavid Howells <dhowells@redhat.com>2006-12-05 17:01:28 +0000
committerDavid Howells <dhowells@warthog.cambridge.redhat.com>2006-12-05 17:01:28 +0000
commit9db73724453a9350e1c22dbe732d427e2939a5c9 (patch)
tree15e3ead6413ae97398a54292acc199bee0864d42 /fs/ocfs2/journal.c
parent4c1ac1b49122b805adfa4efc620592f68dccf5db (diff)
parente62438630ca37539c8cc1553710bbfaa3cf960a7 (diff)
downloadop-kernel-dev-9db73724453a9350e1c22dbe732d427e2939a5c9.zip
op-kernel-dev-9db73724453a9350e1c22dbe732d427e2939a5c9.tar.gz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: drivers/ata/libata-scsi.c include/linux/libata.h Futher merge of Linus's head and compilation fixups. Signed-Off-By: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/ocfs2/journal.c')
-rw-r--r--fs/ocfs2/journal.c271
1 files changed, 31 insertions, 240 deletions
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index d95ee27..1d7f4ab 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -57,9 +57,6 @@ static int ocfs2_recover_node(struct ocfs2_super *osb,
static int __ocfs2_recovery_thread(void *arg);
static int ocfs2_commit_cache(struct ocfs2_super *osb);
static int ocfs2_wait_on_mount(struct ocfs2_super *osb);
-static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal,
- struct ocfs2_journal_handle *handle);
-static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle);
static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
int dirty);
static int ocfs2_trylock_journal(struct ocfs2_super *osb,
@@ -113,46 +110,18 @@ finally:
return status;
}
-struct ocfs2_journal_handle *ocfs2_alloc_handle(struct ocfs2_super *osb)
-{
- struct ocfs2_journal_handle *retval = NULL;
-
- retval = kcalloc(1, sizeof(*retval), GFP_NOFS);
- if (!retval) {
- mlog(ML_ERROR, "Failed to allocate memory for journal "
- "handle!\n");
- return NULL;
- }
-
- retval->max_buffs = 0;
- retval->num_locks = 0;
- retval->k_handle = NULL;
-
- INIT_LIST_HEAD(&retval->locks);
- INIT_LIST_HEAD(&retval->inode_list);
- retval->journal = osb->journal;
-
- return retval;
-}
-
/* pass it NULL and it will allocate a new handle object for you. If
* you pass it a handle however, it may still return error, in which
* case it has free'd the passed handle for you. */
-struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
- struct ocfs2_journal_handle *handle,
- int max_buffs)
+handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs)
{
- int ret;
journal_t *journal = osb->journal->j_journal;
-
- mlog_entry("(max_buffs = %d)\n", max_buffs);
+ handle_t *handle;
BUG_ON(!osb || !osb->journal->j_journal);
- if (ocfs2_is_hard_readonly(osb)) {
- ret = -EROFS;
- goto done_free;
- }
+ if (ocfs2_is_hard_readonly(osb))
+ return ERR_PTR(-EROFS);
BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE);
BUG_ON(max_buffs <= 0);
@@ -163,154 +132,39 @@ struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
BUG();
}
- if (!handle)
- handle = ocfs2_alloc_handle(osb);
- if (!handle) {
- ret = -ENOMEM;
- mlog(ML_ERROR, "Failed to allocate memory for journal "
- "handle!\n");
- goto done_free;
- }
-
- handle->max_buffs = max_buffs;
-
down_read(&osb->journal->j_trans_barrier);
- /* actually start the transaction now */
- handle->k_handle = journal_start(journal, max_buffs);
- if (IS_ERR(handle->k_handle)) {
+ handle = journal_start(journal, max_buffs);
+ if (IS_ERR(handle)) {
up_read(&osb->journal->j_trans_barrier);
- ret = PTR_ERR(handle->k_handle);
- handle->k_handle = NULL;
- mlog_errno(ret);
+ mlog_errno(PTR_ERR(handle));
if (is_journal_aborted(journal)) {
ocfs2_abort(osb->sb, "Detected aborted journal");
- ret = -EROFS;
+ handle = ERR_PTR(-EROFS);
}
- goto done_free;
- }
-
- atomic_inc(&(osb->journal->j_num_trans));
- handle->flags |= OCFS2_HANDLE_STARTED;
+ } else
+ atomic_inc(&(osb->journal->j_num_trans));
- mlog_exit_ptr(handle);
return handle;
-
-done_free:
- if (handle)
- ocfs2_commit_unstarted_handle(handle); /* will kfree handle */
-
- mlog_exit(ret);
- return ERR_PTR(ret);
-}
-
-void ocfs2_handle_add_inode(struct ocfs2_journal_handle *handle,
- struct inode *inode)
-{
- BUG_ON(!handle);
- BUG_ON(!inode);
-
- atomic_inc(&inode->i_count);
-
- /* we're obviously changing it... */
- mutex_lock(&inode->i_mutex);
-
- /* sanity check */
- BUG_ON(OCFS2_I(inode)->ip_handle);
- BUG_ON(!list_empty(&OCFS2_I(inode)->ip_handle_list));
-
- OCFS2_I(inode)->ip_handle = handle;
- list_move_tail(&(OCFS2_I(inode)->ip_handle_list), &(handle->inode_list));
-}
-
-static void ocfs2_handle_unlock_inodes(struct ocfs2_journal_handle *handle)
-{
- struct list_head *p, *n;
- struct inode *inode;
- struct ocfs2_inode_info *oi;
-
- list_for_each_safe(p, n, &handle->inode_list) {
- oi = list_entry(p, struct ocfs2_inode_info,
- ip_handle_list);
- inode = &oi->vfs_inode;
-
- OCFS2_I(inode)->ip_handle = NULL;
- list_del_init(&OCFS2_I(inode)->ip_handle_list);
-
- mutex_unlock(&inode->i_mutex);
- iput(inode);
- }
-}
-
-/* This is trivial so we do it out of the main commit
- * paths. Beware, it can be called from start_trans too! */
-static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle)
-{
- mlog_entry_void();
-
- BUG_ON(handle->flags & OCFS2_HANDLE_STARTED);
-
- ocfs2_handle_unlock_inodes(handle);
- /* You are allowed to add journal locks before the transaction
- * has started. */
- ocfs2_handle_cleanup_locks(handle->journal, handle);
-
- kfree(handle);
-
- mlog_exit_void();
}
-void ocfs2_commit_trans(struct ocfs2_journal_handle *handle)
+int ocfs2_commit_trans(struct ocfs2_super *osb,
+ handle_t *handle)
{
- handle_t *jbd_handle;
- int retval;
- struct ocfs2_journal *journal = handle->journal;
-
- mlog_entry_void();
+ int ret;
+ struct ocfs2_journal *journal = osb->journal;
BUG_ON(!handle);
- if (!(handle->flags & OCFS2_HANDLE_STARTED)) {
- ocfs2_commit_unstarted_handle(handle);
- mlog_exit_void();
- return;
- }
-
- /* release inode semaphores we took during this transaction */
- ocfs2_handle_unlock_inodes(handle);
-
- /* ocfs2_extend_trans may have had to call journal_restart
- * which will always commit the transaction, but may return
- * error for any number of reasons. If this is the case, we
- * clear k_handle as it's not valid any more. */
- if (handle->k_handle) {
- jbd_handle = handle->k_handle;
-
- if (handle->flags & OCFS2_HANDLE_SYNC)
- jbd_handle->h_sync = 1;
- else
- jbd_handle->h_sync = 0;
-
- /* actually stop the transaction. if we've set h_sync,
- * it'll have been committed when we return */
- retval = journal_stop(jbd_handle);
- if (retval < 0) {
- mlog_errno(retval);
- mlog(ML_ERROR, "Could not commit transaction\n");
- BUG();
- }
-
- handle->k_handle = NULL; /* it's been free'd in journal_stop */
- }
-
- ocfs2_handle_cleanup_locks(journal, handle);
+ ret = journal_stop(handle);
+ if (ret < 0)
+ mlog_errno(ret);
up_read(&journal->j_trans_barrier);
- kfree(handle);
- mlog_exit_void();
+ return ret;
}
/*
@@ -326,20 +180,18 @@ void ocfs2_commit_trans(struct ocfs2_journal_handle *handle)
* good because transaction ids haven't yet been recorded on the
* cluster locks associated with this handle.
*/
-int ocfs2_extend_trans(struct ocfs2_journal_handle *handle,
- int nblocks)
+int ocfs2_extend_trans(handle_t *handle, int nblocks)
{
int status;
BUG_ON(!handle);
- BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED));
BUG_ON(!nblocks);
mlog_entry_void();
mlog(0, "Trying to extend transaction by %d blocks\n", nblocks);
- status = journal_extend(handle->k_handle, nblocks);
+ status = journal_extend(handle, nblocks);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -347,15 +199,12 @@ int ocfs2_extend_trans(struct ocfs2_journal_handle *handle,
if (status > 0) {
mlog(0, "journal_extend failed, trying journal_restart\n");
- status = journal_restart(handle->k_handle, nblocks);
+ status = journal_restart(handle, nblocks);
if (status < 0) {
- handle->k_handle = NULL;
mlog_errno(status);
goto bail;
}
- handle->max_buffs = nblocks;
- } else
- handle->max_buffs += nblocks;
+ }
status = 0;
bail:
@@ -364,7 +213,7 @@ bail:
return status;
}
-int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
+int ocfs2_journal_access(handle_t *handle,
struct inode *inode,
struct buffer_head *bh,
int type)
@@ -374,7 +223,6 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
BUG_ON(!inode);
BUG_ON(!handle);
BUG_ON(!bh);
- BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED));
mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n",
(unsigned long long)bh->b_blocknr, type,
@@ -403,11 +251,11 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
switch (type) {
case OCFS2_JOURNAL_ACCESS_CREATE:
case OCFS2_JOURNAL_ACCESS_WRITE:
- status = journal_get_write_access(handle->k_handle, bh);
+ status = journal_get_write_access(handle, bh);
break;
case OCFS2_JOURNAL_ACCESS_UNDO:
- status = journal_get_undo_access(handle->k_handle, bh);
+ status = journal_get_undo_access(handle, bh);
break;
default:
@@ -424,17 +272,15 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
return status;
}
-int ocfs2_journal_dirty(struct ocfs2_journal_handle *handle,
+int ocfs2_journal_dirty(handle_t *handle,
struct buffer_head *bh)
{
int status;
- BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED));
-
mlog_entry("(bh->b_blocknr=%llu)\n",
(unsigned long long)bh->b_blocknr);
- status = journal_dirty_metadata(handle->k_handle, bh);
+ status = journal_dirty_metadata(handle, bh);
if (status < 0)
mlog(ML_ERROR, "Could not dirty metadata buffer. "
"(bh->b_blocknr=%llu)\n",
@@ -456,59 +302,6 @@ int ocfs2_journal_dirty_data(handle_t *handle,
return err;
}
-/* We always assume you're adding a metadata lock at level 'ex' */
-int ocfs2_handle_add_lock(struct ocfs2_journal_handle *handle,
- struct inode *inode)
-{
- int status;
- struct ocfs2_journal_lock *lock;
-
- BUG_ON(!inode);
-
- lock = kmem_cache_alloc(ocfs2_lock_cache, GFP_NOFS);
- if (!lock) {
- status = -ENOMEM;
- mlog_errno(-ENOMEM);
- goto bail;
- }
-
- if (!igrab(inode))
- BUG();
- lock->jl_inode = inode;
-
- list_add_tail(&(lock->jl_lock_list), &(handle->locks));
- handle->num_locks++;
-
- status = 0;
-bail:
- mlog_exit(status);
- return status;
-}
-
-static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal,
- struct ocfs2_journal_handle *handle)
-{
- struct list_head *p, *n;
- struct ocfs2_journal_lock *lock;
- struct inode *inode;
-
- list_for_each_safe(p, n, &(handle->locks)) {
- lock = list_entry(p, struct ocfs2_journal_lock,
- jl_lock_list);
- list_del(&lock->jl_lock_list);
- handle->num_locks--;
-
- inode = lock->jl_inode;
- ocfs2_meta_unlock(inode, 1);
- if (atomic_read(&inode->i_count) == 1)
- mlog(ML_ERROR,
- "Inode %llu, I'm doing a last iput for!",
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
- iput(inode);
- kmem_cache_free(ocfs2_lock_cache, lock);
- }
-}
-
#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * 5)
void ocfs2_set_journal_params(struct ocfs2_super *osb)
@@ -562,8 +355,7 @@ int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
/* Skip recovery waits here - journal inode metadata never
* changes in a live cluster so it can be considered an
* exception to the rule. */
- status = ocfs2_meta_lock_full(inode, NULL, &bh, 1,
- OCFS2_META_LOCK_RECOVERY);
+ status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
if (status < 0) {
if (status != -ERESTARTSYS)
mlog(ML_ERROR, "Could not get lock on journal!\n");
@@ -1161,8 +953,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
}
SET_INODE_JOURNAL(inode);
- status = ocfs2_meta_lock_full(inode, NULL, &bh, 1,
- OCFS2_META_LOCK_RECOVERY);
+ status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
if (status < 0) {
mlog(0, "status returned from ocfs2_meta_lock=%d\n", status);
if (status != -ERESTARTSYS)
@@ -1351,7 +1142,7 @@ static int ocfs2_trylock_journal(struct ocfs2_super *osb,
SET_INODE_JOURNAL(inode);
flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE;
- status = ocfs2_meta_lock_full(inode, NULL, NULL, 1, flags);
+ status = ocfs2_meta_lock_full(inode, NULL, 1, flags);
if (status < 0) {
if (status != -EAGAIN)
mlog_errno(status);
@@ -1434,7 +1225,7 @@ static int ocfs2_queue_orphans(struct ocfs2_super *osb,
}
mutex_lock(&orphan_dir_inode->i_mutex);
- status = ocfs2_meta_lock(orphan_dir_inode, NULL, NULL, 0);
+ status = ocfs2_meta_lock(orphan_dir_inode, NULL, 0);
if (status < 0) {
mlog_errno(status);
goto out;
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