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author | Mark Fasheh <mark.fasheh@oracle.com> | 2006-10-06 22:04:51 (GMT) |
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committer | Mark Fasheh <mark.fasheh@oracle.com> | 2006-12-02 02:27:24 (GMT) |
commit | 8d5596c687c49c1d8812c3456946dec15d069139 (patch) | |
tree | 559019dcbc19443433f74808360268f38bc26ef0 /fs/ocfs2/namei.c | |
parent | 6d8fc40e63401be065b0aa98dfa4246deca04b8c (diff) | |
download | linux-8d5596c687c49c1d8812c3456946dec15d069139.tar.xz |
ocfs2: don't pass handle to ocfs2_meta_lock in ocfs2_rename()
Take and drop the locks directly.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/namei.c')
-rw-r--r-- | fs/ocfs2/namei.c | 56 |
1 files changed, 37 insertions, 19 deletions
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 7e9da94..5bd5f99 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -104,13 +104,6 @@ static int ocfs2_fill_new_dir(struct ocfs2_super *osb, struct buffer_head *fe_bh, struct ocfs2_alloc_context *data_ac); -static int ocfs2_double_lock(struct ocfs2_super *osb, - struct ocfs2_journal_handle *handle, - struct buffer_head **bh1, - struct inode *inode1, - struct buffer_head **bh2, - struct inode *inode2); - static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, struct inode **ret_orphan_dir, struct inode *inode, @@ -992,7 +985,6 @@ leave: * if they have the same id, then the 1st one is the only one locked. */ static int ocfs2_double_lock(struct ocfs2_super *osb, - struct ocfs2_journal_handle *handle, struct buffer_head **bh1, struct inode *inode1, struct buffer_head **bh2, @@ -1008,8 +1000,6 @@ static int ocfs2_double_lock(struct ocfs2_super *osb, (unsigned long long)oi1->ip_blkno, (unsigned long long)oi2->ip_blkno); - BUG_ON(!handle); - if (*bh1) *bh1 = NULL; if (*bh2) @@ -1029,25 +1019,41 @@ static int ocfs2_double_lock(struct ocfs2_super *osb, inode1 = tmpinode; } /* lock id2 */ - status = ocfs2_meta_lock(inode2, handle, bh2, 1); + status = ocfs2_meta_lock(inode2, NULL, bh2, 1); if (status < 0) { if (status != -ENOENT) mlog_errno(status); goto bail; } } + /* lock id1 */ - status = ocfs2_meta_lock(inode1, handle, bh1, 1); + status = ocfs2_meta_lock(inode1, NULL, bh1, 1); if (status < 0) { + /* + * An error return must mean that no cluster locks + * were held on function exit. + */ + if (oi1->ip_blkno != oi2->ip_blkno) + ocfs2_meta_unlock(inode2, 1); + if (status != -ENOENT) mlog_errno(status); - goto bail; } + bail: mlog_exit(status); return status; } +static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) +{ + ocfs2_meta_unlock(inode1, 1); + + if (inode1 != inode2) + ocfs2_meta_unlock(inode2, 1); +} + #define PARENT_INO(buffer) \ ((struct ocfs2_dir_entry *) \ ((char *)buffer + \ @@ -1058,7 +1064,8 @@ static int ocfs2_rename(struct inode *old_dir, struct inode *new_dir, struct dentry *new_dentry) { - int status = 0, rename_lock = 0; + int status = 0, rename_lock = 0, parents_locked = 0; + int old_child_locked = 0, new_child_locked = 0; struct inode *old_inode = old_dentry->d_inode; struct inode *new_inode = new_dentry->d_inode; struct inode *orphan_dir = NULL; @@ -1122,13 +1129,13 @@ static int ocfs2_rename(struct inode *old_dir, } /* if old and new are the same, this'll just do one lock. */ - status = ocfs2_double_lock(osb, handle, - &old_dir_bh, old_dir, - &new_dir_bh, new_dir); + status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, + &new_dir_bh, new_dir); if (status < 0) { mlog_errno(status); goto bail; } + parents_locked = 1; /* make sure both dirs have bhs * get an extra ref on old_dir_bh if old==new */ @@ -1149,12 +1156,13 @@ static int ocfs2_rename(struct inode *old_dir, * the vote thread on other nodes won't have to concurrently * downconvert the inode and the dentry locks. */ - status = ocfs2_meta_lock(old_inode, handle, NULL, 1); + status = ocfs2_meta_lock(old_inode, NULL, NULL, 1); if (status < 0) { if (status != -ENOENT) mlog_errno(status); goto bail; } + old_child_locked = 1; status = ocfs2_remote_dentry_delete(old_dentry); if (status < 0) { @@ -1240,12 +1248,13 @@ static int ocfs2_rename(struct inode *old_dir, goto bail; } - status = ocfs2_meta_lock(new_inode, handle, &newfe_bh, 1); + status = ocfs2_meta_lock(new_inode, NULL, &newfe_bh, 1); if (status < 0) { if (status != -ENOENT) mlog_errno(status); goto bail; } + new_child_locked = 1; status = ocfs2_remote_dentry_delete(new_dentry); if (status < 0) { @@ -1435,6 +1444,15 @@ bail: if (handle) ocfs2_commit_trans(handle); + if (parents_locked) + ocfs2_double_unlock(old_dir, new_dir); + + if (old_child_locked) + ocfs2_meta_unlock(old_inode, 1); + + if (new_child_locked) + ocfs2_meta_unlock(new_inode, 1); + if (orphan_dir) { /* This was locked for us in ocfs2_prepare_orphan_dir() */ ocfs2_meta_unlock(orphan_dir, 1); |