| Date | Tue, 04 Jun 2013 19:23:41 +0200 | From | Willy Tarreau <> | Subject | [ 131/184] ext4: make orphan functions be no-op in no-journal |
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2.6.32-longterm review patch. If anyone has any objections, please let me know.
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From: Anatol Pomozov <anatol.pomozov@gmail.com>
Instead of checking whether the handle is valid, we check if journal is enabled. This avoids taking the s_orphan_lock mutex in all cases when there is no journal in use, including the error paths where ext4_orphan_del() is called with a handle set to NULL.
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Willy Tarreau <w@1wt.eu> --- fs/ext4/namei.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 828c9c9..230bef5 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -2001,7 +2001,7 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode) struct ext4_iloc iloc; int err = 0, rc; - if (!ext4_handle_valid(handle)) + if (!EXT4_SB(sb)->s_journal) return 0; mutex_lock(&EXT4_SB(sb)->s_orphan_lock); @@ -2082,8 +2082,7 @@ int ext4_orphan_del(handle_t *handle, struct inode *inode) struct ext4_iloc iloc; int err = 0; - /* ext4_handle_valid() assumes a valid handle_t pointer */ - if (handle && !ext4_handle_valid(handle)) + if (!EXT4_SB(inode->i_sb)->s_journal) return 0; mutex_lock(&EXT4_SB(inode->i_sb)->s_orphan_lock); @@ -2102,7 +2101,7 @@ int ext4_orphan_del(handle_t *handle, struct inode *inode) * transaction handle with which to update the orphan list on * disk, but we still need to remove the inode from the linked * list in memory. */ - if (sbi->s_journal && !handle) + if (!handle) goto out; err = ext4_reserve_inode_write(handle, inode, &iloc); -- 1.7.12.2.21.g234cd45.dirty
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