From: Anatol Pomozov Date: Tue, 18 Sep 2012 17:38:59 +0000 (-0400) Subject: ext4: make orphan functions be no-op in no-journal mode X-Git-Tag: v2.6.32.61~56 X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=9b3c0cff40f10b6d6fd852e7313719a168a63d7e;p=thirdparty%2Fkernel%2Fstable.git ext4: make orphan functions be no-op in no-journal mode commit c9b92530a723ac5ef8e352885a1862b18f31b2f5 upstream. 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 Signed-off-by: "Theodore Ts'o" Signed-off-by: Willy Tarreau --- diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 828c9c91f42af..230bef5e2aec8 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);