diff options
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index dfa09a277b56..d6df62fc810c 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -90,12 +90,9 @@ static struct inode *ext4_get_journal_inode(struct super_block *sb, /* * Lock ordering * - * Note the difference between i_mmap_sem (EXT4_I(inode)->i_mmap_sem) and - * i_mmap_rwsem (inode->i_mmap_rwsem)! - * * page fault path: - * mmap_lock -> sb_start_pagefault -> i_mmap_sem (r) -> transaction start -> - * page lock -> i_data_sem (rw) + * mmap_lock -> sb_start_pagefault -> invalidate_lock (r) -> transaction start + * -> page lock -> i_data_sem (rw) * * buffered write path: * sb_start_write -> i_mutex -> mmap_lock @@ -103,8 +100,9 @@ static struct inode *ext4_get_journal_inode(struct super_block *sb, * i_data_sem (rw) * * truncate: - * sb_start_write -> i_mutex -> i_mmap_sem (w) -> i_mmap_rwsem (w) -> page lock - * sb_start_write -> i_mutex -> i_mmap_sem (w) -> transaction start -> + * sb_start_write -> i_mutex -> invalidate_lock (w) -> i_mmap_rwsem (w) -> + * page lock + * sb_start_write -> i_mutex -> invalidate_lock (w) -> transaction start -> * i_data_sem (rw) * * direct IO: @@ -1360,7 +1358,6 @@ static void init_once(void *foo) INIT_LIST_HEAD(&ei->i_orphan); init_rwsem(&ei->xattr_sem); init_rwsem(&ei->i_data_sem); - init_rwsem(&ei->i_mmap_sem); inode_init_once(&ei->vfs_inode); ext4_fc_init_inode(&ei->vfs_inode); } |