diff options
| author | Dave Chinner <dchinner@redhat.com> | 2011-03-22 22:23:41 +1100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-24 21:17:51 -0400 |
| commit | a66979abad090b2765a6c6790c9fdeab996833f2 (patch) | |
| tree | e48b2d0fac8f96456286a503aeeb952620234961 /mm/rmap.c | |
| parent | 55fa6091d83160ca772fc37cebae45d42695a708 (diff) | |
| download | lwn-a66979abad090b2765a6c6790c9fdeab996833f2.tar.gz lwn-a66979abad090b2765a6c6790c9fdeab996833f2.zip | |
fs: move i_wb_list out from under inode_lock
Protect the inode writeback list with a new global lock
inode_wb_list_lock and use it to protect the list manipulations and
traversals. This lock replaces the inode_lock as the inodes on the
list can be validity checked while holding the inode->i_lock and
hence the inode_lock is no longer needed to protect the list.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 7dada0456448..8da044a1db0f 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -31,12 +31,12 @@ * swap_lock (in swap_duplicate, swap_info_get) * mmlist_lock (in mmput, drain_mmlist and others) * mapping->private_lock (in __set_page_dirty_buffers) - * inode_lock (in set_page_dirty's __mark_inode_dirty) * inode->i_lock (in set_page_dirty's __mark_inode_dirty) + * inode_wb_list_lock (in set_page_dirty's __mark_inode_dirty) * sb_lock (within inode_lock in fs/fs-writeback.c) * mapping->tree_lock (widely used, in set_page_dirty, * in arch-dependent flush_dcache_mmap_lock, - * within inode_lock in __sync_single_inode) + * within inode_wb_list_lock in __sync_single_inode) * * (code doesn't rely on that order so it could be switched around) * ->tasklist_lock |