| commit | b12362bdb61a230a67daa77bcd2a11e59b2802e1 | [log] [tgz] |
|---|---|---|
| author | Eric Dumazet <eric.dumazet@gmail.com> | Thu Jul 28 06:11:47 2011 +0200 |
| committer | Al Viro <viro@zeniv.linux.org.uk> | Mon Aug 01 01:41:17 2011 -0400 |
| tree | f85752d085d3618207ef6aa5b7d8a10910201fc5 | |
| parent | 5a30d8a2b8ddd5102c440c7e5a7c8e1fd729c818 [diff] |
vfs: conditionally call inode_wb_list_del() Some inodes (pipes, sockets, ...) are not in bdi writeback list. evict() can avoid calling inode_wb_list_del() and its expensive spinlock by checking inode i_wb_list being empty or not. At this point, no other cpu/user can concurrently manipulate this inode i_wb_list Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>