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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-07-28 06:11:47 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-08-01 01:41:17 -0400 |
| commit | b12362bdb61a230a67daa77bcd2a11e59b2802e1 (patch) | |
| tree | f85752d085d3618207ef6aa5b7d8a10910201fc5 /kernel/sched_debug.c | |
| 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>
Diffstat (limited to 'kernel/sched_debug.c')
0 files changed, 0 insertions, 0 deletions