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vfs: dont chain pipe/anon/socket on superblock s_inodes list

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Workloads using pipes and sockets hit inode_sb_list_lock contention.

superblock s_inodes list is needed for quota, dirty, pagecache and
fsnotify management. pipe/anon/socket fs are clearly not candidates for
these.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Eric Dumazet
2011-07-26 11:36:34 +02:00
committed by Al Viro
parent 5b9f456772
commit a209dfc7b0
5 changed files with 35 additions and 13 deletions
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2
fs/pipe.c
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@@ -948,7 +948,7 @@ static const struct dentry_operations pipefs_dentry_operations = {
static struct inode * get_pipe_inode(void)
{
struct inode *inode = new_inode(pipe_mnt->mnt_sb);
struct inode *inode = new_inode_pseudo(pipe_mnt->mnt_sb);
struct pipe_inode_info *pipe;
if (!inode)