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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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net/socket.c
+1 -1
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@@ -467,7 +467,7 @@ static struct socket *sock_alloc(void)
struct inode *inode;
struct socket *sock;
inode = new_inode(sock_mnt->mnt_sb);
inode = new_inode_pseudo(sock_mnt->mnt_sb);
if (!inode)
return NULL;