| Message ID | 1366209835-15972-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/fs/inode.c b/fs/inode.c index 6d5a282..78c342b 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -725,7 +725,7 @@ void prune_icache_sb(struct super_block *sb, int nr_to_scan) * inode to the back of the list so we don't spin on it. */ if (!spin_trylock(&inode->i_lock)) { - list_move_tail(&inode->i_lru, &sb->s_inode_lru); + list_move(&inode->i_lru, &sb->s_inode_lru); continue; }
This is a note to let you know that I have just added a patch titled vfs: Revert spurious fix to spinning prevention in to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 9d371a7191009fbe9d00c43cef6b17c12bb27c59 Mon Sep 17 00:00:00 2001 From: Suleiman Souhlal <suleiman@google.com> Date: Sat, 13 Apr 2013 16:03:06 -0700 Subject: [PATCH] vfs: Revert spurious fix to spinning prevention in prune_icache_sb commit 5b55d708335a9e3e4f61f2dadf7511502205ccd1 upstream. Revert commit 62a3ddef6181 ("vfs: fix spinning prevention in prune_icache_sb"). This commit doesn't look right: since we are looking at the tail of the list (sb->s_inode_lru.prev) if we want to skip an inode, we should put it back at the head of the list instead of the tail, otherwise we will keep spinning on it. Discovered when investigating why prune_icache_sb came top in perf reports of a swapping load. Signed-off-by: Suleiman Souhlal <suleiman@google.com> Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- fs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 1.8.1.2