From b23fb0a60379a95e10c671f646b259ea2558421e Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:35 +1100 Subject: fs: scale inode alias list Add a new lock, dcache_inode_lock, to protect the inode's i_dentry list from concurrent modification. d_alias is also protected by d_lock. Signed-off-by: Nick Piggin --- fs/nfs/getroot.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'fs/nfs') diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c index ac7b814ce16..850f67d5f0a 100644 --- a/fs/nfs/getroot.c +++ b/fs/nfs/getroot.c @@ -64,7 +64,11 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i * Oops, since the test for IS_ROOT() will fail. */ spin_lock(&dcache_lock); + spin_lock(&dcache_inode_lock); + spin_lock(&sb->s_root->d_lock); list_del_init(&sb->s_root->d_alias); + spin_unlock(&sb->s_root->d_lock); + spin_unlock(&dcache_inode_lock); spin_unlock(&dcache_lock); } return 0; -- cgit v1.2.3