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/ocfs2/dcache.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/ocfs2/dcache.c') diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c index 35e5f5a9ef59..c31b5c647ac7 100644 --- a/fs/ocfs2/dcache.c +++ b/fs/ocfs2/dcache.c @@ -170,7 +170,7 @@ struct dentry *ocfs2_find_local_alias(struct inode *inode, struct dentry *dentry = NULL; spin_lock(&dcache_lock); - + spin_lock(&dcache_inode_lock); list_for_each(p, &inode->i_dentry) { dentry = list_entry(p, struct dentry, d_alias); @@ -188,6 +188,7 @@ struct dentry *ocfs2_find_local_alias(struct inode *inode, dentry = NULL; } + spin_unlock(&dcache_inode_lock); spin_unlock(&dcache_lock); return dentry; -- cgit v1.2.3