From e7c0a167860620bd2938366896964f729ddaeaaa Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Mon, 21 Mar 2011 13:58:06 +0100 Subject: [PATCH] fuse: make fuse_dentry_revalidate() RCU aware Only bail out of fuse_dentry_revalidate() on LOOKUP_RCU when blocking is actually necessary. CC: Nick Piggin Signed-off-by: Miklos Szeredi --- fs/fuse/dir.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 3b84b913b16..c6ba49bd95b 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -158,10 +158,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd) { struct inode *inode; - if (nd && nd->flags & LOOKUP_RCU) - return -ECHILD; - - inode = entry->d_inode; + inode = ACCESS_ONCE(entry->d_inode); if (inode && is_bad_inode(inode)) return 0; else if (fuse_dentry_time(entry) < get_jiffies_64()) { @@ -177,6 +174,9 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd) if (!inode) return 0; + if (nd->flags & LOOKUP_RCU) + return -ECHILD; + fc = get_fuse_conn(inode); req = fuse_get_req(fc); if (IS_ERR(req)) -- 2.20.1