Messages in this thread Patch in this message | | | From | Pranith Kumar <> | Subject | [PATCH 05/16] overlayfs: Replace smp_read_barrier_depends() with lockless_dereference() | Date | Thu, 13 Nov 2014 14:24:11 -0500 |
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Recently lockless_dereference() was added which can be used in place of hard-coding smp_read_barrier_depends(). The following PATCH makes the change.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> --- fs/overlayfs/super.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 08b704c..b0f050e 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -84,12 +84,10 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry) static struct dentry *ovl_upperdentry_dereference(struct ovl_entry *oe) { - struct dentry *upperdentry = ACCESS_ONCE(oe->__upperdentry); /* * Make sure to order reads to upperdentry wrt ovl_dentry_update() */ - smp_read_barrier_depends(); - return upperdentry; + return lockless_dereference(oe->__upperdentry); } void ovl_path_upper(struct dentry *dentry, struct path *path) -- 1.9.1
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