redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

ovl: use lockless_dereference() for upperdentry 

Don't open code lockless_dereference() in ovl_upperdentry_dereference().

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
hifive-unleashed-5.1
Miklos Szeredi 2014-11-20 16:40:01 +01:00
parent 91c7794713
commit 71d509280f
1 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
fs/overlayfs/super.c
View File

@ -84,12 +84,7 @@ 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)