Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx> --- fs/stat.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/fs/stat.c b/fs/stat.c index d90258d..9719df1 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -300,14 +300,21 @@ SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname, struct path path; int error; int empty = 0; + unsigned int try = 0; + unsigned int lookup_flags = LOOKUP_EMPTY; if (bufsiz <= 0) return -EINVAL; - error = user_path_at_empty(dfd, pathname, LOOKUP_EMPTY, &path, &empty); - if (!error) { - struct inode *inode = path.dentry->d_inode; + do { + struct inode *inode; + + error = user_path_at_empty(dfd, pathname, lookup_flags, + &path, &empty); + if (error) + break; + inode = path.dentry->d_inode; error = empty ? -ENOENT : -EINVAL; if (inode->i_op->readlink) { error = security_inode_readlink(path.dentry); @@ -318,7 +325,8 @@ SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname, } } path_put(&path); - } + lookup_flags |= LOOKUP_REVAL; + } while (retry_estale(error, try++)); return error; } -- 1.7.11.4 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html