From 972567f14cbcd437e9a88a73836bbc2ee0720b5f Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Thu, 20 Dec 2012 16:00:10 -0500 Subject: vfs: fix mknodat to retry on ESTALE errors Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- fs/namei.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'fs/namei.c') diff --git a/fs/namei.c b/fs/namei.c index 8f8e41f6eb5..b70c191b7e2 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3172,12 +3172,13 @@ SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, struct dentry *dentry; struct path path; int error; + unsigned int lookup_flags = 0; error = may_mknod(mode); if (error) return error; - - dentry = user_path_create(dfd, filename, &path, 0); +retry: + dentry = user_path_create(dfd, filename, &path, lookup_flags); if (IS_ERR(dentry)) return PTR_ERR(dentry); @@ -3200,6 +3201,10 @@ SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, } out: done_path_create(&path, dentry); + if (retry_estale(error, lookup_flags)) { + lookup_flags |= LOOKUP_REVAL; + goto retry; + } return error; } -- cgit v1.2.3