diff options
| author | Jeff Layton <jlayton@redhat.com> | 2012-12-20 22:00:10 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-21 00:50:02 +0100 |
| commit | 972567f14cbcd437e9a88a73836bbc2ee0720b5f (patch) | |
| tree | b83652f1c185e6ac727e4eafb5e2201bc249f7cd | |
| parent | vfs: turn is_dir argument to kern_path_create into a lookup_flags arg (diff) | |
| download | linux-972567f14cbcd437e9a88a73836bbc2ee0720b5f.tar.xz linux-972567f14cbcd437e9a88a73836bbc2ee0720b5f.zip | |
vfs: fix mknodat to retry on ESTALE errors
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/namei.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/namei.c b/fs/namei.c index 8f8e41f6eb52..b70c191b7e2b 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; } |