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authorJeff Layton <jlayton@redhat.com>2012-12-11 12:10:11 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-12-20 18:50:05 -0500
commit48f7530d3f722617aa7cfea62b09b0c1a8d0173e (patch)
tree3da3fbe9ec3d8f1f50679fc6d030d90d757c7b59 /fs/open.c
parentc6a9428401c00a27d3c17264934d14e284570c97 (diff)
vfs: have do_sys_truncate retry once on an ESTALE error
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/open.c')
-rw-r--r--fs/open.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/open.c b/fs/open.c
index c819bbdab47f..07449b911a4d 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -115,17 +115,23 @@ EXPORT_SYMBOL_GPL(vfs_truncate);
static long do_sys_truncate(const char __user *pathname, loff_t length)
{
+ unsigned int lookup_flags = LOOKUP_FOLLOW;
struct path path;
int error;
if (length < 0) /* sorry, but loff_t says... */
return -EINVAL;
- error = user_path(pathname, &path);
+retry:
+ error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
if (!error) {
error = vfs_truncate(&path, length);
path_put(&path);
}
+ if (retry_estale(error, lookup_flags)) {
+ lookup_flags |= LOOKUP_REVAL;
+ goto retry;
+ }
return error;
}