Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/statfs.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/fs/statfs.c b/fs/statfs.c
index f8e832e..7b42ca3 100644
--- a/fs/statfs.c
+++ b/fs/statfs.c
@@ -77,11 +77,19 @@ EXPORT_SYMBOL(vfs_statfs);
int user_statfs(const char __user *pathname, struct kstatfs *st)
{
struct path path;
- int error = user_path_at(AT_FDCWD, pathname, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &path);
- if (!error) {
+ int error;
+ unsigned int try = 0;
+ unsigned int lookup_flags = LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT;
+
+ do {
+ error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
+ if (error)
+ break;
+
error = vfs_statfs(&path, st);
path_put(&path);
- }
+ lookup_flags |= LOOKUP_REVAL;
+ } while (retry_estale(error, try++));
return error;
}
--
1.7.11.7
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