[PATCH v7 31/49] vfs: make do_unlinkat retry on ESTALE errors

Jeff Layton
2012-10-02T00:17:50Z

fs/namei.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/fs/namei.c b/fs/namei.c
index 0d0b1c0..f311ed1 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3450,8 +3450,11 @@ static long do_unlinkat(int dfd, const char __user *pathname)
struct dentry *dentry;
struct nameidata nd;
struct inode *inode = NULL;
+ unsigned int try = 0;
+ unsigned int lookup_flags = LOOKUP_PARENT;

- name = user_path_parent(dfd, pathname, &nd, 0);
+retry:
+ name = user_path_parent(dfd, pathname, &nd, try);
if (IS_ERR(name))
return PTR_ERR(name);

@@ -3489,6 +3492,10 @@ exit2:
exit1:
path_put(&nd.path);
putname(name);
+ if (retry_estale(error, try++)) {
+ lookup_flags |= LOOKUP_REVAL;
+ goto retry;
+ }
return error;

slashes:
--
1.7.11.4