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[v6,11/20] vfs: make do_unlinkat retry on ESTALE errors

Message ID 1347027507-20956-12-git-send-email-jlayton@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jeff Layton Sept. 7, 2012, 2:18 p.m. UTC 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
---
 fs/namei.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
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Patch

diff --git a/fs/namei.c b/fs/namei.c
index a9dd63f..77c2b1055 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3446,8 +3446,11 @@  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);
 
@@ -3485,6 +3488,10 @@  exit2:
 exit1:
 	path_put(&nd.path);
 	putname(name);
+	if (retry_estale(error, try++)) {
+		lookup_flags |= LOOKUP_REVAL;
+		goto retry;
+	}
 	return error;
 
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