diff mbox

[v8,26/32] vfs: make llistxattr retry once on ESTALE error

Message ID 1351341219-17837-27-git-send-email-jlayton@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jeff Layton Oct. 27, 2012, 12:33 p.m. UTC 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
---
 fs/xattr.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)
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Patch

diff --git a/fs/xattr.c b/fs/xattr.c
index 8a318a4..8a30ef0 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -595,12 +595,17 @@  SYSCALL_DEFINE3(llistxattr, const char __user *, pathname, char __user *, list,
 {
 	struct path path;
 	ssize_t error;
+	unsigned int try = 0;
+	unsigned int lookup_flags = 0;
 
-	error = user_lpath(pathname, &path);
-	if (error)
-		return error;
-	error = listxattr(path.dentry, list, size);
-	path_put(&path);
+	do {
+		error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
+		if (error)
+			break;
+		error = listxattr(path.dentry, list, size);
+		path_put(&path);
+		lookup_flags |= LOOKUP_REVAL;
+	} while (retry_estale(error, try++));
 	return error;
 }