[PATCH v6 07/20] vfs: fix symlinkat to retry on ESTALE errors

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
 fs/namei.c | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index 9068375..ac731fc 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3524,21 +3524,25 @@ SYSCALL_DEFINE3(symlinkat, const char __user *, oldname,
 	struct getname_info *from;
 	struct dentry *dentry;
 	struct path path;
+	unsigned int try = 0;
 
 	from = getname(oldname);
 	if (IS_ERR(from))
 		return PTR_ERR(from);
 
-	dentry = user_path_create(newdfd, newname, &path, false, false);
-	error = PTR_ERR(dentry);
-	if (IS_ERR(dentry))
-		goto out_putname;
+	do {
+		dentry = user_path_create(newdfd, newname, &path, false, false);
+		if (IS_ERR(dentry)) {
+			error = PTR_ERR(dentry);
+			break;
+		}
 
-	error = security_path_symlink(&path, dentry, from->name);
-	if (!error)
-		error = vfs_symlink(path.dentry->d_inode, dentry, from->name);
-	done_path_create(&path, dentry);
-out_putname:
+		error = security_path_symlink(&path, dentry, from->name);
+		if (!error)
+			error = vfs_symlink(path.dentry->d_inode, dentry,
+						from->name);
+		done_path_create(&path, dentry);
+	} while (retry_estale(error, try++));
 	putname(from);
 	return error;
 }
-- 
1.7.11.4

--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux