[PATCH v4 13/17] vfs: make do_unlinkat retry on ESTALE errors
From: Jeff Layton <hidden>
Date: 2012-07-26 11:55:16
Also in:
linux-fsdevel, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Signed-off-by: Jeff Layton <redacted> --- fs/namei.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/fs/namei.c b/fs/namei.c
index 09427f2..65e5177 100644
--- a/fs/namei.c
+++ b/fs/namei.c@@ -3262,8 +3262,14 @@ 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; - error = user_path_parent(dfd, pathname, &nd, &name); + name = getname(pathname); + if (IS_ERR(name)) + return PTR_ERR(name); +retry: + error = do_path_lookup(dfd, name, lookup_flags, &nd); if (error) return error;
@@ -3301,6 +3307,10 @@ exit3: iput(inode); /* truncate the inode here */ exit1: path_put(&nd.path); + if (retry_estale(error, try++)) { + lookup_flags |= LOOKUP_REVAL; + goto retry; + } putname(name); return error;
--
1.7.11.2