| From | Jeff Layton <> | Subject | [PATCH v7 43/49] vfs: allow lsetxattr() to retry once on ESTALE errors | Date | Mon, 1 Oct 2012 20:16:52 -0400 |
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Signed-off-by: Jeff Layton <jlayton@redhat.com> --- fs/xattr.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-)
diff --git a/fs/xattr.c b/fs/xattr.c index ba286ba..d981635 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -388,16 +388,21 @@ SYSCALL_DEFINE5(lsetxattr, const char __user *, pathname, { struct path path; int error; + unsigned int try = 0; + unsigned int lookup_flags = 0; - error = user_lpath(pathname, &path); - if (error) - return error; - error = mnt_want_write(path.mnt); - if (!error) { - error = setxattr(path.dentry, name, value, size, flags); - mnt_drop_write(path.mnt); - } - path_put(&path); + do { + error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path); + if (error) + break; + error = mnt_want_write(path.mnt); + if (!error) { + error = setxattr(path.dentry, name, value, size, flags); + mnt_drop_write(path.mnt); + } + path_put(&path); + lookup_flags |= LOOKUP_REVAL; + } while (retry_estale(error, try++)); return error; } -- 1.7.11.4
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