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    Subject[PATCH v9 23/34] vfs: make getxattr retry once on an ESTALE error
    Date
    Signed-off-by: Jeff Layton <jlayton@redhat.com>
    ---
    fs/xattr.c | 15 ++++++++++-----
    1 file changed, 10 insertions(+), 5 deletions(-)

    diff --git a/fs/xattr.c b/fs/xattr.c
    index 5a9ddba..42284fc 100644
    --- a/fs/xattr.c
    +++ b/fs/xattr.c
    @@ -486,12 +486,17 @@ SYSCALL_DEFINE4(getxattr, const char __user *, pathname,
    {
    struct path path;
    ssize_t error;
    + unsigned int try = 0;
    + unsigned int lookup_flags = LOOKUP_FOLLOW;

    - error = user_path(pathname, &path);
    - if (error)
    - return error;
    - error = getxattr(path.dentry, name, value, size);
    - path_put(&path);
    + do {
    + error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
    + if (error)
    + break;
    + error = getxattr(path.dentry, name, value, size);
    + path_put(&path);
    + lookup_flags |= LOOKUP_REVAL;
    + } while (retry_estale(error, try++));
    return error;
    }

    --
    1.7.11.7


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