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vfs: make llistxattr retry once on ESTALE error 

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
Jeff Layton 2012-12-11 12:10:17 -05:00 committed by Al Viro
parent 10a90cf36e
commit bd9bbc9842
1 changed files with 7 additions and 2 deletions
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9
fs/xattr.c
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@ -595,12 +595,17 @@ SYSCALL_DEFINE3(llistxattr, const char __user *, pathname, char __user *, list,
{
struct path path;
ssize_t error;
error = user_lpath(pathname, &path);
unsigned int lookup_flags = 0;
retry:
error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
if (error)
return error;
error = listxattr(path.dentry, list, size);
path_put(&path);
if (retry_estale(error, lookup_flags)) {
lookup_flags |= LOOKUP_REVAL;
goto retry;
}
return error;
}