lkml.org 
[lkml]   [2018]   [May]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/6] lib/rhashtable: guarantee initial hashtable allocation
On Thu, May 24, 2018 at 02:11:31PM -0700, Davidlohr Bueso wrote:
>
> + /*
> + * This is api initialization and thus we need to guarantee the
> + * initial rhashtable allocation. Upon failure, retry with a
> + * smallest possible size, otherwise we exhaust our options with
> + * __GFP_NOFAIL.
> + */
> tbl = bucket_table_alloc(ht, size, GFP_KERNEL);
> - if (tbl == NULL)
> - return -ENOMEM;
> + if (unlikely(tbl == NULL)) {
> + size = HASH_MIN_SIZE;

You should also take min_size into account. Yes I know the current
code ignores it unless you also set nelem_hint. But that's just a
bug.

Cheers,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

\
 
 \ /
  Last update: 2018-05-28 12:03    [W:0.182 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site