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lib/rhashtable.c: use kvzalloc() in bucket_table_alloc() when possible

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bucket_table_alloc() can be currently called with GFP_KERNEL or
GFP_ATOMIC.  For the former we basically have an open coded kvzalloc()
while the later only uses kzalloc().  Let's simplify the code a bit by
the dropping the open coded path and replace it with kvzalloc().

Link: http://lkml.kernel.org/r/20170531155145.17111-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michal Hocko 2017-07-10 15:51:55 -07:00 committed by Linus Torvalds
parent c46ecce431
commit 12e8fd6fd3
1 changed files with 3 additions and 4 deletions
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7
lib/rhashtable.c
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@ -211,11 +211,10 @@ static struct bucket_table *bucket_table_alloc(struct rhashtable *ht,
int i;
size = sizeof(*tbl) + nbuckets * sizeof(tbl->buckets[0]);
if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER) ||
gfp != GFP_KERNEL)
if (gfp != GFP_KERNEL)
tbl = kzalloc(size, gfp | __GFP_NOWARN | __GFP_NORETRY);
if (tbl == NULL && gfp == GFP_KERNEL)
tbl = vzalloc(size);
else
tbl = kvzalloc(size, gfp);
size = nbuckets;