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dm bufio: remove redundant __GFP_NOWARN

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GFP_NOWAIT already includes __GFP_NOWARN, so let's remove the redundant
__GFP_NOWARN.  Also update comments to clarify the flag semantics.

Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
This commit is contained in:
Qianfeng Rong 2025-08-11 20:36:36 +08:00 committed by Mikulas Patocka
parent d4f00a584b
commit 31a9403b0d
1 changed files with 5 additions and 5 deletions
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10
drivers/md/dm-bufio.c
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@ -1337,7 +1337,7 @@ static void use_bio(struct dm_buffer *b, enum req_op op, sector_t sector,
char *ptr;
unsigned int len;
bio = bio_kmalloc(1, GFP_NOWAIT | __GFP_NORETRY | __GFP_NOWARN);
bio = bio_kmalloc(1, GFP_NOWAIT);
if (!bio) {
use_dmio(b, op, sector, n_sectors, offset, ioprio);
return;
@ -1601,18 +1601,18 @@ static struct dm_buffer *__alloc_buffer_wait_no_callback(struct dm_bufio_client
* dm-bufio is resistant to allocation failures (it just keeps
* one buffer reserved in cases all the allocations fail).
* So set flags to not try too hard:
* GFP_NOWAIT: don't wait; if we need to sleep we'll release our
* mutex and wait ourselves.
* GFP_NOWAIT: don't wait and don't print a warning in case of
* failure; if we need to sleep we'll release our mutex
* and wait ourselves.
* __GFP_NORETRY: don't retry and rather return failure
* __GFP_NOMEMALLOC: don't use emergency reserves
* __GFP_NOWARN: don't print a warning in case of failure
*
* For debugging, if we set the cache size to 1, no new buffers will
* be allocated.
*/
while (1) {
if (dm_bufio_cache_size_latch != 1) {
b = alloc_buffer(c, GFP_NOWAIT | __GFP_NORETRY | __GFP_NOMEMALLOC | __GFP_NOWARN);
b = alloc_buffer(c, GFP_NOWAIT | __GFP_NORETRY | __GFP_NOMEMALLOC);
if (b)
return b;
}