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nbd: use the atomic queue limits API in nbd_set_size 

Use queue_limits_start_update / queue_limits_commit_update to update
all the limits in one go and with proper sanity checking.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240229143846.1047223-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2024-02-29 06:38:46 -08:00 committed by Jens Axboe
parent 242a49e5c8
commit 268283244c
1 changed files with 11 additions and 4 deletions
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15
drivers/block/nbd.c
View File

@ -319,6 +319,9 @@ static void nbd_mark_nsock_dead(struct nbd_device *nbd, struct nbd_sock *nsock,
static int __nbd_set_size(struct nbd_device *nbd, loff_t bytesize,
loff_t blksize)
{
struct queue_limits lim;
int error;
if (!blksize)
blksize = 1u << NBD_DEF_BLKSIZE_BITS;
@ -334,12 +337,16 @@ static int __nbd_set_size(struct nbd_device *nbd, loff_t bytesize,
if (!nbd->pid)
return 0;
lim = queue_limits_start_update(nbd->disk->queue);
if (nbd->config->flags & NBD_FLAG_SEND_TRIM)
blk_queue_max_discard_sectors(nbd->disk->queue, UINT_MAX);
lim.max_hw_discard_sectors = UINT_MAX;
else
blk_queue_max_discard_sectors(nbd->disk->queue, 0);
blk_queue_logical_block_size(nbd->disk->queue, blksize);
blk_queue_physical_block_size(nbd->disk->queue, blksize);
lim.max_hw_discard_sectors = 0;
lim.logical_block_size = blksize;
lim.physical_block_size = blksize;
error = queue_limits_commit_update(nbd->disk->queue, &lim);
if (error)
return error;
if (max_part)
set_bit(GD_NEED_PART_SCAN, &nbd->disk->state);