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block-5.10-2020-12-05

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Merge tag 'block-5.10-2020-12-05' of git://git.kernel.dk/linux-block

Pull block fix from Jens Axboe:
 "Single fix for an issue with chunk_sectors and stacked devices"

* tag 'block-5.10-2020-12-05' of git://git.kernel.dk/linux-block:
  block: use gcd() to fix chunk_sectors limit stacking
This commit is contained in:
Linus Torvalds 2020-12-05 14:45:30 -08:00
commit be1515bad7
1 changed files with 4 additions and 1 deletions
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5
block/blk-settings.c
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@ -547,7 +547,10 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
t->io_min = max(t->io_min, b->io_min);
t->io_opt = lcm_not_zero(t->io_opt, b->io_opt);
t->chunk_sectors = lcm_not_zero(t->chunk_sectors, b->chunk_sectors);
/* Set non-power-of-2 compatible chunk_sectors boundary */
if (b->chunk_sectors)
t->chunk_sectors = gcd(t->chunk_sectors, b->chunk_sectors);
/* Physical block size a multiple of the logical block size? */
if (t->physical_block_size & (t->logical_block_size - 1)) {