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authorJavier González <javier@cnexlabs.com>2017-10-13 14:46:06 +0200
committerJens Axboe <axboe@kernel.dk>2017-10-13 16:34:57 +0200
commitbd432417681a224d9fa4a9d43be7d4edc82135b2 (patch)
treedc7156e8e68969aca51e0f63b68c8d5b182f5ccf /drivers/sh/Kconfig
parentlightnvm: pblk: avoid deadlock on low LUN config (diff)
downloadlinux-bd432417681a224d9fa4a9d43be7d4edc82135b2.tar.xz
linux-bd432417681a224d9fa4a9d43be7d4edc82135b2.zip
lightnvm: pblk: fix min size for page mempool
pblk uses an internal page mempool for allocating pages on internal bios. The main two users of this memory pool are partial reads (reads with some sectors in cache and some on media) and padded writes, which need to add dummy pages to an existing bio already containing valid data (and with a large enough bioset allocated). In both cases, the maximum number of pages per bio is defined by the maximum number of physical sectors supported by the underlying device. This patch fixes a bad mempool allocation, where the min_nr of elements on the pool was fixed (to 16), which is lower than the maximum number of sectors supported by NVMe (as of the time for this patch). Instead, use the maximum number of allowed sectors reported by the device. Reported-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/sh/Kconfig')
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