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(parent: d0ca6d8) | patch
nullb: support discard
authorShaohua Li <shli@fb.com>
Mon, 14 Aug 2017 22:04:57 +0000 (15:04 -0700)
committerJens Axboe <axboe@kernel.dk>
Wed, 23 Aug 2017 14:54:08 +0000 (08:54 -0600)
commit7d3fa5086e8c3aca497d5c6e1673a3f6dbce2c65
tree149473e4af24728a64174e2ed3469ec1241643fctree | snapshot
parentd0ca6d86d68d83881644f254a7413fc6a2639ad6commit | diff
nullb: support discard

discard makes sense for memory backed disk. And also it's useful to test
if upper layer supports dicard correctly.

User configures 'discard' attribute to enable/disable dicard support.

Based on original patch from Kyungchan Koh

Signed-off-by: Kyungchan Koh <kkc6196@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/block/null_blk.c diff | blob | history
Linux Kernel Source Tree.