]> git.baikalelectronics.ru Git - kernel.git/commit
loop: Set correct device size when using LOOP_CONFIGURE
authorMartijn Coenen <maco@android.com>
Tue, 25 Aug 2020 07:18:29 +0000 (09:18 +0200)
committerJens Axboe <axboe@kernel.dk>
Wed, 26 Aug 2020 15:30:31 +0000 (09:30 -0600)
commit79e5dc59e2974a48764269fa9ff544ae8ffe3338
treebbf59ef6b7b05d37c3b7fc25c14e6a8715358882
parentacb19e17c5134dd78668c429ecba5b481f038e6a
loop: Set correct device size when using LOOP_CONFIGURE

The device size calculation was done before processing the loop
configuration, which meant that the we set the size on the underlying
block device incorrectly in case lo_offset/lo_sizelimit were set in the
configuration. Delay computing the size until we've setup the device
parameters correctly.

Fixes: 3448914e8cc5("loop: Add LOOP_CONFIGURE ioctl")
Reported-by: Lennart Poettering <mzxreary@0pointer.de>
Tested-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
Signed-off-by: Martijn Coenen <maco@android.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/block/loop.c