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UPSTREAM: loop: Fix missing discard support when using LOOP_CONFIGURE

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Without calling loop_config_discard() the discard flag and parameters
aren't set/updated for the loop device and worst-case they could
indicate discard support when it isn't the case (ex: if the
LOOP_SET_STATUS ioctl was used with a different file prior to
LOOP_CONFIGURE).

Cc: <stable@vger.kernel.org> # 5.8.x-
Fixes: 3448914e8cc5 ("loop: Add LOOP_CONFIGURE ioctl")
Signed-off-by: Kristian Klausen <kristian@klausen.dk>
Link: https://lore.kernel.org/r/20210618115157.31452-1-kristian@klausen.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
(cherry picked from commit 2b9ac22b12a266eb4fec246a07b504dd4983b16b)
Bug: 187129171
Signed-off-by: Connor O'Brien <connoro@google.com>
Change-Id: I5dca23cbb70d4951101589efb5384444e443817f
This commit is contained in:
Kristian Klausen 2021-06-18 13:51:57 +02:00 • committed by Connor O'Brien
commit 8557d5a891
1 changed files with 1 additions and 0 deletions
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1
drivers/block/loop.c
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@ -1161,6 +1161,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
blk_queue_physical_block_size(lo->lo_queue, bsize);
blk_queue_io_min(lo->lo_queue, bsize);
loop_config_discard(lo);
loop_update_rotational(lo);
loop_update_dio(lo);
loop_sysfs_init(lo);