scsi: add sd_unprep_fn to free discard page

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This fixes discard page leak by using q->unprep_rq_fn facility.

q->unprep_rq_fn is called when all the data buffer (req->bio and
scsi_data_buffer) in the request is freed.

sd_unprep() uses rq->buffer to free discard page allocated in
sd_prepare_discard().

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

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FUJITA Tomonori 2010-07-01 19:49:18 +09:00 • committed by Jens Axboe

parent 28018c242a

commit f1126e950d

1 changed files with 11 additions and 1 deletions

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drivers/scsi/sd.c

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