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dm crypt: tidy sector 

Prepare local sector variable (offset) for later patch.
Do not update io->sector for still-running I/O.

No functional change.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Milan Broz 2008-10-21 17:45:00 +01:00 committed by Alasdair G Kergon
parent 586e80e6ee
commit b635b00e0e
1 changed files with 5 additions and 2 deletions
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7
drivers/md/dm-crypt.c
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@ -688,7 +688,6 @@ static void kcryptd_crypt_write_io_submit(struct dm_crypt_io *io,
BUG_ON(io->ctx.idx_out < clone->bi_vcnt);
clone->bi_sector = cc->start + io->sector;
io->sector += bio_sectors(clone);
if (async)
kcryptd_queue_io(io);
@ -703,13 +702,14 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
int crypt_finished;
unsigned out_of_pages = 0;
unsigned remaining = io->base_bio->bi_size;
sector_t sector = io->sector;
int r;
/*
* Prevent io from disappearing until this function completes.
*/
crypt_inc_pending(io);
crypt_convert_init(cc, &io->ctx, NULL, io->base_bio, io->sector);
crypt_convert_init(cc, &io->ctx, NULL, io->base_bio, sector);
/*
* The allocated buffers can be smaller than the whole bio,
@ -726,6 +726,7 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
io->ctx.idx_out = 0;
remaining -= clone->bi_size;
sector += bio_sectors(clone);
crypt_inc_pending(io);
r = crypt_convert(cc, &io->ctx);
@ -741,6 +742,8 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
*/
if (unlikely(r < 0))
break;
io->sector = sector;
}
/*