tree 56676e59075c4533b751a9c9c3296bed5958c792
parent eb32baec15c38ae6f06cb898a9f791578c5f8c79
author Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> 1248764194 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1248764194 +0200

mg_disk: fix issue with data integrity on error in mg_write()

We cannot acknowledge the sector write before checking its status
(which is done on the next loop iteration) and we also need to do
the final status register check after writing the last sector.

Fix mg_write() to match mg_write_intr() in this regard.

While at it:
- add mg_read_one() and mg_write_one() helpers
- always use MG_SECTOR_SIZE and remove MG_STORAGE_BUFFER_SIZE

[bart: thanks to Tejun for porting the patch over recent block changes]

Cc: unsik Kim <donari75@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

===================================================================
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>