diff options
| author | Philip J Kelleher <pjk1939@linux.vnet.ibm.com> | 2013-06-18 14:36:26 -0500 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-06-19 13:52:09 +0200 |
| commit | 0ab4743ebc18c23bddf3e288cfc6221ec71533ac (patch) | |
| tree | 0977d5fe4a55f914e3bc9e2f4a7847ff555d5417 /drivers/block/rsxx/dev.c | |
| parent | a3299ab18591d36ad5622f5064619123c439b779 (diff) | |
| download | blackbird-op-linux-0ab4743ebc18c23bddf3e288cfc6221ec71533ac.tar.gz blackbird-op-linux-0ab4743ebc18c23bddf3e288cfc6221ec71533ac.zip | |
rsxx: Restructured DMA cancel scheme.
Before, DMAs would never be cancelled if there was a data stall
or an EEH Permenant failure which would cause an unrecoverable
I/O hang.
The DMA cancellation mechanism has been modified to fix
these issues and allows DMAs to be cancelled during the
above mentioned events.
Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/rsxx/dev.c')
| -rw-r--r-- | drivers/block/rsxx/dev.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/block/rsxx/dev.c b/drivers/block/rsxx/dev.c index 4346d17d2949..604ad2dafa43 100644 --- a/drivers/block/rsxx/dev.c +++ b/drivers/block/rsxx/dev.c @@ -155,7 +155,8 @@ static void bio_dma_done_cb(struct rsxx_cardinfo *card, atomic_set(&meta->error, 1); if (atomic_dec_and_test(&meta->pending_dmas)) { - disk_stats_complete(card, meta->bio, meta->start_time); + if (!card->eeh_state && card->gendisk) + disk_stats_complete(card, meta->bio, meta->start_time); bio_endio(meta->bio, atomic_read(&meta->error) ? -EIO : 0); kmem_cache_free(bio_meta_pool, meta); @@ -196,7 +197,8 @@ static void rsxx_make_request(struct request_queue *q, struct bio *bio) atomic_set(&bio_meta->pending_dmas, 0); bio_meta->start_time = jiffies; - disk_stats_start(card, bio); + if (!unlikely(card->halt)) + disk_stats_start(card, bio); dev_dbg(CARD_TO_DEV(card), "BIO[%c]: meta: %p addr8: x%llx size: %d\n", bio_data_dir(bio) ? 'W' : 'R', bio_meta, |
