diff options
author | David Woodhouse <David.Woodhouse@intel.com> | 2010-10-30 12:35:11 +0100 |
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committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-10-30 12:35:11 +0100 |
commit | 67577927e8d7a1f4b09b4992df640eadc6aacb36 (patch) | |
tree | 2e9efe6b5745965faf0dcc084d4613d9356263f9 /drivers/md/dm-io.c | |
parent | 6fe4c590313133ebd5dadb769031489ff178ece1 (diff) | |
parent | 51f00a471ce8f359627dd99aeac322947a0e491b (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Conflicts:
drivers/mtd/mtd_blkdevs.c
Merge Grant's device-tree bits so that we can apply the subsequent fixes.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/md/dm-io.c')
-rw-r--r-- | drivers/md/dm-io.c | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c index 0590c75b0ab..136d4f71a11 100644 --- a/drivers/md/dm-io.c +++ b/drivers/md/dm-io.c @@ -31,7 +31,6 @@ struct dm_io_client { */ struct io { unsigned long error_bits; - unsigned long eopnotsupp_bits; atomic_t count; struct task_struct *sleeper; struct dm_io_client *client; @@ -130,11 +129,8 @@ static void retrieve_io_and_region_from_bio(struct bio *bio, struct io **io, *---------------------------------------------------------------*/ static void dec_count(struct io *io, unsigned int region, int error) { - if (error) { + if (error) set_bit(region, &io->error_bits); - if (error == -EOPNOTSUPP) - set_bit(region, &io->eopnotsupp_bits); - } if (atomic_dec_and_test(&io->count)) { if (io->sleeper) @@ -310,8 +306,8 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where, sector_t remaining = where->count; /* - * where->count may be zero if rw holds a write barrier and we - * need to send a zero-sized barrier. + * where->count may be zero if rw holds a flush and we need to + * send a zero-sized flush. */ do { /* @@ -364,7 +360,7 @@ static void dispatch_io(int rw, unsigned int num_regions, */ for (i = 0; i < num_regions; i++) { *dp = old_pages; - if (where[i].count || (rw & REQ_HARDBARRIER)) + if (where[i].count || (rw & REQ_FLUSH)) do_region(rw, i, where + i, dp, io); } @@ -393,9 +389,7 @@ static int sync_io(struct dm_io_client *client, unsigned int num_regions, return -EIO; } -retry: io->error_bits = 0; - io->eopnotsupp_bits = 0; atomic_set(&io->count, 1); /* see dispatch_io() */ io->sleeper = current; io->client = client; @@ -412,11 +406,6 @@ retry: } set_current_state(TASK_RUNNING); - if (io->eopnotsupp_bits && (rw & REQ_HARDBARRIER)) { - rw &= ~REQ_HARDBARRIER; - goto retry; - } - if (error_bits) *error_bits = io->error_bits; @@ -437,7 +426,6 @@ static int async_io(struct dm_io_client *client, unsigned int num_regions, io = mempool_alloc(client->pool, GFP_NOIO); io->error_bits = 0; - io->eopnotsupp_bits = 0; atomic_set(&io->count, 1); /* see dispatch_io() */ io->sleeper = NULL; io->client = client; |