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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 05:04:00 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 05:04:00 -0300
commit273d4428f8c4cc94c9598f8bcc006ec2e8c654ea (patch)
treea453898167c5f6387e740a704a46b44b0a35b88a /drivers/md
parent863981e96738983919de841ec669e157e6bdaeb0 (diff)
Linux-libre 4.7.2-gnupck-4.7.2-gnu
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm-flakey.c23
-rw-r--r--drivers/md/dm-verity-fec.c4
-rw-r--r--drivers/md/dm.c16
3 files changed, 24 insertions, 19 deletions
diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
index b7341de87..4bb49cd60 100644
--- a/drivers/md/dm-flakey.c
+++ b/drivers/md/dm-flakey.c
@@ -289,10 +289,16 @@ static int flakey_map(struct dm_target *ti, struct bio *bio)
pb->bio_submitted = true;
/*
- * Map reads as normal.
+ * Map reads as normal only if corrupt_bio_byte set.
*/
- if (bio_data_dir(bio) == READ)
- goto map_bio;
+ if (bio_data_dir(bio) == READ) {
+ /* If flags were specified, only corrupt those that match. */
+ if (fc->corrupt_bio_byte && (fc->corrupt_bio_rw == READ) &&
+ all_corrupt_bio_flags_match(bio, fc))
+ goto map_bio;
+ else
+ return -EIO;
+ }
/*
* Drop writes?
@@ -330,12 +336,13 @@ static int flakey_end_io(struct dm_target *ti, struct bio *bio, int error)
/*
* Corrupt successful READs while in down state.
- * If flags were specified, only corrupt those that match.
*/
- if (fc->corrupt_bio_byte && !error && pb->bio_submitted &&
- (bio_data_dir(bio) == READ) && (fc->corrupt_bio_rw == READ) &&
- all_corrupt_bio_flags_match(bio, fc))
- corrupt_bio_data(bio, fc);
+ if (!error && pb->bio_submitted && (bio_data_dir(bio) == READ)) {
+ if (fc->corrupt_bio_byte)
+ corrupt_bio_data(bio, fc);
+ else
+ return -EIO;
+ }
return error;
}
diff --git a/drivers/md/dm-verity-fec.c b/drivers/md/dm-verity-fec.c
index 459a9f890..0f0eb8a3d 100644
--- a/drivers/md/dm-verity-fec.c
+++ b/drivers/md/dm-verity-fec.c
@@ -453,9 +453,7 @@ int verity_fec_decode(struct dm_verity *v, struct dm_verity_io *io,
*/
offset = block << v->data_dev_block_bits;
-
- res = offset;
- div64_u64(res, v->fec->rounds << v->data_dev_block_bits);
+ res = div64_u64(offset, v->fec->rounds << v->data_dev_block_bits);
/*
* The base RS block we can feed to the interleaver to find out all
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 1b2f96205..fd40bcb39 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2175,7 +2175,7 @@ static void dm_request_fn(struct request_queue *q)
md_in_flight(md) && rq->bio && rq->bio->bi_vcnt == 1 &&
md->last_rq_pos == pos && md->last_rq_rw == rq_data_dir(rq)) ||
(ti->type->busy && ti->type->busy(ti))) {
- blk_delay_queue(q, HZ / 100);
+ blk_delay_queue(q, 10);
return;
}
@@ -3128,7 +3128,8 @@ static void unlock_fs(struct mapped_device *md)
* Caller must hold md->suspend_lock
*/
static int __dm_suspend(struct mapped_device *md, struct dm_table *map,
- unsigned suspend_flags, int interruptible)
+ unsigned suspend_flags, int interruptible,
+ int dmf_suspended_flag)
{
bool do_lockfs = suspend_flags & DM_SUSPEND_LOCKFS_FLAG;
bool noflush = suspend_flags & DM_SUSPEND_NOFLUSH_FLAG;
@@ -3195,6 +3196,8 @@ static int __dm_suspend(struct mapped_device *md, struct dm_table *map,
* to finish.
*/
r = dm_wait_for_completion(md, interruptible);
+ if (!r)
+ set_bit(dmf_suspended_flag, &md->flags);
if (noflush)
clear_bit(DMF_NOFLUSH_SUSPENDING, &md->flags);
@@ -3256,12 +3259,10 @@ retry:
map = rcu_dereference_protected(md->map, lockdep_is_held(&md->suspend_lock));
- r = __dm_suspend(md, map, suspend_flags, TASK_INTERRUPTIBLE);
+ r = __dm_suspend(md, map, suspend_flags, TASK_INTERRUPTIBLE, DMF_SUSPENDED);
if (r)
goto out_unlock;
- set_bit(DMF_SUSPENDED, &md->flags);
-
dm_table_postsuspend_targets(map);
out_unlock:
@@ -3355,9 +3356,8 @@ static void __dm_internal_suspend(struct mapped_device *md, unsigned suspend_fla
* would require changing .presuspend to return an error -- avoid this
* until there is a need for more elaborate variants of internal suspend.
*/
- (void) __dm_suspend(md, map, suspend_flags, TASK_UNINTERRUPTIBLE);
-
- set_bit(DMF_SUSPENDED_INTERNALLY, &md->flags);
+ (void) __dm_suspend(md, map, suspend_flags, TASK_UNINTERRUPTIBLE,
+ DMF_SUSPENDED_INTERNALLY);
dm_table_postsuspend_targets(map);
}