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authorMike Snitzer <snitzer@redhat.com>2012-07-27 18:07:57 +0400
committerAlasdair G Kergon <agk@redhat.com>2012-07-27 18:07:57 +0400
commit17b7d63f7ed10376e762fdfadbc65da6687d569a (patch)
tree5de13953644dab7ca76b0b924558503f0c8a7860 /drivers
parent7768ed33ccdc02801c4483fc5682dc66ace14aea (diff)
downloadlinux-17b7d63f7ed10376e762fdfadbc65da6687d569a.tar.xz
dm thin: clean up compiler warning
Clean up "warning: dubious: !x & y". Also make it clear that __snapshotted_since() returns a bool and that dm_thin_lookup_result's 'shared' member is a flag. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/md/dm-thin-metadata.c2
-rw-r--r--drivers/md/dm-thin-metadata.h2
-rw-r--r--drivers/md/dm-thin.c2
3 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 3e2907f0bc46..c858931d2dcb 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -1262,7 +1262,7 @@ dm_thin_id dm_thin_dev_id(struct dm_thin_device *td)
return td->id;
}
-static int __snapshotted_since(struct dm_thin_device *td, uint32_t time)
+static bool __snapshotted_since(struct dm_thin_device *td, uint32_t time)
{
return td->snapshotted_time > time;
}
diff --git a/drivers/md/dm-thin-metadata.h b/drivers/md/dm-thin-metadata.h
index b88918ccdaf6..7b47c0a9a8e3 100644
--- a/drivers/md/dm-thin-metadata.h
+++ b/drivers/md/dm-thin-metadata.h
@@ -119,7 +119,7 @@ dm_thin_id dm_thin_dev_id(struct dm_thin_device *td);
struct dm_thin_lookup_result {
dm_block_t block;
- int shared;
+ unsigned shared:1;
};
/*
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 18f87b0def12..0bb9e646e215 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -1218,7 +1218,7 @@ static void process_discard(struct thin_c *tc, struct bio *bio)
*/
m = get_next_mapping(pool);
m->tc = tc;
- m->pass_discard = (!lookup_result.shared) & pool->pf.discard_passdown;
+ m->pass_discard = (!lookup_result.shared) && pool->pf.discard_passdown;
m->virt_block = block;
m->data_block = lookup_result.block;
m->cell = cell;