[dm-devel] [PATCH] dm: log-writes: record metadata flag for better flags record
Qu Wenruo
wqu at suse.com
Wed Feb 28 07:32:47 UTC 2018
So developer could distinguish data and metadata bios easier.
Signed-off-by: Qu Wenruo <wqu at suse.com>
---
drivers/md/dm-log-writes.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index 189badbeddaf..c7f4a592d14d 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -52,10 +52,11 @@
* in fact we want to do the data and the discard in the order that they
* completed.
*/
-#define LOG_FLUSH_FLAG (1 << 0)
-#define LOG_FUA_FLAG (1 << 1)
-#define LOG_DISCARD_FLAG (1 << 2)
-#define LOG_MARK_FLAG (1 << 3)
+#define LOG_FLUSH_FLAG (1 << 0)
+#define LOG_FUA_FLAG (1 << 1)
+#define LOG_DISCARD_FLAG (1 << 2)
+#define LOG_MARK_FLAG (1 << 3)
+#define LOG_METADATA_FLAG (1 << 4)
#define WRITE_LOG_VERSION 1ULL
#define WRITE_LOG_MAGIC 0x6a736677736872ULL
@@ -699,6 +700,7 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
bool flush_bio = (bio->bi_opf & REQ_PREFLUSH);
bool fua_bio = (bio->bi_opf & REQ_FUA);
bool discard_bio = (bio_op(bio) == REQ_OP_DISCARD);
+ bool meta_bio = (bio->bi_opf & REQ_META);
pb->block = NULL;
@@ -743,6 +745,8 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
block->flags |= LOG_FUA_FLAG;
if (discard_bio)
block->flags |= LOG_DISCARD_FLAG;
+ if (meta_bio)
+ block->flags |= LOG_METADATA_FLAG;
block->sector = bio_to_dev_sectors(lc, bio->bi_iter.bi_sector);
block->nr_sectors = bio_to_dev_sectors(lc, bio_sectors(bio));
--
2.16.2
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