summaryrefslogtreecommitdiffstats
path: root/include/linux/bio.h
diff options
context:
space:
mode:
authorJens Axboe <jens.axboe@oracle.com>2009-01-06 09:21:49 +0100
committerJens Axboe <jens.axboe@oracle.com>2009-01-30 12:34:37 +0100
commit1dfa17f4ab8543d82caf4d36636b93916a18f456 (patch)
treebce24202f9f4d9b0d82cd5303dcfa5ccf4dc6886 /include/linux/bio.h
parent213d9417fec62ef4c3675621b9364a667954d4dd (diff)
block: add bio_rw_flagged() for testing bio->bi_rw
The existing functions for checking bio->bi_rw are badly named. So lets mirror what we do for bio->bi_flags testing, use a properly named function so that it's immediately obvious what is being tested. Maintain compatability names for the old macros, eventually we'll get rid of these. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/bio.h')
-rw-r--r--include/linux/bio.h28
1 files changed, 18 insertions, 10 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index f53568c5852..0942765cf8c 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -173,6 +173,24 @@ struct bio {
#define BIO_RW_SYNC (BIO_RW_SYNCIO | BIO_RW_UNPLUG)
+#define bio_rw_flagged(bio, flag) ((bio)->bi_rw & (1 << (flag)))
+
+/*
+ * Old defines, these should eventually be replaced by direct usage of
+ * bio_rw_flagged()
+ */
+#define bio_barrier(bio) bio_rw_flagged(bio, BIO_RW_BARRIER)
+#define bio_sync(bio) bio_rw_flagged(bio, BIO_RW_SYNCIO)
+#define bio_unplug(bio) bio_rw_flagged(bio, BIO_RW_UNPLUG)
+#define bio_failfast_dev(bio) bio_rw_flagged(bio, BIO_RW_FAILFAST_DEV)
+#define bio_failfast_transport(bio) \
+ bio_rw_flagged(bio, BIO_RW_FAILFAST_TRANSPORT)
+#define bio_failfast_driver(bio) \
+ bio_rw_flagged(bio, BIO_RW_FAILFAST_DRIVER)
+#define bio_rw_ahead(bio) bio_rw_flagged(bio, BIO_RW_AHEAD)
+#define bio_rw_meta(bio) bio_rw_flagged(bio, BIO_RW_META)
+#define bio_discard(bio) bio_rw_flagged(bio, BIO_RW_DISCARD)
+
/*
* upper 16 bits of bi_rw define the io priority of this bio
*/
@@ -196,16 +214,6 @@ struct bio {
#define bio_offset(bio) bio_iovec((bio))->bv_offset
#define bio_segments(bio) ((bio)->bi_vcnt - (bio)->bi_idx)
#define bio_sectors(bio) ((bio)->bi_size >> 9)
-#define bio_barrier(bio) ((bio)->bi_rw & (1 << BIO_RW_BARRIER))
-#define bio_sync(bio) ((bio)->bi_rw & (1 << BIO_RW_SYNCIO))
-#define bio_unplug(bio) ((bio)->bi_rw & (1 << BIO_RW_UNPLUG))
-#define bio_failfast_dev(bio) ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_DEV))
-#define bio_failfast_transport(bio) \
- ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_TRANSPORT))
-#define bio_failfast_driver(bio) ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_DRIVER))
-#define bio_rw_ahead(bio) ((bio)->bi_rw & (1 << BIO_RW_AHEAD))
-#define bio_rw_meta(bio) ((bio)->bi_rw & (1 << BIO_RW_META))
-#define bio_discard(bio) ((bio)->bi_rw & (1 << BIO_RW_DISCARD))
#define bio_empty_barrier(bio) (bio_barrier(bio) && !bio_has_data(bio) && !bio_discard(bio))
static inline unsigned int bio_cur_sectors(struct bio *bio)