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authorDavid Woodhouse <David.Woodhouse@intel.com>2008-08-09 16:22:17 +0100
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:01 +0200
commitd628eaef310533767ce68664873869c2d7f78f09 (patch)
tree12d6a9e6db000d89deb7ab01d55d2e7b9e6f42c5 /include
parent36144077bce9f89763ce994bc631cbd1c9db7785 (diff)
downloadlwn-d628eaef310533767ce68664873869c2d7f78f09.tar.gz
lwn-d628eaef310533767ce68664873869c2d7f78f09.zip
Fix up comments about matching flags between bio and rq
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/bio.h4
-rw-r--r--include/linux/blkdev.h2
2 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index dbeb66f813ab..17f1fbdb31bf 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -150,8 +150,8 @@ struct bio {
* bit 3 -- fail fast, don't want low level driver retries
* bit 4 -- synchronous I/O hint: the block layer will unplug immediately
*/
-#define BIO_RW 0
-#define BIO_RW_AHEAD 1
+#define BIO_RW 0 /* Must match RW in req flags (blkdev.h) */
+#define BIO_RW_AHEAD 1 /* Must match FAILFAST in req flags */
#define BIO_RW_BARRIER 2
#define BIO_RW_FAILFAST 3
#define BIO_RW_SYNC 4
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 53ea933cf60b..e0ba018f5e88 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -84,7 +84,7 @@ enum {
};
/*
- * request type modified bits. first three bits match BIO_RW* bits, important
+ * request type modified bits. first two bits match BIO_RW* bits, important
*/
enum rq_flag_bits {
__REQ_RW, /* not set, read. set, write */