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authorNathan Scott <nathans@sgi.com>2006-07-06 10:03:28 +0200
committerJens Axboe <axboe@suse.de>2006-07-06 10:03:28 +0200
commit40359ccb836866435b03a0cb57345002b587d875 (patch)
tree4e0530a7759ba9802658901432a89683fbb0965d /include/linux
parentfc0a75ce4835187a3f76d6b35f0644d1b168eef5 (diff)
downloadop-kernel-dev-40359ccb836866435b03a0cb57345002b587d875.zip
op-kernel-dev-40359ccb836866435b03a0cb57345002b587d875.tar.gz
[PATCH] blktrace: readahead support
Provide the needed kernel support for distinguishing readahead from regular read requests when tracing block devices. Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/blktrace_api.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index d95615f..2346a1d 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -19,6 +19,7 @@ enum blktrace_cat {
BLK_TC_FS = 1 << 8, /* fs requests */
BLK_TC_PC = 1 << 9, /* pc requests */
BLK_TC_NOTIFY = 1 << 10, /* special message */
+ BLK_TC_AHEAD = 1 << 11, /* readahead */
BLK_TC_END = 1 << 15, /* only 16-bits, reminder */
};
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