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| author | Nathan Scott <nathans@sgi.com> | 2006-07-06 10:03:28 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@suse.de> | 2006-07-06 10:03:28 +0200 |
| commit | 40359ccb836866435b03a0cb57345002b587d875 (patch) | |
| tree | 4e0530a7759ba9802658901432a89683fbb0965d /include/linux/blktrace_api.h | |
| parent | fc0a75ce4835187a3f76d6b35f0644d1b168eef5 (diff) | |
| download | lwn-40359ccb836866435b03a0cb57345002b587d875.tar.gz lwn-40359ccb836866435b03a0cb57345002b587d875.zip | |
[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/blktrace_api.h')
| -rw-r--r-- | include/linux/blktrace_api.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index d95615fc6da5..2346a1db8561 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 */ }; |