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authorJens Axboe <axboe@suse.de>2005-06-27 10:55:12 +0200
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-27 14:33:29 -0700
commit22e2c507c301c3dbbcf91b4948b88f78842ee6c9 (patch)
tree9a97c91d1362e69703aa286021daffb8a5456f4c /include/linux/writeback.h
parent020f46a39eb7b99a575b9f4d105fce2b142acdf1 (diff)
[PATCH] Update cfq io scheduler to time sliced design
This updates the CFQ io scheduler to the new time sliced design (cfq v3). It provides full process fairness, while giving excellent aggregate system throughput even for many competing processes. It supports io priorities, either inherited from the cpu nice value or set directly with the ioprio_get/set syscalls. The latter closely mimic set/getpriority. This import is based on my latest from -mm. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/writeback.h')
-rw-r--r--include/linux/writeback.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 1262cb43c3a..d5c3fe1bf33 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -14,11 +14,13 @@ extern struct list_head inode_unused;
* Yes, writeback.h requires sched.h
* No, sched.h is not included from here.
*/
-static inline int current_is_pdflush(void)
+static inline int task_is_pdflush(struct task_struct *task)
{
- return current->flags & PF_FLUSHER;
+ return task->flags & PF_FLUSHER;
}
+#define current_is_pdflush() task_is_pdflush(current)
+
/*
* fs/fs-writeback.c
*/