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md: use TASK_IDLE instead of blocking signals

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Hi - I submit this patch for the next merge window:

Some times ago, I made a patch f9c79bc05a that blocks signals around the
schedule() calls in MD. The MD subsystem needs to do an uninterruptible
sleep that is not accounted in load average - so we block signals and use
interruptible sleep.

The kernel has a special TASK_IDLE state for this purpose, so we can use
it instead of blocking signals. This patch doesn't fix any bug, it just
makes the code simpler.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
Mikulas Patocka
2017-10-18 19:01:11 -04:00
committed by Shaohua Li
parent b03e0ccb5a
commit ae89fd3de4
2 changed files with 1 additions and 7 deletions
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drivers/md/raid5.c
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@@ -55,7 +55,6 @@
#include <linux/ratelimit.h>
#include <linux/nodemask.h>
#include <linux/flex_array.h>
#include <linux/sched/signal.h>
#include <trace/events/block.h>
#include <linux/list_sort.h>