The patch titled
as-iosched: fix write batch start point
has been removed from the -mm tree. Its filename was
as-iosched-fix-write-batch-start-point.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: as-iosched: fix write batch start point
From: Aaron Carroll <aaronc@xxxxxxxxxxxxxxxxxx>
New write batches currently start from where the last one completed. We
have no idea where the head is after switching batches, so this makes
little sense. Instead, start the next batch from the request with the
earliest deadline in the hope that we avoid a deadline expiry later on.
Signed-off-by: Aaron Carroll <aaronc@xxxxxxxxxxxxxxxxxx>
Acked-by: Nick Piggin <npiggin@xxxxxxx>
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
block/as-iosched.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN block/as-iosched.c~as-iosched-fix-write-batch-start-point block/as-iosched.c
--- a/block/as-iosched.c~as-iosched-fix-write-batch-start-point
+++ a/block/as-iosched.c
@@ -1097,7 +1097,8 @@ dispatch_writes:
ad->batch_data_dir = REQ_ASYNC;
ad->current_write_count = ad->write_batch_count;
ad->write_batch_idled = 0;
- rq = ad->next_rq[ad->batch_data_dir];
+ rq = rq_entry_fifo(ad->fifo_list[REQ_ASYNC].next);
+ ad->last_check_fifo[REQ_ASYNC] = jiffies;
goto dispatch_request;
}
_
Patches currently in -mm which might be from aaronc@xxxxxxxxxxxxxxxxxx are
git-block.patch
-
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