* [PATCH] block: Set default value to bdi->io_pages instead of zero
@ 2020-08-30 1:04 OGAWA Hirofumi
0 siblings, 0 replies; only message in thread
From: OGAWA Hirofumi @ 2020-08-30 1:04 UTC (permalink / raw)
To: Jens Axboe; +Cc: linux-kernel
This may not enough to guarantee ->io_pages is not zero though,
instead of leaving ->io_pages as zero, this initializing ->io_pages to
sane value. (maybe some part of NVMe driver seems to be)
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
---
block/blk-core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/block/blk-core.c b/block/blk-core.c
index 03252af..619a3dc 100644
--- a/block/blk-core.c 2020-08-30 06:47:21.221530450 +0900
+++ b/block/blk-core.c 2020-08-30 06:48:05.805875540 +0900
@@ -526,6 +526,7 @@ struct request_queue *__blk_alloc_queue(
goto fail_stats;
q->backing_dev_info->ra_pages = VM_READAHEAD_PAGES;
+ q->backing_dev_info->io_pages = VM_READAHEAD_PAGES;
q->backing_dev_info->capabilities = BDI_CAP_CGROUP_WRITEBACK;
q->node = node_id;
_
--
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
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