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authorJens Axboe <axboe@kernel.dk>2020-08-31 20:20:02 +0300
committerJens Axboe <axboe@kernel.dk>2020-09-01 17:00:14 +0300
commitde1b0ee490eafdf65fac9eef9925391a8369f2dc (patch)
tree3fe4baf216fe5501b96d995b5d3b9603a2d1ec7e /block/blk-core.c
parent5d220bcd378a1de14b9609c2706e041ba62253b6 (diff)
downloadlinux-de1b0ee490eafdf65fac9eef9925391a8369f2dc.tar.xz
block: ensure bdi->io_pages is always initialized
If a driver leaves the limit settings as the defaults, then we don't initialize bdi->io_pages. This means that file systems may need to work around bdi->io_pages == 0, which is somewhat messy. Initialize the default value just like we do for ->ra_pages. Cc: stable@vger.kernel.org Fixes: 9491ae4aade6 ("mm: don't cap request size based on read-ahead setting") Reported-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
-rw-r--r--block/blk-core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index d9d632639bd1..10c08ac50697 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -539,6 +539,7 @@ struct request_queue *blk_alloc_queue(int node_id)
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;