diff options
| author | Jens Axboe <axboe@kernel.dk> | 2020-08-31 11:20:02 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-12 13:40:22 +0200 |
| commit | 732fd460bb72fd51607311009b7d474a6e0e47f3 (patch) | |
| tree | c110d67f44550b80adcb2893b6e5a71c0d61c1da | |
| parent | 9244e838ac0d3d98887d44ea68bedf08a94ebabf (diff) | |
block: ensure bdi->io_pages is always initialized
[ Upstream commit de1b0ee490eafdf65fac9eef9925391a8369f2dc ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | block/blk-core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index ea33d6abdcfc..ce3710404544 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1036,6 +1036,8 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id, q->backing_dev_info->ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_SIZE; + q->backing_dev_info->io_pages = + (VM_MAX_READAHEAD * 1024) / PAGE_SIZE; q->backing_dev_info->capabilities = BDI_CAP_CGROUP_WRITEBACK; q->backing_dev_info->name = "block"; q->node = node_id; |