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| author | Jens Axboe <axboe@kernel.dk> | 2020-08-31 20:20:02 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-12 14:39:11 +0300 |
| commit | 9b45c01364448d37e87dbb02ae5599cd32f29b46 (patch) | |
| tree | 03b29811d285c11710af53731445019c2b3b214d /block | |
| parent | d0ebd34bbf38b44b977eecb3e6da09741675de76 (diff) | |
| download | linux-9b45c01364448d37e87dbb02ae5599cd32f29b46.tar.xz | |
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>
Diffstat (limited to 'block')
| -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 4e04c79aa2c2..2407c898ba7d 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -852,6 +852,8 @@ 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; |