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From: Matthew Wilcox <willy@infradead.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>, Song Liu <song@kernel.org>,
	Jaegeuk Kim <jaegeuk@kernel.org>, Chao Yu <chao@kernel.org>,
	Philipp Reisner <philipp.reisner@linbit.com>,
	Lars Ellenberg <lars.ellenberg@linbit.com>,
	Coly Li <colyli@suse.de>, Mike Snitzer <snitzer@redhat.com>,
	Josef Bacik <josef@toxicpanda.com>,
	David Sterba <dsterba@suse.com>,
	Damien Le Moal <damien.lemoal@wdc.com>,
	Naohiro Aota <naohiro.aota@wdc.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Ryusuke Konishi <konishi.ryusuke@gmail.com>,
	linux-nilfs@vger.kernel.org, dm-devel@redhat.com,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-block@vger.kernel.org, drbd-dev@lists.linbit.com,
	linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org,
	linux-nfs@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 04/17] block: split bio_kmalloc from bio_alloc_bioset
Date: Sat, 30 Jan 2021 03:56:46 +0000
Message-ID: <20210130035646.GH308988@casper.infradead.org> (raw)
In-Reply-To: <20210126145247.1964410-5-hch@lst.de>

On Tue, Jan 26, 2021 at 03:52:34PM +0100, Christoph Hellwig wrote:
> bio_kmalloc shares almost no logic with the bio_set based fast path
> in bio_alloc_bioset.  Split it into an entirely separate implementation.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>  block/bio.c         | 167 ++++++++++++++++++++++----------------------
>  include/linux/bio.h |   6 +-
>  2 files changed, 86 insertions(+), 87 deletions(-)

This patch causes current linux-next to OOM for me when running xfstests
after about ten minutes.  Haven't looked into why yet, this is just the
results of a git bisect.

The qemu command line is:

qemu-system-x86_64 -nodefaults -nographic -cpu host -machine accel=kvm,nvdimm -m 2G,slots=8,maxmem=1T -smp 6 -kernel /home/willy/kernel/folio/.build_test_kernel-x86_64/kpgk/vmlinuz -append console=hvc0 root=/dev/sda rw log_buf_len=8M ktest.dir=/home/willy/kernel/ktest ktest.env=/tmp/build-test-kernel-nJO6QgxOmo/env quiet systemd.show_status=0 systemd.log-target=journal crashkernel=128M no_console_suspend -device virtio-serial -chardev stdio,id=console -device virtconsole,chardev=console -serial unix:/tmp/build-test-kernel-nJO6QgxOmo/vm-kgdb,server,nowait -monitor unix:/tmp/build-test-kernel-nJO6QgxOmo/vm-mon,server,nowait -gdb unix:/tmp/build-test-kernel-nJO6QgxOmo/vm-gdb,server,nowait -device virtio-rng-pci -virtfs local,path=/,mount_tag=host,security_model=none -device virtio-scsi-pci,id=hba -nic user,model=virtio,hostfwd=tcp:127.0.0.1:24674-:22 -drive if=none,format=raw,id=disk0,file=/var/lib/ktest/root.amd64,snapshot=on -device scsi-hd,bus=hba.0,drive=disk0 -drive if=none,format=raw,id=disk1,file=/tmp/build-test-kernel-nJO6QgxOmo/dev-1,cache=unsafe -device scsi-hd,bus=hba.0,drive=disk1 -drive if=none,format=raw,id=disk2,file=/tmp/build-test-kernel-nJO6QgxOmo/dev-2,cache=unsafe -device scsi-hd,bus=hba.0,drive=disk2 -drive if=none,format=raw,id=disk3,file=/tmp/build-test-kernel-nJO6QgxOmo/dev-3,cache=unsafe -device scsi-hd,bus=hba.0,drive=disk3


  reply index

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-26 14:52 misc bio allocation cleanups Christoph Hellwig
2021-01-26 14:52 ` [PATCH 01/17] zonefs: use bio_alloc in zonefs_file_dio_append Christoph Hellwig
2021-01-26 15:08   ` Johannes Thumshirn
2021-01-26 19:09   ` Chaitanya Kulkarni
2021-01-26 23:23   ` [dm-devel] " Damien Le Moal
2021-01-26 14:52 ` [PATCH 02/17] btrfs: use bio_kmalloc in __alloc_device Christoph Hellwig
2021-01-26 15:01   ` Josef Bacik
2021-01-26 19:11   ` Chaitanya Kulkarni
2021-01-26 14:52 ` [PATCH 03/17] blk-crypto: use bio_kmalloc in blk_crypto_clone_bio Christoph Hellwig
2021-01-26 21:51   ` Eric Biggers
2021-01-26 14:52 ` [PATCH 04/17] block: split bio_kmalloc from bio_alloc_bioset Christoph Hellwig
2021-01-30  3:56   ` Matthew Wilcox [this message]
2021-02-01 12:22     ` Christoph Hellwig
2021-01-26 14:52 ` [PATCH 05/17] block: use an on-stack bio in blkdev_issue_flush Christoph Hellwig
2021-01-26 19:15   ` Chaitanya Kulkarni
2021-01-26 14:52 ` [PATCH 06/17] dm-clone: use blkdev_issue_flush in commit_metadata Christoph Hellwig
2021-01-26 14:52 ` [PATCH 07/17] f2fs: use blkdev_issue_flush in __submit_flush_wait Christoph Hellwig
2021-01-29  1:03   ` [f2fs-dev] " Chao Yu
2021-01-26 14:52 ` [PATCH 08/17] f2fs: remove FAULT_ALLOC_BIO Christoph Hellwig
2021-01-28 16:11   ` Jaegeuk Kim
2021-01-29  1:04   ` [f2fs-dev] " Chao Yu
2021-01-26 14:52 ` [PATCH 09/17] drbd: remove bio_alloc_drbd Christoph Hellwig
2021-01-26 14:52 ` [PATCH 10/17] drbd: remove drbd_req_make_private_bio Christoph Hellwig
2021-01-26 14:52 ` [PATCH 11/17] md: remove bio_alloc_mddev Christoph Hellwig
2021-01-27  7:21   ` Song Liu
2021-01-26 14:52 ` [PATCH 12/17] md: simplify sync_page_io Christoph Hellwig
2021-01-27  7:22   ` Song Liu
2021-01-26 14:52 ` [PATCH 13/17] md: remove md_bio_alloc_sync Christoph Hellwig
2021-01-27  7:22   ` Song Liu
2021-01-26 14:52 ` [PATCH 14/17] md/raid6: refactor raid5_read_one_chunk Christoph Hellwig
2021-01-27  7:15   ` Song Liu
2021-01-26 14:52 ` [PATCH 15/17] nfs/blocklayout: remove cruft in bl_alloc_init_bio Christoph Hellwig
2021-01-26 14:52 ` [PATCH 16/17] nilfs2: remove cruft in nilfs_alloc_seg_bio Christoph Hellwig
2021-01-26 19:17   ` Chaitanya Kulkarni
2021-01-26 14:52 ` [PATCH 17/17] mm: remove get_swap_bio Christoph Hellwig
2021-01-27 16:52 ` misc bio allocation cleanups Jens Axboe
2021-02-01  1:16 ` Guoqing Jiang

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