From: Mike Marshall <hubcap@omnibond.com>
To: Christoph Hellwig <hch@lst.de>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Mike Marshall <hubcapsc@gmail.com>
Subject: Re: [PATCH 05/13] bdi: initialize ->ra_pages and ->io_pages in bdi_init
Date: Thu, 24 Sep 2020 11:24:19 -0400 [thread overview]
Message-ID: <CAOg9mSRzpLvydt=eN19z0=PjsLZpiTGO5VMB+nr_ZKTutsG+eA@mail.gmail.com> (raw)
In-Reply-To: <20200924065140.726436-6-hch@lst.de>
Since this patch set will affect orangefs, I was going to apply them to
Linux 5.9-rc6 and run my xfstests, but at least one of the patches
won't apply... I also tried Linux 5.9-rc3 since that's what the
bdi-cleanups branch in git.infradead.org/users/hch/block.git
is based on, but that won't go either...
I guess the patches depend upon some of the other patches
in block.git/bdi-cleanups?
I got the 13 patches with git-format-patch on block.git
rather than scraping them out of my gmail, I think they're
the same?
Anywho... was just going to try and add a helpful(?)
data point...
-Mike
On Thu, Sep 24, 2020 at 2:53 AM Christoph Hellwig <hch@lst.de> wrote:
>
> Set up a readahead size by default, as very few users have a good
> reason to change it. This means code, ecryptfs, and orangefs now
> set up the values while they were previously missing it, while ubifs,
> mtd and vboxsf manually set it to 0 to avoid readahead.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Jan Kara <jack@suse.cz>
> Acked-by: David Sterba <dsterba@suse.com> [btrfs]
> Acked-by: Richard Weinberger <richard@nod.at> [ubifs, mtd]
> ---
> block/blk-core.c | 2 --
> drivers/mtd/mtdcore.c | 2 ++
> fs/9p/vfs_super.c | 6 ++++--
> fs/afs/super.c | 1 -
> fs/btrfs/disk-io.c | 1 -
> fs/fuse/inode.c | 1 -
> fs/nfs/super.c | 9 +--------
> fs/ubifs/super.c | 2 ++
> fs/vboxsf/super.c | 2 ++
> mm/backing-dev.c | 2 ++
> 10 files changed, 13 insertions(+), 15 deletions(-)
>
> diff --git a/block/blk-core.c b/block/blk-core.c
> index ca3f0f00c9435f..865d39e5be2b28 100644
> --- a/block/blk-core.c
> +++ b/block/blk-core.c
> @@ -538,8 +538,6 @@ struct request_queue *blk_alloc_queue(int node_id)
> if (!q->stats)
> 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;
>
> diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
> index 7d930569a7dfb7..b5e5d3140f578e 100644
> --- a/drivers/mtd/mtdcore.c
> +++ b/drivers/mtd/mtdcore.c
> @@ -2196,6 +2196,8 @@ static struct backing_dev_info * __init mtd_bdi_init(char *name)
> bdi = bdi_alloc(NUMA_NO_NODE);
> if (!bdi)
> return ERR_PTR(-ENOMEM);
> + bdi->ra_pages = 0;
> + bdi->io_pages = 0;
>
> /*
> * We put '-0' suffix to the name to get the same name format as we
> diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
> index 74df32be4c6a52..e34fa20acf612e 100644
> --- a/fs/9p/vfs_super.c
> +++ b/fs/9p/vfs_super.c
> @@ -80,8 +80,10 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
> if (ret)
> return ret;
>
> - if (v9ses->cache)
> - sb->s_bdi->ra_pages = VM_READAHEAD_PAGES;
> + if (!v9ses->cache) {
> + sb->s_bdi->ra_pages = 0;
> + sb->s_bdi->io_pages = 0;
> + }
>
> sb->s_flags |= SB_ACTIVE | SB_DIRSYNC;
> if (!v9ses->cache)
> diff --git a/fs/afs/super.c b/fs/afs/super.c
> index b552357b1d1379..3a40ee752c1e3f 100644
> --- a/fs/afs/super.c
> +++ b/fs/afs/super.c
> @@ -456,7 +456,6 @@ static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx)
> ret = super_setup_bdi(sb);
> if (ret)
> return ret;
> - sb->s_bdi->ra_pages = VM_READAHEAD_PAGES;
>
> /* allocate the root inode and dentry */
> if (as->dyn_root) {
> diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
> index f6bba7eb1fa171..047934cea25efa 100644
> --- a/fs/btrfs/disk-io.c
> +++ b/fs/btrfs/disk-io.c
> @@ -3092,7 +3092,6 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
> }
>
> sb->s_bdi->capabilities |= BDI_CAP_CGROUP_WRITEBACK;
> - sb->s_bdi->ra_pages = VM_READAHEAD_PAGES;
> sb->s_bdi->ra_pages *= btrfs_super_num_devices(disk_super);
> sb->s_bdi->ra_pages = max(sb->s_bdi->ra_pages, SZ_4M / PAGE_SIZE);
>
> diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
> index bba747520e9b08..17b00670fb539e 100644
> --- a/fs/fuse/inode.c
> +++ b/fs/fuse/inode.c
> @@ -1049,7 +1049,6 @@ static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb)
> if (err)
> return err;
>
> - sb->s_bdi->ra_pages = VM_READAHEAD_PAGES;
> /* fuse does it's own writeback accounting */
> sb->s_bdi->capabilities = BDI_CAP_NO_ACCT_WB | BDI_CAP_STRICTLIMIT;
>
> diff --git a/fs/nfs/super.c b/fs/nfs/super.c
> index 7a70287f21a2c1..f943e37853fa25 100644
> --- a/fs/nfs/super.c
> +++ b/fs/nfs/super.c
> @@ -1200,13 +1200,6 @@ static void nfs_get_cache_cookie(struct super_block *sb,
> }
> #endif
>
> -static void nfs_set_readahead(struct backing_dev_info *bdi,
> - unsigned long iomax_pages)
> -{
> - bdi->ra_pages = VM_READAHEAD_PAGES;
> - bdi->io_pages = iomax_pages;
> -}
> -
> int nfs_get_tree_common(struct fs_context *fc)
> {
> struct nfs_fs_context *ctx = nfs_fc2context(fc);
> @@ -1251,7 +1244,7 @@ int nfs_get_tree_common(struct fs_context *fc)
> MINOR(server->s_dev));
> if (error)
> goto error_splat_super;
> - nfs_set_readahead(s->s_bdi, server->rpages);
> + s->s_bdi->io_pages = server->rpages;
> server->super = s;
> }
>
> diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
> index a2420c900275a8..fbddb2a1c03f5e 100644
> --- a/fs/ubifs/super.c
> +++ b/fs/ubifs/super.c
> @@ -2177,6 +2177,8 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
> c->vi.vol_id);
> if (err)
> goto out_close;
> + sb->s_bdi->ra_pages = 0;
> + sb->s_bdi->io_pages = 0;
>
> sb->s_fs_info = c;
> sb->s_magic = UBIFS_SUPER_MAGIC;
> diff --git a/fs/vboxsf/super.c b/fs/vboxsf/super.c
> index 8fe03b4a0d2b03..8e3792177a8523 100644
> --- a/fs/vboxsf/super.c
> +++ b/fs/vboxsf/super.c
> @@ -167,6 +167,8 @@ static int vboxsf_fill_super(struct super_block *sb, struct fs_context *fc)
> err = super_setup_bdi_name(sb, "vboxsf-%d", sbi->bdi_id);
> if (err)
> goto fail_free;
> + sb->s_bdi->ra_pages = 0;
> + sb->s_bdi->io_pages = 0;
>
> /* Turn source into a shfl_string and map the folder */
> size = strlen(fc->source) + 1;
> diff --git a/mm/backing-dev.c b/mm/backing-dev.c
> index 8e8b00627bb2d8..2dac3be6127127 100644
> --- a/mm/backing-dev.c
> +++ b/mm/backing-dev.c
> @@ -746,6 +746,8 @@ struct backing_dev_info *bdi_alloc(int node_id)
> kfree(bdi);
> return NULL;
> }
> + bdi->ra_pages = VM_READAHEAD_PAGES;
> + bdi->io_pages = VM_READAHEAD_PAGES;
> return bdi;
> }
> EXPORT_SYMBOL(bdi_alloc);
> --
> 2.28.0
>
next prev parent reply other threads:[~2020-09-24 15:24 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-24 6:51 bdi cleanups v7 Christoph Hellwig
2020-09-24 6:51 ` [PATCH 01/13] fs: remove the unused SB_I_MULTIROOT flag Christoph Hellwig
2020-09-24 6:51 ` [PATCH 02/13] drbd: remove dead code in device_to_statistics Christoph Hellwig
2020-09-24 6:51 ` [PATCH 03/13] bcache: inherit the optimal I/O size Christoph Hellwig
2020-09-24 15:49 ` Martin K. Petersen
2020-09-24 6:51 ` [PATCH 04/13] aoe: set an " Christoph Hellwig
2020-09-24 15:51 ` Martin K. Petersen
2020-09-24 6:51 ` [PATCH 05/13] bdi: initialize ->ra_pages and ->io_pages in bdi_init Christoph Hellwig
2020-09-24 15:24 ` Mike Marshall [this message]
2020-09-24 6:51 ` [PATCH 06/13] md: update the optimal I/O size on reshape Christoph Hellwig
2020-09-24 15:53 ` Martin K. Petersen
2020-09-24 6:51 ` [PATCH 07/13] block: lift setting the readahead size into the block layer Christoph Hellwig
2020-09-24 14:53 ` Jan Kara
2020-09-24 15:03 ` Mike Snitzer
2020-09-24 15:57 ` Martin K. Petersen
2020-09-24 6:51 ` [PATCH 08/13] bdi: remove BDI_CAP_CGROUP_WRITEBACK Christoph Hellwig
2020-09-24 6:51 ` [PATCH 09/13] bdi: remove BDI_CAP_SYNCHRONOUS_IO Christoph Hellwig
2020-09-24 6:51 ` [PATCH 10/13] mm: use SWP_SYNCHRONOUS_IO more intelligently Christoph Hellwig
2020-09-24 6:51 ` [PATCH 11/13] bdi: replace BDI_CAP_STABLE_WRITES with a queue and a sb flag Christoph Hellwig
2020-09-24 6:51 ` [PATCH 12/13] bdi: invert BDI_CAP_NO_ACCT_WB Christoph Hellwig
2020-09-24 6:51 ` [PATCH 13/13] bdi: replace BDI_CAP_NO_{WRITEBACK,ACCT_DIRTY} with a single flag Christoph Hellwig
2020-09-24 19:44 ` bdi cleanups v7 Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2020-09-21 8:07 bdi cleanups v6 Christoph Hellwig
2020-09-21 8:07 ` [PATCH 05/13] bdi: initialize ->ra_pages and ->io_pages in bdi_init Christoph Hellwig
2020-09-22 8:49 ` Jan Kara
2020-09-23 15:16 ` Christoph Hellwig
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