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From: Johannes Thumshirn <johannes.thumshirn@wdc.com>
To: Damien Le Moal <dlemoal@kernel.org>,
	 Naohiro Aota <naohiro.aota@wdc.com>,
	Johannes Thumshirn <jth@kernel.org>,
	 Alasdair Kergon <agk@redhat.com>,
	Mike Snitzer <snitzer@kernel.org>,
	 Mikulas Patocka <mpatocka@redhat.com>,
	dm-devel@lists.linux.dev,  Chris Mason <clm@fb.com>,
	Josef Bacik <josef@toxicpanda.com>,
	 David Sterba <dsterba@suse.com>,
	Jaegeuk Kim <jaegeuk@kernel.org>,  Chao Yu <chao@kernel.org>,
	Jens Axboe <axboe@kernel.dk>,  Christoph Hellwig <hch@lst.de>,
	Sagi Grimberg <sagi@grimberg.me>,
	 Chaitanya Kulkarni <kch@nvidia.com>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	 linux-btrfs@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	 linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
	 Johannes Thumshirn <johannes.thumshirn@wdc.com>
Subject: [PATCH v3 0/5] block: remove gfp_mask for blkdev_zone_mgmt()
Date: Sun, 28 Jan 2024 23:52:15 -0800	[thread overview]
Message-ID: <20240128-zonefs_nofs-v3-0-ae3b7c8def61@wdc.com> (raw)

Fueled by the LSFMM discussion on removing GFP_NOFS initiated by Willy,
I've looked into the sole GFP_NOFS allocation in zonefs. As it turned out,
it is only done for zone management commands and can be removed.

After digging into more callers of blkdev_zone_mgmt() I came to the
conclusion that the gfp_mask parameter can be removed alltogether.

So this series switches all callers of blkdev_zone_mgmt() to either use
GFP_KERNEL where possible or grab a memalloc_no{fs,io} context.

The final patch in this series is getting rid of the gfp_mask parameter.

Link: https://lore.kernel.org/all/ZZcgXI46AinlcBDP@casper.infradead.org/

---
Changes in v3:
- Fix build error after rebase in dm-zoned-metadata.c
- Link to v2: https://lore.kernel.org/r/20240125-zonefs_nofs-v2-0-2d975c8c1690@wdc.com

Changes in v2:
- guard blkdev_zone_mgmt in dm-zoned-metadata.c with memalloc_noio context
- Link to v1: https://lore.kernel.org/r/20240123-zonefs_nofs-v1-0-cc0b0308ef25@wdc.com

---
Johannes Thumshirn (5):
      zonefs: pass GFP_KERNEL to blkdev_zone_mgmt() call
      dm: dm-zoned: guard blkdev_zone_mgmt with noio scope
      btrfs: zoned: call blkdev_zone_mgmt in nofs scope
      f2fs: guard blkdev_zone_mgmt with nofs scope
      block: remove gfp_flags from blkdev_zone_mgmt

 block/blk-zoned.c              | 19 ++++++++-----------
 drivers/md/dm-zoned-metadata.c |  5 ++++-
 drivers/nvme/target/zns.c      |  5 ++---
 fs/btrfs/zoned.c               | 35 +++++++++++++++++++++++++----------
 fs/f2fs/segment.c              | 15 ++++++++++++---
 fs/zonefs/super.c              |  2 +-
 include/linux/blkdev.h         |  2 +-
 7 files changed, 53 insertions(+), 30 deletions(-)
---
base-commit: 615d300648869c774bd1fe54b4627bb0c20faed4
change-id: 20240110-zonefs_nofs-dd1e22b2e046

Best regards,
-- 
Johannes Thumshirn <johannes.thumshirn@wdc.com>


             reply	other threads:[~2024-01-29  7:52 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-29  7:52 Johannes Thumshirn [this message]
2024-01-29  7:52 ` [PATCH v3 1/5] zonefs: pass GFP_KERNEL to blkdev_zone_mgmt() call Johannes Thumshirn
2024-01-29 23:25   ` Damien Le Moal
2024-02-09  7:44   ` Damien Le Moal
2024-01-29  7:52 ` [PATCH v3 2/5] dm: dm-zoned: guard blkdev_zone_mgmt with noio scope Johannes Thumshirn
2024-01-29 23:26   ` Damien Le Moal
2024-01-30 20:48   ` Mike Snitzer
2024-01-29  7:52 ` [PATCH v3 3/5] btrfs: zoned: call blkdev_zone_mgmt in nofs scope Johannes Thumshirn
2024-01-29 23:27   ` Damien Le Moal
2024-01-31  7:15   ` David Sterba
2024-01-29  7:52 ` [PATCH v3 4/5] f2fs: guard blkdev_zone_mgmt with " Johannes Thumshirn
2024-01-29 23:27   ` Damien Le Moal
2024-01-31  7:32   ` Chao Yu
2024-01-29  7:52 ` [PATCH v3 5/5] block: remove gfp_flags from blkdev_zone_mgmt Johannes Thumshirn
2024-01-29 23:29   ` Damien Le Moal
2024-01-30 20:49   ` Mike Snitzer
2024-02-12  8:00 ` [PATCH v3 0/5] block: remove gfp_mask for blkdev_zone_mgmt() Johannes Thumshirn
2024-02-12 15:41 ` Jens Axboe
2024-03-18 20:45 ` [f2fs-dev] " patchwork-bot+f2fs

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