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From: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Date: Thu, 25 Jan 2024 08:53:25 -0800
Subject: [PATCH v2 2/5] dm: dm-zoned: guard blkdev_zone_mgmt with noio
 scope
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Message-Id: <20240125-zonefs_nofs-v2-2-2d975c8c1690@wdc.com>
References: <20240125-zonefs_nofs-v2-0-2d975c8c1690@wdc.com>
In-Reply-To: <20240125-zonefs_nofs-v2-0-2d975c8c1690@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>

Guard the calls to blkdev_zone_mgmt() with a memalloc_noio scope.
This helps us getting rid of the GFP_NOIO argument to blkdev_zone_mgmt();

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
 drivers/md/dm-zoned-metadata.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index fdfe30f7b697..165996cc966c 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -1655,10 +1655,13 @@ static int dmz_reset_zone(struct dmz_metadata *zmd, struct dm_zone *zone)
 
 	if (!dmz_is_empty(zone) || dmz_seq_write_err(zone)) {
 		struct dmz_dev *dev = zone->dev;
+		unsigned int noio_flag;
 
+		noio_flag = memalloc_noio_save();
 		ret = blkdev_zone_mgmt(dev->bdev, REQ_OP_ZONE_RESET,
 				       dmz_start_sect(zmd, zone),
-				       zmd->zone_nr_sectors, GFP_NOIO);
+				       zmd->zone_nr_sectors, GFP_KERNEL);
+		memalloc_noio_restore(noio_flag);
 		if (ret) {
 			dmz_dev_err(dev, "Reset zone %u failed %d",
 				    zone->id, ret);

-- 
2.43.0