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From: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Date: Tue, 23 Jan 2024 01:43:43 -0800
Subject: [PATCH 2/5] dm: dm-zoned: pass GFP_KERNEL to blkdev_zone_mgmt
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Message-Id: <20240123-zonefs_nofs-v1-2-cc0b0308ef25@wdc.com>
References: <20240123-zonefs_nofs-v1-0-cc0b0308ef25@wdc.com>
In-Reply-To: <20240123-zonefs_nofs-v1-0-cc0b0308ef25@wdc.com>
To: Damien Le Moal <dlemoal@kernel.org>, 
 Naohiro Aota <naohiro.aota@wdc.com>, Mike Snitzer <snitzer@kernel.org>, 
 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>, 
 "Matthew Wilcox (Oracle)" <willy@infradead.org>

The call to blkdev_zone_mgmt() in dm-zoned is only used to perform a
ZONE_RESET operation when freeing a zone.

This is not done in the IO path, so we can use GFP_KERNEL here, as it will
never recurse back into the driver on reclaim.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
 drivers/md/dm-zoned-metadata.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index fdfe30f7b697..a39734f0cb7d 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -1658,7 +1658,7 @@ static int dmz_reset_zone(struct dmz_metadata *zmd, struct dm_zone *zone)
 
 		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);
 		if (ret) {
 			dmz_dev_err(dev, "Reset zone %u failed %d",
 				    zone->id, ret);

-- 
2.43.0