dm zoned: use GFP_NOIO in I/O path
Use GFP_NOIO for memory allocations in the I/O path. Other memory
allocations in the initialization path can use GFP_KERNEL.
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index 884ff7c..a4fa2ad 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -624,7 +624,7 @@ static int dmz_write_sb(struct dmz_metadata *zmd, unsigned int set)
ret = dmz_rdwr_block(zmd, REQ_OP_WRITE, block, mblk->page);
if (ret == 0)
- ret = blkdev_issue_flush(zmd->dev->bdev, GFP_KERNEL, NULL);
+ ret = blkdev_issue_flush(zmd->dev->bdev, GFP_NOIO, NULL);
return ret;
}
@@ -658,7 +658,7 @@ static int dmz_write_dirty_mblocks(struct dmz_metadata *zmd,
/* Flush drive cache (this will also sync data) */
if (ret == 0)
- ret = blkdev_issue_flush(zmd->dev->bdev, GFP_KERNEL, NULL);
+ ret = blkdev_issue_flush(zmd->dev->bdev, GFP_NOIO, NULL);
return ret;
}
@@ -722,7 +722,7 @@ int dmz_flush_metadata(struct dmz_metadata *zmd)
/* If there are no dirty metadata blocks, just flush the device cache */
if (list_empty(&write_list)) {
- ret = blkdev_issue_flush(zmd->dev->bdev, GFP_KERNEL, NULL);
+ ret = blkdev_issue_flush(zmd->dev->bdev, GFP_NOIO, NULL);
goto out;
}
@@ -927,7 +927,7 @@ static int dmz_recover_mblocks(struct dmz_metadata *zmd, unsigned int dst_set)
(zmd->nr_meta_zones << zmd->dev->zone_nr_blocks_shift);
}
- page = alloc_page(GFP_KERNEL);
+ page = alloc_page(GFP_NOIO);
if (!page)
return -ENOMEM;
@@ -1183,7 +1183,7 @@ static int dmz_update_zone(struct dmz_metadata *zmd, struct dm_zone *zone)
/* Get zone information from disk */
ret = blkdev_report_zones(zmd->dev->bdev, dmz_start_sect(zmd, zone),
- &blkz, &nr_blkz, GFP_KERNEL);
+ &blkz, &nr_blkz, GFP_NOIO);
if (ret) {
dmz_dev_err(zmd->dev, "Get zone %u report failed",
dmz_id(zmd, zone));
@@ -1257,7 +1257,7 @@ static int dmz_reset_zone(struct dmz_metadata *zmd, struct dm_zone *zone)
ret = blkdev_reset_zones(dev->bdev,
dmz_start_sect(zmd, zone),
- dev->zone_nr_sectors, GFP_KERNEL);
+ dev->zone_nr_sectors, GFP_NOIO);
if (ret) {
dmz_dev_err(dev, "Reset zone %u failed %d",
dmz_id(zmd, zone), ret);