block: Kill gfp_t argument of blkdev_report_zones()

Only GFP_KERNEL and GFP_NOIO are used with blkdev_report_zones(). In
preparation of using vmalloc() for large report buffer and zone array
allocations used by this function, remove its "gfp_t gfp_mask" argument
and rely on the caller context to use memalloc_noio_save/restore() where
necessary (block layer zone revalidation and dm-zoned I/O error path).

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 2 insertions, 3 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 259bd7ad8312..05036e3e3458 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -347,7 +347,7 @@ struct queue_limits {
 extern unsigned int blkdev_nr_zones(struct block_device *bdev);
 extern int blkdev_report_zones(struct block_device *bdev,
                                sector_t sector, struct blk_zone *zones,
-                               unsigned int *nr_zones, gfp_t gfp_mask);
+                               unsigned int *nr_zones);
 extern int blkdev_reset_zones(struct block_device *bdev, sector_t sectors,
                               sector_t nr_sectors, gfp_t gfp_mask);
 extern int blk_revalidate_disk_zones(struct gendisk *disk);
@@ -1673,8 +1673,7 @@ struct block_device_operations {
         /* this callback is with swap_lock and sometimes page table lock held */
         void (*swap_slot_free_notify) (struct block_device *, unsigned long);
         int (*report_zones)(struct gendisk *, sector_t sector,
-                            struct blk_zone *zones, unsigned int *nr_zones,
-                            gfp_t gfp_mask);
+                            struct blk_zone *zones, unsigned int *nr_zones);
         struct module *owner;
         const struct pr_ops *pr_ops;
 };