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block: Kill gfp_t argument of blkdev_report_zones()

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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>
This commit is contained in:
Damien Le Moal
2019-07-01 14:09:16 +09:00
committed by Jens Axboe
parent b4c5875d36
commit bd976e5272
12 changed files with 46 additions and 44 deletions
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3
drivers/scsi/sd.h
View File

@@ -213,8 +213,7 @@ extern blk_status_t sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd);
extern void sd_zbc_complete(struct scsi_cmnd *cmd, unsigned int good_bytes,
struct scsi_sense_hdr *sshdr);
extern int sd_zbc_report_zones(struct gendisk *disk, sector_t sector,
struct blk_zone *zones, unsigned int *nr_zones,
gfp_t gfp_mask);
struct blk_zone *zones, unsigned int *nr_zones);
#else /* CONFIG_BLK_DEV_ZONED */

6
drivers/scsi/sd_zbc.c
View File

@@ -109,13 +109,11 @@ static int sd_zbc_do_report_zones(struct scsi_disk *sdkp, unsigned char *buf,
* @sector: Start 512B sector of the report
* @zones: Array of zone descriptors
* @nr_zones: Number of descriptors in the array
* @gfp_mask: Memory allocation mask
*
* Execute a report zones command on the target disk.
*/
int sd_zbc_report_zones(struct gendisk *disk, sector_t sector,
struct blk_zone *zones, unsigned int *nr_zones,
gfp_t gfp_mask)
struct blk_zone *zones, unsigned int *nr_zones)
{
struct scsi_disk *sdkp = scsi_disk(disk);
unsigned int i, buflen, nrz = *nr_zones;
@@ -134,7 +132,7 @@ int sd_zbc_report_zones(struct gendisk *disk, sector_t sector,
*/
buflen = min(queue_max_hw_sectors(disk->queue) << 9,
roundup((nrz + 1) * 64, 512));
buf = kmalloc(buflen, gfp_mask);
buf = kmalloc(buflen, GFP_KERNEL);
if (!buf)
return -ENOMEM;