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authorChristoph Hellwig <hch@lst.de>2019-11-11 11:39:30 +0900
committerJens Axboe <axboe@kernel.dk>2019-11-12 19:12:07 -0700
commitd41003513e61dd9d4974cb441d30b63650b85654 (patch)
treec55164e7ccf02f6e7e936757ed178b06109fcca2 /fs/f2fs
parent23a50861adda26a3f3b3ec5fbca0583133d89538 (diff)
downloadlinux-d41003513e61dd9d4974cb441d30b63650b85654.tar.bz2
block: rework zone reporting
Avoid the need to allocate a potentially large array of struct blk_zone in the block layer by switching the ->report_zones method interface to a callback model. Now the caller simply supplies a callback that is executed on each reported zone, and private data for it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/super.c51
1 files changed, 16 insertions, 35 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 1443cee15863..95761740cf1f 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2857,15 +2857,21 @@ static int init_percpu_info(struct f2fs_sb_info *sbi)
}
#ifdef CONFIG_BLK_DEV_ZONED
+static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
+ void *data)
+{
+ struct f2fs_dev_info *dev = data;
+
+ if (zone->type != BLK_ZONE_TYPE_CONVENTIONAL)
+ set_bit(idx, dev->blkz_seq);
+ return 0;
+}
+
static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
{
struct block_device *bdev = FDEV(devi).bdev;
sector_t nr_sectors = bdev->bd_part->nr_sects;
- sector_t sector = 0;
- struct blk_zone *zones;
- unsigned int i, nr_zones;
- unsigned int n = 0;
- int err = -EIO;
+ int ret;
if (!f2fs_sb_has_blkzoned(sbi))
return 0;
@@ -2890,38 +2896,13 @@ static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
if (!FDEV(devi).blkz_seq)
return -ENOMEM;
-#define F2FS_REPORT_NR_ZONES 4096
-
- zones = f2fs_kzalloc(sbi,
- array_size(F2FS_REPORT_NR_ZONES,
- sizeof(struct blk_zone)),
- GFP_KERNEL);
- if (!zones)
- return -ENOMEM;
-
/* Get block zones type */
- while (zones && sector < nr_sectors) {
-
- nr_zones = F2FS_REPORT_NR_ZONES;
- err = blkdev_report_zones(bdev, sector, zones, &nr_zones);
- if (err)
- break;
- if (!nr_zones) {
- err = -EIO;
- break;
- }
-
- for (i = 0; i < nr_zones; i++) {
- if (zones[i].type != BLK_ZONE_TYPE_CONVENTIONAL)
- set_bit(n, FDEV(devi).blkz_seq);
- sector += zones[i].len;
- n++;
- }
- }
-
- kvfree(zones);
+ ret = blkdev_report_zones(bdev, 0, BLK_ALL_ZONES, f2fs_report_zone_cb,
+ &FDEV(devi));
+ if (ret < 0)
+ return ret;
- return err;
+ return 0;
}
#endif