From 3e6053d76dcbd92b2f9f4ad5ece9bce83149523e Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Thu, 11 Sep 2008 10:57:55 +0200 Subject: block: adjust blkdev_issue_discard for swap Two mods to blkdev_issue_discard(), thinking ahead to its use on swap: 1. Add gfp_mask argument, so swap allocation can use it where GFP_KERNEL might deadlock but GFP_NOIO is safe. 2. Enlarge nr_sects argument from unsigned to sector_t: unsigned long is enough to cover a whole swap area, but sector_t suits any partition. Change sb_issue_discard()'s nr_blocks to sector_t too; but no need seen for a gfp_mask there, just pass GFP_KERNEL down to blkdev_issue_discard(). Signed-off-by: Hugh Dickins Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux/blkdev.h') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 37781d6fe04..b47767c72ce 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -873,15 +874,15 @@ static inline struct request *blk_map_queue_find_tag(struct blk_queue_tag *bqt, } extern int blkdev_issue_flush(struct block_device *, sector_t *); -extern int blkdev_issue_discard(struct block_device *, sector_t sector, - unsigned nr_sects); +extern int blkdev_issue_discard(struct block_device *, + sector_t sector, sector_t nr_sects, gfp_t); static inline int sb_issue_discard(struct super_block *sb, - sector_t block, unsigned nr_blocks) + sector_t block, sector_t nr_blocks) { block <<= (sb->s_blocksize_bits - 9); nr_blocks <<= (sb->s_blocksize_bits - 9); - return blkdev_issue_discard(sb->s_bdev, block, nr_blocks); + return blkdev_issue_discard(sb->s_bdev, block, nr_blocks, GFP_KERNEL); } /* -- cgit v1.2.3