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authorChristoph Hellwig <hch@lst.de>2021-03-31 10:29:59 +0300
committerJens Axboe <axboe@kernel.dk>2021-04-06 18:28:17 +0300
commitce288e0535688cc3475a3c3d4d96624514c3550c (patch)
tree41ac394debd88e09edd6c123757b96fb92d09110 /block/blk-settings.c
parentaaff5ebaa2694f283b7d07fdd55fb287ffc4f1e9 (diff)
downloadlinux-ce288e0535688cc3475a3c3d4d96624514c3550c.tar.xz
block: remove BLK_BOUNCE_ISA support
Remove the BLK_BOUNCE_ISA support now that all users are gone. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20210331073001.46776-7-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-settings.c')
-rw-r--r--block/blk-settings.c11
1 files changed, 0 insertions, 11 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c
index b4aa2f37fab6..f9937dd2810e 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -103,28 +103,17 @@ EXPORT_SYMBOL(blk_set_stacking_limits);
void blk_queue_bounce_limit(struct request_queue *q, u64 max_addr)
{
unsigned long b_pfn = max_addr >> PAGE_SHIFT;
- int dma = 0;
- q->bounce_gfp = GFP_NOIO;
#if BITS_PER_LONG == 64
/*
* Assume anything <= 4GB can be handled by IOMMU. Actually
* some IOMMUs can handle everything, but I don't know of a
* way to test this here.
*/
- if (b_pfn < (min_t(u64, 0xffffffffUL, BLK_BOUNCE_HIGH) >> PAGE_SHIFT))
- dma = 1;
q->limits.bounce_pfn = max(max_low_pfn, b_pfn);
#else
- if (b_pfn < blk_max_low_pfn)
- dma = 1;
q->limits.bounce_pfn = b_pfn;
#endif
- if (dma) {
- init_emergency_isa_pool();
- q->bounce_gfp = GFP_NOIO | GFP_DMA;
- q->limits.bounce_pfn = b_pfn;
- }
}
EXPORT_SYMBOL(blk_queue_bounce_limit);