block: kill bio_kmap/kunmap_irq()

There are no users of it anymore.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2017-11-08 11:15:37 -07:00
parent 05b7941394
commit 83f5f7ed72
2 changed files with 2 additions and 13 deletions

View File

@ -216,7 +216,7 @@ may need to abort DMA operations and revert to PIO for the transfer, in
which case a virtual mapping of the page is required. For SCSI it is also
done in some scenarios where the low level driver cannot be trusted to
handle a single sg entry correctly. The driver is expected to perform the
kmaps as needed on such occasions using the __bio_kmap_atomic and bio_kmap_irq
kmaps as needed on such occasions using the bio_kmap_irq and friends
routines as appropriate. A driver could also use the blk_queue_bounce()
routine on its own to bounce highmem i/o to low memory for specific requests
if so desired.
@ -1137,7 +1137,7 @@ use dma_map_sg for scatter gather) to be able to ship it to the driver. For
PIO drivers (or drivers that need to revert to PIO transfer once in a
while (IDE for example)), where the CPU is doing the actual data
transfer a virtual mapping is needed. If the driver supports highmem I/O,
(Sec 1.1, (ii) ) it needs to use __bio_kmap_atomic and bio_kmap_irq to
(Sec 1.1, (ii) ) it needs to use __bio_kmap_atomic or similar to
temporarily map a bio into the virtual address space.

View File

@ -573,17 +573,6 @@ static inline void bvec_kunmap_irq(char *buffer, unsigned long *flags)
}
#endif
static inline char *__bio_kmap_irq(struct bio *bio, struct bvec_iter iter,
unsigned long *flags)
{
return bvec_kmap_irq(&bio_iter_iovec(bio, iter), flags);
}
#define __bio_kunmap_irq(buf, flags) bvec_kunmap_irq(buf, flags)
#define bio_kmap_irq(bio, flags) \
__bio_kmap_irq((bio), (bio)->bi_iter, (flags))
#define bio_kunmap_irq(buf,flags) __bio_kunmap_irq(buf, flags)
/*
* BIO list management for use by remapping drivers (e.g. DM or MD) and loop.
*