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linux/drivers/block
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Roger Pau Monne c47206e25f xen-blkfront: improve aproximation of required grants per request 
Improve the calculation of required grants to process a request by
using nr_phys_segments instead of always assuming a request is going
to use all posible segments.

nr_phys_segments contains the number of scatter-gather DMA addr+len
pairs, which is basically what we put at every granted page.
for_each_sg iterates over the DMA addr+len pairs and uses a grant
page for each of them.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 		2013-11-08 09:10:27 -07:00
..
aoe aoe: do not BUG if memory pressure prevented debugfs file creation 2013-09-11 15:59:28 -07:00
drbd treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacks 2013-08-20 13:06:40 +02:00
mtip32xx Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
paride block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
rsxx rsxx: Adding in debugfs entries. 2013-06-19 13:52:10 +02:00
xen-blkback block: replace strict_strtoul() with kstrtoul() 2013-09-11 15:56:56 -07:00
DAC960.c procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
DAC960.h
…
Kconfig rsxx: Changing the adapter name to the official name. 2013-06-19 13:52:09 +02:00
Makefile NVMe: Add nvme-scsi.c 2013-03-28 14:50:49 -04:00
amiflop.c block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
ataflop.c block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
brd.c block: fix a probe argument to blk_register_region 2013-11-08 08:59:39 -07:00
cciss.c cciss: fix info leak in cciss_ioctl32_passthru() 2013-09-24 17:00:26 -07:00
cciss.h
…
cciss_cmd.h
…
cciss_scsi.c cciss: switch to ->show_info() 2013-04-09 14:13:19 -04:00
cciss_scsi.h
…
cpqarray.c cpqarray: fix info leak in ida_locked_ioctl() 2013-09-24 17:00:26 -07:00
cpqarray.h
…
cryptoloop.c move linux/loop.h to drivers/block 2013-06-29 12:46:45 +04:00
floppy.c Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
hd.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ida_cmd.h
…
ida_ioctl.h
…
loop.c block: fix a probe argument to blk_register_region 2013-11-08 08:59:39 -07:00
loop.h move linux/loop.h to drivers/block 2013-06-29 12:46:45 +04:00
mg_disk.c mg_disk: remove deprecated IRQF_DISABLED 2013-11-08 09:10:27 -07:00
nbd.c nbd: correct disconnect behavior 2013-07-03 16:08:05 -07:00
nvme-core.c NVMe: Merge issue on character device bring-up 2013-09-06 16:26:58 -04:00
nvme-scsi.c NVMe: Use kzalloc instead of kmalloc+memset 2013-06-19 13:24:27 -04:00
osdblk.c block: replace strict_strtoul() with kstrtoul() 2013-09-11 15:56:56 -07:00
pktcdvd.c pktcdvd: fix defective misuses of pkt_<level> 2013-09-11 15:59:34 -07:00
ps3disk.c Drivers: block: remove __dev* attributes. 2013-01-03 15:57:15 -08:00
ps3vram.c procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
rbd.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2013-09-19 12:50:37 -05:00
rbd_types.h rbd: get rid of RBD_MAX_SEG_NAME_LEN 2012-12-17 08:37:29 -06:00
smart1,2.h
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sunvdc.c sunvdc: Fix off-by-one in generic_request(). 2013-02-14 11:49:01 -08:00
swim.c drivers/block/swim.c: remove unnecessary platform_set_drvdata() 2013-09-11 15:56:59 -07:00
swim3.c block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
swim_asm.S
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sx8.c block, sx8: fix pointer math issue getting fw version 2012-03-03 19:44:39 +01:00
umem.c Drivers: block: remove __dev* attributes. 2013-01-03 15:57:15 -08:00
umem.h
…
virtio_blk.c virtio_blk: Add missing 'static' qualifiers 2013-05-20 12:09:23 +09:30
xen-blkfront.c xen-blkfront: improve aproximation of required grants per request 2013-11-08 09:10:27 -07:00
xsysace.c xilinx systemace: Fix sparse warnings 2013-07-10 07:47:12 +02:00
z2ram.c block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00