forked from luck/tmp_suning_uos_patched
69cf2d85de
To allow users to choose an elevator algorithm for their particular workloads, change from a make_request-style driver to an I/O-request-queue-handler-style driver. We have to do a couple of things that might be surprising. We manipulate the page _count directly on the assumption that we still have no guarantee that users of the block layer are prohibited from submitting bios containing pages with zero reference counts.[1] If such a prohibition now exists, I can get rid of the _count manipulation. Just as before this patch, we still keep track of the sk_buffs that the network layer still hasn't finished yet and cap the resources we use with a "pool" of skbs.[2] Now that the block layer maintains the disk stats, the aoe driver's diskstats function can go away. 1. https://lkml.org/lkml/2007/3/1/374 2. https://lkml.org/lkml/2007/7/6/241 Signed-off-by: Ed Cashin <ecashin@coraid.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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.. | ||
aoe | ||
drbd | ||
mtip32xx | ||
paride | ||
xen-blkback | ||
amiflop.c | ||
ataflop.c | ||
brd.c | ||
cciss_cmd.h | ||
cciss_scsi.c | ||
cciss_scsi.h | ||
cciss.c | ||
cciss.h | ||
cpqarray.c | ||
cpqarray.h | ||
cryptoloop.c | ||
DAC960.c | ||
DAC960.h | ||
floppy.c | ||
hd.c | ||
ida_cmd.h | ||
ida_ioctl.h | ||
Kconfig | ||
loop.c | ||
Makefile | ||
mg_disk.c | ||
nbd.c | ||
nvme.c | ||
osdblk.c | ||
pktcdvd.c | ||
ps3disk.c | ||
ps3vram.c | ||
rbd_types.h | ||
rbd.c | ||
smart1,2.h | ||
sunvdc.c | ||
swim3.c | ||
swim_asm.S | ||
swim.c | ||
sx8.c | ||
umem.c | ||
umem.h | ||
virtio_blk.c | ||
xd.c | ||
xd.h | ||
xen-blkfront.c | ||
xsysace.c | ||
z2ram.c |