Roger Pau Monne 3f3aad5e66 xen-blkback: implement LRU mechanism for persistent grants ... This mechanism allows blkback to change the number of grants persistently mapped at run time. The algorithm uses a simple LRU mechanism that removes (if needed) the persistent grants that have not been used since the last LRU run, or if all grants have been used it removes the first grants in the list (that are not in use). The algorithm allows the user to change the maximum number of persistent grants, by changing max_persistent_grants in sysfs. Since we are storing the persistent grants used inside the request struct (to be able to mark them as "unused" when unmapping), we no longer need the bitmap (unmap_seg). Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: xen-devel@lists.xen.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>		2013-04-18 09:29:23 -04:00
..
aoe	aoe: reserve enough headroom on skbs	2013-03-28 14:29:47 -04:00
drbd	drbd: convert to idr_alloc()	2013-02-27 19:10:15 -08:00
mtip32xx	mtip32xx: fix two smatch warnings	2013-04-04 09:03:41 +02:00
paride	drivers/block/paride: remove depends on CONFIG_EXPERIMENTAL	2013-01-21 14:52:42 -08:00
rsxx	rsxx: remove unused variable	2013-03-26 14:48:12 -06:00
xen-blkback	xen-blkback: implement LRU mechanism for persistent grants	2013-04-18 09:29:23 -04:00
amiflop.c	fs: move code out of buffer.c	2012-01-03 22:54:07 -05:00
ataflop.c	block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers	2011-04-21 21:33:05 +02:00
brd.c	block: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:16 +08:00
cciss_cmd.h	cciss: use new doorbell-bit-5 reset method	2011-05-06 08:23:55 -06:00
cciss_scsi.c	cciss: fix handling of protocol error	2012-09-18 11:57:08 +02:00
cciss_scsi.h	cciss: add cciss_tape_cmds module paramter	2011-05-06 08:23:59 -06:00
cciss.c	cciss: fix invalid use of sizeof in cciss_find_cfgtables()	2013-03-22 12:22:49 -06:00
cciss.h	cciss: Adds simple mode functionality	2011-08-08 11:40:15 +02:00
cpqarray.c	Drivers: block: remove __dev* attributes.	2013-01-03 15:57:15 -08:00
cpqarray.h
cryptoloop.c
DAC960.c	Merge branch 'for-3.9/drivers' of git://git.kernel.dk/linux-block	2013-02-28 13:16:07 -08:00
DAC960.h
floppy.c	floppy: destroy floppy workqueue before cleaning up the queue	2012-11-23 14:32:54 +01:00
hd.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
ida_cmd.h
ida_ioctl.h
Kconfig	block: IBM RamSan 70/80 branding changes.	2013-03-11 19:53:55 +01:00
loop.c	for-linus-20130409	2013-04-09 12:05:41 -07:00
Makefile	Merge branch 'delete-xt-disk' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux into for-3.9/drivers	2013-02-14 16:29:34 +01:00
mg_disk.c	mg_disk: fix error return code in mg_probe()	2013-03-28 09:43:43 -06:00
nbd.c	nbd: fix sparse warning	2013-02-27 19:10:22 -08:00
nvme.c	Merge git://git.infradead.org/users/willy/linux-nvme	2013-03-22 16:43:53 -07:00
osdblk.c	block: Add bio_clone_bioset(), bio_clone_kmalloc()	2012-09-09 10:35:39 +02:00
pktcdvd.c	pktcdvd: Switch to bio_kmalloc()	2012-09-09 10:35:39 +02:00
ps3disk.c	Drivers: block: remove __dev* attributes.	2013-01-03 15:57:15 -08:00
ps3vram.c	Drivers: block: remove __dev* attributes.	2013-01-03 15:57:15 -08:00
rbd_types.h	rbd: get rid of RBD_MAX_SEG_NAME_LEN	2012-12-17 08:37:29 -06:00
rbd.c	rbd: don't zero-fill non-image object requests	2013-03-29 11:32:07 -07:00
smart1,2.h	fix typos 'comamnd' -> 'command' in comments	2011-02-02 11:31:21 +01:00
sunvdc.c	sunvdc: Fix off-by-one in generic_request().	2013-02-14 11:49:01 -08:00
swim3.c	drivers/block/swim3.c: fix null pointer dereference	2013-02-22 10:42:46 +01:00
swim_asm.S
swim.c	swim: Add missing spinlock init	2013-02-09 14:23:33 +01:00
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	Various minor fixes, but a slightly more complex one to fix the per-cpu overload	2013-01-20 16:44:28 -08:00
xen-blkfront.c	xen-blkfront: remove frame list from blk_shadow	2013-03-19 12:50:07 -04:00
xsysace.c	Drivers: block: remove __dev* attributes.	2013-01-03 15:57:15 -08:00
z2ram.c	drivers/block/z2ram.c: correct printing of sector_t	2010-10-28 06:15:26 -06:00