Alex Elder 1ddbe94eda rbd: rework calculation of new rbd id's ... In order to select a new unique identifier for an added rbd device, the list of all existing ones is searched and a value one greater than the highest id is used. The list search can be avoided by using an atomic variable that keeps track of the current highest id. Using a get/put model for id's we can limit the boundless growth of id numbers a bit by arranging to reuse the current highest id once it gets released. Add these calls to "put" the id when an rbd is getting removed. Note that this changes the pattern of device id's used--new values will never be below the highest one seen so far (even if there exists an unused lower one). I assert this is OK because the key property of an rbd id is its uniqueness, not its magnitude. Regardless, a follow-on patch will restore the old way of doing things, I just think this commit just makes the incremental change to atomics a little easier to understand. Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>		2012-03-22 10:47:47 -05:00
..
aoe	switch device_get_devnode() and ->devnode() to umode_t *	2012-01-03 22:54:55 -05:00
drbd	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
mtip32xx	mtip32xx: removed the irrelevant argument of mtip_hw_submit_io() and the unused member of struct driver_data	2012-02-07 07:54:31 +01:00
paride	paride/pcd: fix bool verbose module parameter.	2012-01-13 09:32:26 +10:30
xen-blkback	Merge branch 'for-3.3/drivers' of git://git.kernel.dk/linux-block	2012-01-15 12:48:41 -08:00
DAC960.c	drivers/block/DAC960: fix -Wuninitialized warning	2012-03-02 10:48:35 +01:00
DAC960.h	Fix DAC960 driver on machines which don't support 64-bit DMA	2007-09-11 17:21:19 -07:00
Kconfig	Merge git://git.infradead.org/users/willy/linux-nvme	2012-01-18 12:34:09 -08:00
Makefile	Merge git://git.infradead.org/users/willy/linux-nvme	2012-01-18 12:34:09 -08:00
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	fs: move code out of buffer.c	2012-01-03 22:54:07 -05:00
cciss.c	block: add and use scsi_blk_cmd_ioctl	2012-01-14 15:07:24 -08:00
cciss.h	cciss: Adds simple mode functionality	2011-08-08 11:40:15 +02:00
cciss_cmd.h	cciss: use new doorbell-bit-5 reset method	2011-05-06 08:23:55 -06:00
cciss_scsi.c	cciss: auto engage SCSI mid layer at driver load time	2011-11-16 09:21:49 +01:00
cciss_scsi.h	cciss: add cciss_tape_cmds module paramter	2011-05-06 08:23:59 -06:00
cpqarray.c	drivers/block/cpqarray.c: use pci_dev->revision	2011-09-21 10:02:13 +02:00
cpqarray.h	…
cryptoloop.c	drivers: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:16:32 -04:00
floppy.c	floppy/scsi: fix setting of BIO flags	2012-03-05 15:49:43 -08:00
hd.c	i8253: Create linux/i8253.h and use it in all 8253 related files	2011-06-09 15:01:37 +02:00
ida_cmd.h	…
ida_ioctl.h	…
loop.c	loop: zero fill bio instead of return -EIO for partial read	2012-02-08 22:07:19 +01:00
mg_disk.c	block: switch s390 tape_block and mg_disk to elevator_change()	2010-08-23 14:02:44 +02:00
nbd.c	nbd-replace-some-printk-with-dev_warn-and-dev_info-checkpatch-fixes	2011-08-19 14:48:28 +02:00
nvme.c	asm-generic: architecture independent readq/writeq for 32bit environment	2012-02-21 16:47:28 -08:00
osdblk.c	block: remove spurious uses of REQ_HARDBARRIER	2010-09-10 12:35:36 +02:00
pktcdvd.c	switch device_get_devnode() and ->devnode() to umode_t *	2012-01-03 22:54:55 -05:00
ps3disk.c	block: Fix files that are modules and hence need module.h	2011-10-31 19:31:13 -04:00
ps3vram.c	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
rbd.c	rbd: rework calculation of new rbd id's	2012-03-22 10:47:47 -05:00
rbd_types.h	rbd: introduce rados block device (rbd), based on libceph	2010-10-20 15:38:13 -07:00
smart1,2.h	fix typos 'comamnd' -> 'command' in comments	2011-02-02 11:31:21 +01:00
sunvdc.c	block: Consolidate phys_segment and hw_segment limits	2010-02-26 13:58:08 +01:00
swim.c	m68k/mac: cleanup forward declarations	2011-12-10 19:52:46 +01:00
swim3.c	block/swim3: Locking fixes	2011-12-12 12:42:12 +01:00
swim_asm.S	m68k: mac - Add SWIM floppy support	2009-03-26 21:15:27 +01:00
sx8.c	block, sx8: fix pointer math issue getting fw version	2012-03-03 19:44:39 +01:00
ub.c	block: add and use scsi_blk_cmd_ioctl	2012-01-14 15:07:24 -08:00
umem.c	block: remove support for bio remapping from ->make_request	2011-09-12 12:12:01 +02:00
umem.h	drivers/block/umem: trim trailing whitespace	2007-10-10 09:25:59 +02:00
viodasd.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
virtio_blk.c	block: add and use scsi_blk_cmd_ioctl	2012-01-14 15:07:24 -08:00
xd.c	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
xd.h	[PATCH] switch xd	2008-10-21 07:48:11 -04:00
xen-blkfront.c	Merge branch 'for-3.3/drivers' of git://git.kernel.dk/linux-block	2012-01-15 12:48:41 -08:00
xsysace.c	block: xsysace: Don't use NO_IRQ	2012-01-05 08:34:29 +01:00
z2ram.c	drivers/block/z2ram.c: correct printing of sector_t	2010-10-28 06:15:26 -06:00