Seth Jennings
4e2e2770b1
zbud: add to mm/ ...
zbud is an special purpose allocator for storing compressed pages. It
is designed to store up to two compressed pages per physical page.
While this design limits storage density, it has simple and
deterministic reclaim properties that make it preferable to a higher
density approach when reclaim will be used.
zbud works by storing compressed pages, or "zpages", together in pairs
in a single memory page called a "zbud page". The first buddy is "left
justifed" at the beginning of the zbud page, and the last buddy is
"right justified" at the end of the zbud page. The benefit is that if
either buddy is freed, the freed buddy space, coalesced with whatever
slack space that existed between the buddies, results in the largest
possible free region within the zbud page.
zbud also provides an attractive lower bound on density. The ratio of
zpages to zbud pages can not be less than 1. This ensures that zbud can
never "do harm" by using more pages to store zpages than the
uncompressed zpages would have used on their own.
This implementation is a rewrite of the zbud allocator internally used
by zcache in the driver/staging tree. The rewrite was necessary to
remove some of the zcache specific elements that were ingrained
throughout and provide a generic allocation interface that can later be
used by zsmalloc and others.
This patch adds zbud to mm/ for later use by zswap.
Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Jenifer Hopper <jhopper@us.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dave Hansen <dave@sr71.net>
Cc: Joe Perches <joe@perches.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Cody P Schafer <cody@linux.vnet.ibm.com>
Cc: Hugh Dickens <hughd@google.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-10 18:11:34 -07:00
dmaengine: PL08x: Avoid collisions with get_signal() macro
2013-07-05 11:40:47 +05:30
bcma: add support for BCM43142
2013-06-27 13:42:16 -04:00
ARM: imx: flexcan: Remove platform file
2013-06-27 15:15:32 +02:00
libceph: fix invalid unsigned->signed conversion for timespec encoding
2013-07-09 12:18:06 -07:00
The common clock framework changes for 3.11 include new clock drivers
2013-07-03 11:54:50 -07:00
lib: add support for LZ4-compressed kernel
2013-07-09 10:33:30 -07:00
mfd: twl-core: Change TWL6025 references to TWL6032
2013-06-20 10:26:29 +02:00
iio:common: Removed stuff macros, added num_data_channels on st_sensors struct and added support on one-shot sysfs reads to 3 byte channel
2013-06-05 18:41:23 +01:00
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00
MMC highlights for 3.11:
2013-07-10 11:16:00 -07:00
net/mlx4_core: Add HW enforcement to VF link state
2013-07-01 13:10:57 -07:00
mmc: esdhc: Fix bug when writing to SDHCI_HOST_CONTROL register
2013-07-05 12:48:35 -04:00
pinctrl: set unit for debounce time pinconfig to usec
2013-06-25 15:34:44 +02:00
MMC highlights for 3.11:
2013-07-10 11:16:00 -07:00
PM / AVS: SmartReflex: use omap_sr * for enable/disable interface
2013-06-10 10:46:18 -07:00
Merge remote-tracking branch 'regulator/topic/linar' into regulator-next
2013-07-01 11:17:08 +01:00
Merge remote-tracking branch 'spi/topic/xilinx' into spi-next
2013-06-26 16:21:06 +01:00
ssb: add struct for serial flash
2013-06-17 14:38:54 -04:00
SUNRPC: Remove unused functions rpc_task_set/has_priority
2013-06-06 16:24:40 -04:00
ARM SoC specific changes
2013-07-02 13:43:38 -07:00
ACPI: Do not use CONFIG_ACPI_HOTPLUG_MEMORY_MODULE
2013-06-19 01:02:50 +02:00
PCI changes for the v3.11 merge window:
2013-07-03 16:31:35 -07:00
alarmtimer: Add functions for timerfd support
2013-05-29 12:57:34 -07:00
drivers: bus: add ARM CCI support
2013-05-29 15:50:34 -04:00
drivers/dma: remove unused support for MEMSET operations
2013-07-03 16:07:42 -07:00
audit: fix mq_open and mq_unlink to add the MQ root as a hidden parent audit_names record
2013-07-09 10:33:19 -07:00
backlight: add devm_backlight_device_{register,unregister}()
2013-07-03 16:07:43 -07:00
mm: kill free_all_bootmem_node()
2013-07-03 16:07:39 -07:00
mm: vmscan: take page buffers dirty and locked state into account
2013-07-03 16:07:29 -07:00
Merge branch 'for-3.11-cpuset' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2013-07-02 20:04:25 -07:00
clk: gate: add CLK_GATE_HIWORD_MASK
2013-06-15 20:23:53 -07:00
clocksource: Reselect clocksource when watchdog validated high-res capability
2013-07-05 11:09:28 +02:00
sched: Rename sched.c as sched/core.c in comments and Documentation
2013-06-19 12:58:42 +02:00
kvm: Move guest entry/exit APIs to context_tracking
2013-05-31 11:32:30 +02:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-07-04 11:40:58 -07:00
acpi-cpufreq: Add new sysfs attribute freqdomain_cpus
2013-06-27 21:51:09 +02:00
cpuidle: simplify multiple driver support
2013-06-11 13:42:38 +02:00
helper for reading ->d_count
2013-07-05 18:59:33 +04:00
debugfs: add get/set for atomic types
2013-06-03 13:55:01 -07:00
PM / devfreq: add comments and Documentation
2013-06-03 20:20:29 +09:00
Power management and ACPI updates for 3.11-rc1
2013-07-03 14:35:40 -07:00
drivers/dma: remove unused support for MEMSET operations
2013-07-03 16:07:42 -07:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-07-06 14:09:38 -07:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-07-06 14:09:38 -07:00
err.h: IS_ERR() can accept __user pointers
2013-07-03 16:07:41 -07:00
f2fs: align data types between on-disk and in-memory block addresses
2013-05-28 15:03:04 +09:00
fb: make fp_get_options name argument const
2013-06-27 16:53:30 +08:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2013-06-19 16:49:39 -07:00
firewire: introduce fw_driver.probe and .remove methods
2013-06-09 18:15:00 +02:00
firmware loader: don't export cache_firmware and uncache_firmware
2013-06-06 12:41:57 -07:00
FMC: add needed headers
2013-06-17 16:38:57 -07:00
fmc: avoid readl/writel namespace conflict
2013-06-19 20:30:32 -07:00
Merge branch 'akpm' (updates from Andrew Morton)
2013-07-09 13:33:36 -07:00
FS-Cache: The retrieval remaining-pages counter needs to be atomic_t
2013-06-19 14:16:47 +01:00
Replace a bunch of file->dentry->d_inode refs with file_inode()
2013-06-29 12:57:13 +04:00
include/linux/gfp.h: fix the comment for GFP_ZONE_TABLE
2013-07-09 10:33:21 -07:00
rcu: Remove TINY_PREEMPT_RCU
2013-06-10 13:45:49 -07:00
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2013-07-04 10:29:23 -07:00
mm/hugetlb: remove hugetlb_prefault
2013-07-03 16:07:32 -07:00
Drivers: hv: Add the GUID fot synthetic fibre channel device
2013-06-03 14:09:14 -07:00
mac80211: set mesh formation field properly
2013-06-03 17:03:18 +02:00
net: core: move mac_pton() to lib/net_utils.c
2013-06-05 12:00:27 -07:00
net/core: Add VF link state control
2013-06-13 17:51:04 -07:00
macvtap: Let TUNSETOFFLOAD actually controll offload features.
2013-06-25 16:44:56 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2013-06-19 16:49:39 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2013-07-03 14:55:13 -07:00
igmp: hash a hash table to speedup ip_check_mc_rcu()
2013-06-12 00:25:23 -07:00
igmp: hash a hash table to speedup ip_check_mc_rcu()
2013-06-12 00:25:23 -07:00
init.h: remove __cpuinit sections from the kernel
2013-06-26 12:13:18 -04:00
Add arch_phys_wc_{add, del} to manipulate WC MTRRs if needed
2013-05-31 13:02:52 +10:00
FMC: add needed headers
2013-06-17 16:38:57 -07:00
genirq: Add irq_get_trigger_type() to get IRQ flags
2013-06-25 11:48:24 +02:00
irqchip: Add irqchip_init dummy function
2013-06-06 10:23:58 +09:00
irqdomain: make irq_linear_revmap() a fast path again
2013-06-24 14:02:41 +01:00
jbd/jbd2: relocate bit_spinlock header to jbd_common
2013-06-12 23:02:35 -04:00
jbd2: invalidate handle if jbd2_journal_restart() fails
2013-07-01 08:12:41 -04:00
jbd/jbd2: relocate bit_spinlock header to jbd_common
2013-06-12 23:02:35 -04:00
net: convert lls to use time_in_range()
2013-07-02 15:53:53 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-07-04 11:40:58 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
KVM fixes for 3.11
2013-07-03 13:21:40 -07:00
lcd: add devm_lcd_device_{register,unregister}()
2013-07-03 16:07:43 -07:00
ahci: make ahci_transmit_led_message into a function pointer
2013-06-06 14:05:23 -07:00
list: introduce list_first_entry_or_null
2013-05-31 17:31:52 -07:00
lib: add lz4 compressor module
2013-07-09 10:33:30 -07:00
phy: Add Marvell 88E1510 phy ID
2013-05-31 00:48:22 -07:00
include/linux/math64.h: add div64_ul()
2013-06-12 16:29:47 -07:00
mm, memcg: don't take task_lock in task_in_mem_cgroup
2013-07-03 16:07:26 -07:00
Driver core / memory: Simplify __memory_block_change_state()
2013-06-01 21:37:09 +02:00
Memory hotplug: Move alternative function definitions to header
2013-06-01 22:24:07 +02:00
mm: remove unused VM_<READfoo> macros and expand other in-place
2013-07-09 10:33:23 -07:00
mm: tune vm_committed_as percpu_counter batching size
2013-07-03 16:07:32 -07:00
mm: remove unused functions is_{normal_idx, normal, dma32, dma}
2013-07-09 10:33:22 -07:00
rapidio: add udev notification
2013-07-03 16:08:05 -07:00
PCI: Allocate only as many MSI vectors as requested by driver
2013-05-28 11:31:16 -06:00
mutex: Add support for wound/wait style locks
2013-06-26 12:10:56 +02:00
mutex: Add w/w mutex slowpath debugging
2013-06-26 12:10:56 +02:00
net: mv643xx_eth: add phy_node to platform_data struct
2013-05-30 17:54:03 -07:00
nbd: correct disconnect behavior
2013-07-03 16:08:05 -07:00
net: do not manually initialize enumerators
2013-06-04 15:17:38 -07:00
MPLS: Add limited GSO support
2013-05-27 22:50:59 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2013-07-03 14:55:13 -07:00
netlink: fix splat in skb_clone with large messages
2013-06-27 22:44:16 -07:00
netpoll: remove return value from netpoll_rx_disable()
2013-05-27 23:18:50 -07:00
NFSv4: Introduce new label structure
2013-06-08 16:20:14 -04:00
Merge branch 'labeled-nfs' into linux-next
2013-06-28 16:29:51 -04:00
NFS: Client implementation of Labeled-NFS
2013-06-08 16:20:16 -04:00
Merge branch 'labeled-nfs' into linux-next
2013-06-28 16:29:51 -04:00
of: remove CONFIG_OF_DEVICE
2013-06-12 12:37:40 +01:00
dma: of: Remove check on always true condition
2013-06-12 07:49:19 +05:30
of: remove of_platform_driver
2013-06-12 12:37:30 +01:00
mailbox/omap: move the OMAP mailbox framework to drivers
2013-06-11 11:41:51 -05:00
mm/pageblock: remove get/set_pageblock_flags
2013-07-03 16:07:32 -07:00
mm: remove lru parameter from __pagevec_lru_add and remove parts of pagevec API
2013-07-03 16:07:31 -07:00
pci: add pcibios_release_device
2013-06-26 21:10:05 +02:00
Merge branch 'pci/misc' into next
2013-06-26 15:55:52 -06:00
percpu-refcount: use RCU-sched insted of normal RCU
2013-06-16 16:12:26 -07:00
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-07-02 16:17:25 -07:00
phy: add reverse MII PHY connection type
2013-05-31 17:19:05 -07:00
kernel/fork.c:copy_process(): don't add the uninitialized child to thread/task/pid lists
2013-07-03 16:08:03 -07:00
Device tree updates for v3.11
2013-07-04 15:51:45 -07:00
PM / Runtime: Rework the "runtime idle" helper routine
2013-06-03 21:49:52 +02:00
posix_cpu_timer: consolidate expiry time type
2013-07-03 16:16:20 +02:00
power_supply: Move of_node out of the #ifdef CONFIG_OF
2013-06-28 18:20:52 -07:00
tracing/context-tracking: Add preempt_schedule_context() for tracing
2013-06-19 12:55:10 +02:00
pstore: Pass header size in the pstore write callback
2013-07-01 18:10:48 +10:00
ptrace: revert "Prepare to fix racy accesses on task breakpoints"
2013-07-09 10:33:26 -07:00
timekeeping: Indicate that clock was set in the pvclock gtod notifier
2013-06-28 23:15:06 +02:00
pwm: Add sysfs interface
2013-06-21 11:32:51 +02:00
rcu: Add _notrace variation of rcu_dereference_raw() and hlist_for_each_entry_rcu()
2013-05-28 22:47:13 -04:00
net: force a reload of first item in hlist_nulls_for_each_entry_rcu
2013-06-02 20:53:59 -07:00
rcu: Shrink TINY_RCU by moving exit_rcu()
2013-06-10 13:45:52 -07:00
rcu: Shrink TINY_RCU by moving exit_rcu()
2013-06-10 13:45:52 -07:00
rcu: Shrink TINY_RCU by moving exit_rcu()
2013-06-10 13:45:52 -07:00
reboot: move arch/x86 reboot= handling to generic kernel
2013-07-09 10:33:29 -07:00
Merge remote-tracking branch 'regmap/topic/field' into regmap-next
2013-06-30 12:40:03 +01:00
reservation: cross-device reservation support, v4
2013-06-28 12:02:15 +10:00
rapidio: change endpoint device name format
2013-07-03 16:08:05 -07:00
rapidio: add udev notification
2013-07-03 16:08:05 -07:00
lib/scatterlist: introduce sg_pcopy_from_buffer() and sg_pcopy_to_buffer()
2013-07-09 10:33:30 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
sched_clock: Make ARM's sched_clock generic for all architectures
2013-06-12 14:02:13 -07:00
FMC: add needed headers
2013-06-17 16:38:57 -07:00
NFS client updates for Linux 3.11
2013-07-09 12:09:43 -07:00
ipc/sem.c: replace shared sem_otime with per-semaphore value
2013-07-09 10:33:28 -07:00
seq_file: add seq_list_*_percpu helpers
2013-07-08 13:36:41 +04:00
serial: sh-sci: HSCIF support
2013-06-17 18:09:53 +09:00
DMA: shdma: shdma_chan_filter() has to be in shdma-base.h
2013-07-05 11:40:59 +05:30
DMA: shdma: add DT support
2013-07-05 11:41:00 +05:30
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2013-07-03 14:55:13 -07:00
include/linux/smp.h:on_each_cpu(): switch back to a macro
2013-07-03 16:07:22 -07:00
net: Unbreak compat_sys_{send,recv}msg
2013-06-06 11:52:14 -07:00
spinlock_api_smp.h: fix preprocessor comments
2013-06-19 23:34:50 +02:00
sched: Rename sched.c as sched/core.c in comments and Documentation
2013-06-19 12:58:42 +02:00
splice: don't pass the address of ->f_pos to methods
2013-06-20 19:02:45 +04:00
rcu: Remove srcu_read_lock_raw() and srcu_read_unlock_raw().
2013-06-10 13:45:25 -07:00
dt:net:stmmac: Add dt specific phy reset callback support.
2013-07-04 14:34:17 -07:00
PM / Sleep: Print last wakeup source on failed wakeup_count write
2013-06-21 00:35:12 +02:00
swap: discard while swapping only if SWAP_FLAG_DISCARD_PAGES
2013-07-03 16:07:32 -07:00
mm: migration: add migrate_entry_wait_huge()
2013-06-12 16:29:46 -07:00
kmsg: honor dmesg_restrict sysctl on /dev/kmsg
2013-06-12 16:29:44 -07:00
tracing: Add DEFINE_EVENT_FN() macro
2013-06-20 22:24:32 -07:00
n_tty: Encapsulate minimum_to_wake within N_TTY
2013-06-17 12:55:11 -07:00
n_tty: Encapsulate minimum_to_wake within N_TTY
2013-06-17 12:55:11 -07:00
usb: add usb2 Link PM variables to sysfs and usb_device
2013-06-05 16:48:40 -07:00
reboot: arm: change reboot_mode to use enum reboot_mode
2013-07-09 10:33:29 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
mm/vmalloc.c: rename VM_UNLIST to VM_UNINITIALIZED
2013-07-09 10:33:21 -07:00
Merge 3.10-rc3 into tty-next
2013-05-27 10:57:53 +09:00
vtime: Use consistent clocks among nohz accounting
2013-05-31 11:31:50 +02:00
FS-Cache patches 2013-07-02
2013-07-02 09:52:47 -07:00
drivers: avoid format strings in names passed to alloc_workqueue()
2013-07-03 16:07:41 -07:00
mm/writeback: commit reason of WB_REASON_FORKER_THREAD mismatch name
2013-07-09 10:33:22 -07:00
zbud: add to mm/
2013-07-10 18:11:34 -07:00
