Dan Streetman
a75f232ce0
lib/plist: add plist_requeue
...
Add plist_requeue(), which moves the specified plist_node after all other
same-priority plist_nodes in the list. This is essentially an optimized
plist_del() followed by plist_add().
This is needed by swap, which (with the next patch in this set) uses a
plist of available swap devices. When a swap device (either a swap
partition or swap file) are added to the system with swapon(), the device
is added to a plist, ordered by the swap device's priority. When swap
needs to allocate a page from one of the swap devices, it takes the page
from the first swap device on the plist, which is the highest priority
swap device. The swap device is left in the plist until all its pages are
used, and then removed from the plist when it becomes full.
However, as described in man 2 swapon, swap must allocate pages from swap
devices with the same priority in round-robin order; to do this, on each
swap page allocation, swap uses a page from the first swap device in the
plist, and then calls plist_requeue() to move that swap device entry to
after any other same-priority swap devices. The next swap page allocation
will again use a page from the first swap device in the plist and requeue
it, and so on, resulting in round-robin usage of equal-priority swap
devices.
Also add plist_test_requeue() test function, for use by plist_test() to
test plist_requeue() function.
Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Shaohua Li <shli@fusionio.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Cc: Weijie Yang <weijieut@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.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>
2014-06-04 16:54:07 -07:00
..
fonts
partly revert commit 8a10bc9: parisc/sti_console: prefer Linux fonts over built-in ROM fonts
2014-03-23 16:44:42 +01:00
lz4
lz4: fix compression/decompression signedness mismatch
2013-09-11 15:59:45 -07:00
lzo
lib/lzo: Update LZO compression to current upstream version
2013-02-20 19:36:01 +01:00
mpi
MPILIB: add module description and license
2013-09-25 17:17:01 +01:00
raid6
md update for v3.12
2013-09-10 13:03:41 -07:00
reed_solomon
xz
decompressors: fix typo "POWERPC"
2013-03-13 15:21:48 -07:00
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
argv_split(): teach it to handle mutable strings
2013-04-29 18:28:19 -07:00
asn1_decoder.c
Nothing all that exciting; a new module-from-fd syscall for those who want
2012-12-19 07:55:08 -08:00
assoc_array.c
assoc_array: remove global variable
2014-01-23 09:25:10 -08:00
atomic64.c
lib: atomic64: Initialize locks statically to fix early users
2012-12-20 13:50:16 -08:00
atomic64_test.c
audit.c
audit: Add generic compat syscall support
2014-03-20 10:11:35 -04:00
average.c
lib: Ensure EWMA does not store wrong intermediate values
2014-01-16 23:46:06 -08:00
bcd.c
bch.c
bitmap.c
propagate name change to comments in kernel source
2012-12-06 10:39:54 +01:00
bitrev.c
bsearch.c
btree.c
bug.c
taint: add explicit flag to show whether lock dep is still OK.
2013-01-21 17:17:57 +10:30
build_OID_registry
X.509: do not emit any informational output
2013-06-19 17:54:06 +02:00
bust_spinlocks.c
printk: Provide a wake_up_klogd() off-case
2013-03-22 16:41:20 -07:00
check_signature.c
checksum.c
asm-generic headers: Allow yet more arch overrides in checksum.h
2013-02-11 20:00:33 +05:30
clz_ctz.c
lib/clz_ctz.c: add prototype declarations in lib/clz_ctz.c
2014-04-03 16:21:12 -07:00
clz_tab.c
cmdline.c
lib/cmdline.c: declare exported symbols immediately
2014-01-23 16:36:57 -08:00
compat_audit.c
audit: Add generic compat syscall support
2014-03-20 10:11:35 -04:00
cordic.c
cpu-notifier-error-inject.c
cpu_rmap.c
Remove GENERIC_HARDIRQ config option
2013-09-13 15:09:52 +02:00
cpumask.c
lib/cpumask.c: use memblock apis for early memory allocations
2014-01-21 16:19:47 -08:00
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crypto: crct10dif - Add fallback for broken initrds
2013-09-12 15:31:34 +10:00
crc7.c
crc8.c
crc16.c
crc32.c
lib: crc32: reduce number of cases for crc32{, c}_combine
2013-11-04 15:27:08 -05:00
crc32defs.h
ctype.c
debug_locks.c
mutex: Add support for wound/wait style locks
2013-06-26 12:10:56 +02:00
debugobjects.c
lib/debugobjects.c: convert printk(KERN_DEBUG to pr_debug
2014-06-04 16:53:53 -07:00
dec_and_lock.c
decompress.c
initramfs: debug detected compression method
2014-04-07 16:36:11 -07:00
decompress_bunzip2.c
decompress_inflate.c
lib/decompress_inflate.c: include appropriate header file
2014-04-03 16:21:12 -07:00
decompress_unlz4.c
lib/decompress_unlz4.c: always set an error return code on failures
2014-01-23 16:37:04 -08:00
decompress_unlzma.c
decompress_unlzo.c
lib/lzo: Rename lzo1x_decompress.c to lzo1x_decompress_safe.c
2013-02-20 19:36:00 +01:00
decompress_unxz.c
devres.c
lib/devres.c: fix checkpatch warnings
2014-05-24 07:28:01 +09:00
digsig.c
lib/digsig.c: use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...))
2013-11-13 12:09:22 +09:00
div64.c
math64: New separate div64_u64_rem helper
2013-08-23 09:02:14 -04:00
dma-debug.c
dma debug: account for cachelines and read-only mappings in overlap tracking
2014-03-04 07:55:47 -08:00
dump_stack.c
asmlinkage: Add explicit __visible to drivers/*, lib/*, kernel/*
2014-05-05 16:07:46 -07:00
dynamic_debug.c
dynamic_debug: replace obselete simple_strtoul() with kstrtouint()
2014-01-27 21:02:39 -08:00
dynamic_queue_limits.c
earlycpio.c
earlycpio.c: Fix the confusing comment of find_cpio_data().
2013-08-14 23:24:01 +02:00
extable.c
fault-inject.c
debugfs: add get/set for atomic types
2013-06-03 13:55:01 -07:00
fdt.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
find_last_bit.c
find_next_bit.c
flex_array.c
reciprocal_divide: update/correction of the algorithm
2014-01-21 23:17:20 -08:00
flex_proportions.c
gcd.c
gen_crc32table.c
genalloc.c
lib/genalloc.c: add check gen_pool_dma_alloc() if dma pointer is not NULL
2014-01-29 16:22:39 -08:00
halfmd4.c
hash.c
lib: hash: follow-up fixups for arch hash
2013-12-19 00:14:53 -05:00
hexdump.c
lib: introduce upper case hex ascii helpers
2013-09-20 15:38:26 -04:00
hweight.c
idr.c
lib/idr.c: use RCU_INIT_POINTER(x, NULL)
2014-04-07 16:36:07 -07:00
inflate.c
int_sqrt.c
lib/int_sqrt.c: optimize square root algorithm
2013-04-29 18:28:19 -07:00
interval_tree.c
interval_tree_test_main.c
random32: rename random32 to prandom
2012-12-17 17:15:26 -08:00
iomap.c
Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP
2014-04-07 16:36:11 -07:00
iomap_copy.c
iommu-helper.c
ioremap.c
iovec.c
Hoist memcpy_fromiovec/memcpy_toiovec into lib/
2013-05-20 10:24:22 +09:30
irq_regs.c
is_single_threaded.c
jedec_ddr_data.c
kasprintf.c
Kconfig
Merge git://git.infradead.org/users/eparis/audit
2014-04-12 12:38:53 -07:00
Kconfig.debug
mm,vmacache: add debug data
2014-06-04 16:53:57 -07:00
Kconfig.kgdb
treewide: Fix typo in printk
2013-06-18 13:48:45 +02:00
Kconfig.kmemcheck
kfifo.c
kfifo: kfifo_copy_{to,from}_user: fix copied bytes calculation
2013-11-15 09:32:23 +09:00
klist.c
klist: del waiter from klist_remove_waiters before wakeup waitting process
2013-05-21 10:16:39 -07:00
kobject.c
sysfs, kobject: add sysfs wrapper for kernfs_enable_ns()
2014-02-07 16:08:57 -08:00
kobject_uevent.c
kobject: Make support for uevent_helper optional.
2014-04-25 12:00:49 -07:00
kstrtox.c
lib/kstrtox.c: remove redundant cleanup
2014-01-23 16:36:57 -08:00
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c
list_sort.c
lib/: rename random32() to prandom_u32()
2013-04-29 18:28:42 -07:00
llist.c
llists-move-llist_reverse_order-from-raid5-to-llistc-fix
2013-11-15 09:32:22 +09:00
locking-selftest-hardirq.h
locking-selftest-mutex.h
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h
locking-selftest-rsem.h
locking-selftest-softirq.h
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h
locking-selftest-wsem.h
locking-selftest.c
sched: Introduce preempt_count accessor functions
2013-09-25 14:07:32 +02:00
lockref.c
lockref: include mutex.h rather than reinvent arch_mutex_cpu_relax
2013-11-27 20:37:33 -08:00
lru_cache.c
lru_cache: introduce lc_get_cumulative()
2013-03-22 22:17:36 -06:00
Makefile
Merge git://git.infradead.org/users/eparis/audit
2014-04-12 12:38:53 -07:00
md5.c
memory-notifier-error-inject.c
memweight.c
net_utils.c
net: core: move mac_pton() to lib/net_utils.c
2013-06-05 12:00:27 -07:00
nlattr.c
netlink: don't compare the nul-termination in nla_strcmp
2014-04-01 15:25:02 -04:00
notifier-error-inject.c
mode_t, whack-a-mole at 11...
2013-04-09 14:13:05 -04:00
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
powerpc+of: Rename and fix OF reconfig notifier error inject module
2012-12-14 10:32:52 +11:00
oid_registry.c
Give the OID registry file module info to avoid kernel tainting
2013-05-05 14:38:00 -07:00
parser.c
lib/parser.c: put EXPORT_SYMBOLs in the conventional place
2014-01-23 16:36:55 -08:00
pci_iomap.c
percpu-refcount.c
percpu-refcount: Add a WARN() for ref going negative
2014-01-21 04:40:56 -05:00
percpu_counter.c
lib/percpu_counter.c: fix bad percpu counter state during suspend
2014-04-08 16:48:51 -07:00
percpu_ida.c
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
2014-02-14 10:45:18 -08:00
percpu_test.c
percpu: add test module for various percpu operations
2013-11-13 12:09:11 +09:00
plist.c
lib/plist: add plist_requeue
2014-06-04 16:54:07 -07:00
pm-notifier-error-inject.c
prio_heap.c
proportions.c
radix-tree.c
mm: replace __get_cpu_var uses with this_cpu_ptr
2014-06-04 16:54:03 -07:00
random32.c
lib/random32.c: minor cleanups and kdoc fix
2014-04-03 16:21:11 -07:00
ratelimit.c
rational.c
rbtree.c
rbtree: add postorder iteration functions
2013-09-11 15:59:19 -07:00
rbtree_test.c
rbtree/test: test rbtree_postorder_for_each_entry_safe()
2014-01-23 16:37:03 -08:00
reciprocal_div.c
reciprocal_divide: update/correction of the algorithm
2014-01-21 23:17:20 -08:00
scatterlist.c
lib/scatterlist: export sg_miter_skip()
2013-12-08 17:56:37 -08:00
sha1.c
show_mem.c
lib/show_mem.c: show num_poisoned_pages when oom
2014-01-21 16:19:48 -08:00
smp_processor_id.c
percpu: add preemption checks to __this_cpu ops
2014-04-07 16:36:14 -07:00
sort.c
stmp_device.c
string.c
lib: add glibc style strchrnul() variant
2014-05-23 11:23:27 +09:00
string_helpers.c
lib/string_helpers: introduce generic string_unescape
2013-04-30 17:04:03 -07:00
strncpy_from_user.c
strnlen_user.c
swiotlb.c
x86: enable DMA CMA with swiotlb
2014-06-04 16:53:57 -07:00
syscall.c
lib/syscall.c: unexport task_current_syscall()
2014-04-03 16:21:06 -07:00
test-kstrtox.c
test-string_helpers.c
lib/string_helpers: introduce generic string_unescape
2013-04-30 17:04:03 -07:00
test_module.c
test: add minimal module for verification testing
2014-01-23 16:36:57 -08:00
test_user_copy.c
test: check copy_to/from_user boundary validation
2014-01-23 16:36:57 -08:00
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ucs2_string.c
Move utf16 functions to kernel core and rename
2013-04-15 21:23:03 +01:00
usercopy.c
Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
2013-04-30 17:04:09 -07:00
uuid.c
uuid: use prandom_bytes()
2013-04-29 18:28:42 -07:00
vsprintf.c
vsprintf: remove %n handling
2014-04-03 16:21:07 -07:00