linux/lib
Herbert Xu da20420f83 rhashtable: Add nested tables
This patch adds code that handles GFP_ATOMIC kmalloc failure on
insertion.  As we cannot use vmalloc, we solve it by making our
hash table nested.  That is, we allocate single pages at each level
and reach our desired table size by nesting them.

When a nested table is created, only a single page is allocated
at the top-level.  Lower levels are allocated on demand during
insertion.  Therefore for each insertion to succeed, only two
(non-consecutive) pages are needed.

After a nested table is created, a rehash will be scheduled in
order to switch to a vmalloced table as soon as possible.  Also,
the rehash code will never rehash into a nested table.  If we
detect a nested table during a rehash, the rehash will be aborted
and a new rehash will be scheduled.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17 12:28:35 -05:00
..
842 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2016-03-17 21:38:27 -07:00
fonts
lz4 lib: lz4: cleanup unaligned access efficiency detection 2016-04-13 09:22:49 -07:00
lzo
mpi mpi: Fix NULL ptr dereference in mpi_powm() [ver #3] 2016-11-25 12:57:50 +11:00
raid6 lib/raid6: Add AVX2 optimized xor_syndrome functions 2016-11-07 15:08:20 -08:00
reed_solomon
xz
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
asn1_decoder.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2016-05-17 09:33:39 -07:00
assoc_array.c assoc_array: don't call compare_object() on a node 2016-04-06 14:06:48 +01:00
atomic64_test.c atomic64: no need for CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 2016-10-07 18:46:30 -07:00
atomic64.c locking/atomic: Implement atomic{,64,_long}_fetch_{add,sub,and,andnot,or,xor}{,_relaxed,_acquire,_release}() 2016-06-16 10:48:32 +02:00
audit.c
bcd.c
bch.c
bitmap.c lib/bitmap.c: enhance bitmap syntax 2016-10-11 15:06:30 -07:00
bitrev.c
bsearch.c
btree.c
bug.c lib/bug.c: use common WARN helper 2016-03-17 15:09:34 -07:00
build_OID_registry
bust_spinlocks.c
chacha20.c random: replace non-blocking pool with a Chacha20-based CRNG 2016-07-03 00:57:23 -04:00
check_signature.c
checksum.c ipv4: Update parameters for csum_tcpudp_magic to their original types 2016-03-13 23:55:13 -04:00
clz_ctz.c
clz_tab.c
cmdline.c
compat_audit.c
cordic.c
cpu_rmap.c
cpumask.c cpumask: Export cpumask_any_but() 2016-02-29 09:35:20 +01:00
crc7.c
crc8.c
crc16.c
crc32.c crc32: use ktime_get_ns() for measurement 2016-08-02 19:35:08 -04:00
crc32defs.h
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
ctype.c
debug_info.c
debug_locks.c
debugobjects.c Merge branch 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2016-12-13 12:59:57 -08:00
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlz4.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress.c
devres.c
digsig.c lib/digsig: digsig_verify_rsa(): return -EINVAL if modulo length is zero 2016-05-31 16:42:00 +08:00
div64.c
dma-debug.c dmaengine updates for 4.8-rc1 2016-10-06 17:13:54 -07:00
dma-noop.c dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
dump_stack.c
dynamic_debug.c dynamic_debug: add jump label support 2016-08-04 08:50:07 -04:00
dynamic_queue_limits.c
earlycpio.c lib/cpio: Make find_cpio_data()'s offset arg optional 2016-06-08 11:04:19 +02:00
extable.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
fault-inject.c
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_bit.c
flex_array.c
flex_proportions.c
gcd.c lib/GCD.c: use binary GCD algorithm instead of Euclidean 2016-05-20 17:58:30 -07:00
gen_crc32table.c
genalloc.c lib/genalloc.c: start search from start of chunk 2016-10-27 18:43:43 -07:00
glob.c
halfmd4.c
hexdump.c
hweight.c x86/hweight: Get rid of the special calling convention 2016-06-08 15:01:02 +02:00
idr.c lib/ida: document locking requirements a bit better 2016-12-12 18:55:09 -08:00
inflate.c
int_sqrt.c
interval_tree_test.c
interval_tree.c
iomap_copy.c
iomap.c
iommu-common.c
iommu-helper.c lib/iommu-helper: skip to next segment 2016-08-02 19:35:07 -04:00
ioremap.c mm: do not export ioremap_page_range symbol for external module 2017-01-24 16:26:14 -08:00
iov_iter.c fix a fencepost error in pipe_advance() 2017-01-14 19:50:41 -05:00
irq_poll.c This adds a new gcc plugin named "latent_entropy". It is designed to 2016-10-15 10:03:15 -07:00
irq_regs.c
is_single_threaded.c
jedec_ddr_data.c
kasprintf.c
Kconfig lib: Introduce priority array area manager 2017-02-03 16:35:42 -05:00
Kconfig.debug lib: Introduce priority array area manager 2017-02-03 16:35:42 -05:00
Kconfig.kasan mm, kasan: switch SLUB to stackdepot, enable memory quarantine for SLUB 2016-07-28 16:07:41 -07:00
Kconfig.kgdb kgdb: depends on VT 2016-05-23 17:04:14 -07:00
Kconfig.kmemcheck
Kconfig.ubsan Kconfig: lib/Kconfig.ubsan fix reference to ubsan documentation 2016-12-14 16:04:08 -08:00
kfifo.c
klist.c
kobject_uevent.c kobject: improve function-level documentation 2016-10-28 02:42:10 -04:00
kobject.c
kstrtox.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c bug: Provide toggle for BUG on data corruption 2016-10-31 13:01:58 -07:00
list_sort.c
llist.c
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 locking/selftest: Fix output since KERN_CONT changes 2016-11-25 07:12:19 +01:00
lockref.c locking/core: Remove cpu_relax_lowlatency() users 2016-11-16 10:15:10 +01:00
lru_cache.c
Makefile lib: Introduce priority array area manager 2017-02-03 16:35:42 -05:00
md5.c
memory-notifier-error-inject.c
memweight.c
net_utils.c
netdev-notifier-error-inject.c
nlattr.c netlink: smaller nla_attr_minlen table 2016-11-19 22:11:25 -05:00
nmi_backtrace.c nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
nodemask.c include/linux/nodemask.h: create next_node_in() helper 2016-05-19 19:12:14 -07:00
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c
parman.c lib: Introduce priority array area manager 2017-02-03 16:35:42 -05:00
parser.c parser: add u64 number parser 2016-12-06 10:17:03 +02:00
pci_iomap.c
percpu_counter.c lib/percpu_counter: Convert to hotplug state machine 2016-11-09 23:45:26 +01:00
percpu_ida.c
percpu_test.c
percpu-refcount.c percpu-refcount: init ->confirm_switch member properly 2016-08-11 13:52:23 -04:00
plist.c
pm-notifier-error-inject.c
radix-tree.c radix-tree: fix private list warnings 2017-01-24 16:26:14 -08:00
random32.c This adds a new gcc plugin named "latent_entropy". It is designed to 2016-10-15 10:03:15 -07:00
ratelimit.c ratelimit: extend to print suppressed messages on release 2016-08-02 19:35:06 -04:00
rational.c
rbtree_test.c
rbtree.c lib/rbtree.c: fix typo in comment of ____rb_erase_color 2016-12-12 18:55:09 -08:00
reciprocal_div.c
rhashtable.c rhashtable: Add nested tables 2017-02-17 12:28:35 -05:00
sbitmap.c sbitmap: initialize weight to zero 2016-09-19 08:19:40 -06:00
scatterlist.c
seq_buf.c
sg_pool.c lib: scatterlist: move SG pool code from SCSI driver to lib/sg_pool.c 2016-04-15 16:53:14 -04:00
sg_split.c
sha1.c
show_mem.c
siphash.c siphash: implement HalfSipHash1-3 for hash tables 2017-01-09 13:58:57 -05:00
smp_processor_id.c
sort.c
stackdepot.c lib/stackdepot: export save/fetch stack for drivers 2016-11-11 08:12:37 -08:00
stmp_device.c
string_helpers.c string_helpers: add kstrdup_quotable_file 2016-04-21 10:47:26 +10:00
string.c lib: move strtobool() to kstrtobool() 2016-03-17 15:09:34 -07:00
strncpy_from_user.c lib: harden strncpy_from_user 2016-10-11 15:06:30 -07:00
strnlen_user.c unsafe_[get|put]_user: change interface to use a error target label 2016-08-08 13:02:01 -07:00
swiotlb.c swiotlb: ensure that page-sized mappings are page-aligned 2017-01-15 12:37:24 -05:00
syscall.c lib/syscall: Pin the task stack in collect_syscall() 2016-09-16 09:18:53 +02:00
test_bitmap.c
test_bpf.c bpf, test: fix ld_abs + vlan push/pop stress test 2016-10-20 14:39:06 -04:00
test_firmware.c
test_hash.c lib/test_hash.c: fix warning in preprocessor symbol evaluation 2016-09-01 17:52:01 -07:00
test_hexdump.c
test_kasan.c kasan: support use-after-scope detection 2016-11-30 16:32:52 -08:00
test_module.c
test_parman.c lib: Introduce priority array area manager 2017-02-03 16:35:42 -05:00
test_printf.c mm, printk: introduce new format string for flags 2016-03-15 16:55:16 -07:00
test_rhashtable.c rhashtable-test: Fix max_size parameter description 2016-08-08 12:52:42 -07:00
test_siphash.c siphash: implement HalfSipHash1-3 for hash tables 2017-01-09 13:58:57 -05:00
test_static_key_base.c
test_static_keys.c
test_user_copy.c
test_uuid.c lib/uuid: add a test module 2016-05-30 15:26:57 -07:00
test-kstrtox.c
test-string_helpers.c
textsearch.c
timerqueue.c ktime: Get rid of the union 2016-12-25 17:21:22 +01:00
ts_bm.c
ts_fsm.c
ts_kmp.c
ubsan.c UBSAN: fix typo in format string 2016-08-02 17:31:41 -04:00
ubsan.h
ucs2_string.c lib/ucs2_string: Speed up ucs2_utf8size() 2016-09-09 16:08:46 +01:00
uuid.c lib/uuid.c: use correct offset in uuid parser 2016-05-30 15:26:57 -07:00
vsprintf.c lib/uuid.c: introduce a few more generic helpers 2016-05-20 17:58:30 -07:00
win_minmax.c lib/win_minmax: windowed min or max estimator 2016-09-21 00:22:59 -04:00