Michel Lespinasse 25c3932596 rwsem: do not block readers at head of queue if other readers are active ... This change fixes a race condition where a reader might determine it needs to block, but by the time it acquires the wait_lock the rwsem has active readers and no queued waiters. In this situation the reader can run in parallel with the existing active readers; it does not need to block until the active readers complete. Thanks to Peter Hurley for noticing this possible race. Signed-off-by: Michel Lespinasse <walken@google.com> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Acked-by: Davidlohr Bueso <davidlohr.bueso@hp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-05-07 07:20:17 -07:00
..
lzo
mpi
raid6
reed_solomon
xz	decompressors: fix typo "POWERPC"	2013-03-13 15:21:48 -07:00
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
asn1_decoder.c
atomic64_test.c
atomic64.c
audit.c
average.c
bcd.c
bch.c
bitmap.c
bitrev.c
bsearch.c
btree.c
bug.c
build_OID_registry
bust_spinlocks.c	printk: Provide a wake_up_klogd() off-case	2013-03-22 16:41:20 -07:00
check_signature.c
checksum.c
clz_tab.c
cmdline.c
cordic.c
cpu_rmap.c
cpu-notifier-error-inject.c
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc7.c
crc8.c
crc16.c
crc32.c
crc32defs.h
ctype.c
debug_locks.c
debugobjects.c
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress.c
devres.c
digsig.c
div64.c
dma-debug.c	dma-debug: update DMA debug API to better handle multiple mappings of a buffer	2013-03-22 16:41:20 -07:00
dump_stack.c
dynamic_debug.c
dynamic_queue_limits.c
earlycpio.c
extable.c
fault-inject.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_last_bit.c
find_next_bit.c
flex_array.c
flex_proportions.c
gcd.c
gen_crc32table.c
genalloc.c
halfmd4.c
hexdump.c
hweight.c
idr.c	idr: idr_alloc() shouldn't trigger lowmem warning when preloaded	2013-03-13 15:21:49 -07:00
inflate.c
int_sqrt.c
interval_tree_test_main.c
interval_tree.c
iomap_copy.c
iomap.c
iommu-helper.c
ioremap.c
irq_regs.c
is_single_threaded.c
jedec_ddr_data.c
kasprintf.c
Kconfig	Move utf16 functions to kernel core and rename	2013-04-15 21:23:03 +01:00
Kconfig.debug
Kconfig.kgdb
Kconfig.kmemcheck
kfifo.c
klist.c
kobject_uevent.c
kobject.c	kobject: fix kset_find_obj() race with concurrent last kobject_put()	2013-04-13 15:15:30 -07:00
kstrtox.c
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c
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
lru_cache.c
Makefile	Move utf16 functions to kernel core and rename	2013-04-15 21:23:03 +01:00
md5.c
memory-notifier-error-inject.c
memweight.c
nlattr.c
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c
parser.c
pci_iomap.c
percpu_counter.c
percpu-rwsem.c
plist.c
pm-notifier-error-inject.c
prio_heap.c
proportions.c
radix-tree.c
random32.c
ratelimit.c
rational.c
rbtree_test.c
rbtree.c
reciprocal_div.c
rwsem-spinlock.c	rwsem: simplify __rwsem_do_wake	2013-05-07 07:20:16 -07:00
rwsem.c	rwsem: do not block readers at head of queue if other readers are active	2013-05-07 07:20:17 -07:00
scatterlist.c
sha1.c
show_mem.c
smp_processor_id.c
sort.c
spinlock_debug.c
stmp_device.c
string_helpers.c
string.c
strncpy_from_user.c
strnlen_user.c
swiotlb.c	x86, kdump: Set crashkernel_low automatically	2013-04-17 12:35:32 -07:00
syscall.c
test-kstrtox.c
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
uuid.c
vsprintf.c