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c123c7433b
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alc c123c7433b When the swap pager allocates space on disk, it requests contiguous 
blocks in a single call to blist_alloc().  However, when it frees
that space, it previously called blist_free() on each block, one at a
time.  With this change, the swap pager identifies ranges of
contiguous blocks to be freed, and calls blist_free() once per
range.  In one extreme case, that is described in the review, the time
to perform an munmap(2) was reduced by 55%.

Submitted by:	Doug Moore <dougm@rice.edu>
Reviewed by:	kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D12397
2017-11-28 17:46:03 +00:00
..
amd64 Fix index calculation for the page table pages for efirt 1:1 map. 2017-11-28 09:34:43 +00:00
arm sys/arm: further adoption of SPDX licensing ID tags. 2017-11-27 15:04:10 +00:00
arm64 Fix the direction we move the instruction to retuirn to after exiting the 2017-11-28 16:26:56 +00:00
bsm sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
cam sys/cam: further adoption of SPDX licensing ID tags. 2017-11-27 15:12:43 +00:00
cddl Don't use pcpu_find() to determine if a CPU ID is valid. 2017-11-27 18:42:23 +00:00
compat sys/compat: further adoption of SPDX licensing ID tags. 2017-11-27 15:13:23 +00:00
conf Avoid emitting a PT_INTERP section for powerpc64 kernels and arrange for 2017-11-25 21:45:51 +00:00
contrib Switch the default firmware for npe(4) from the QOS_VLAN one to the 2017-11-24 15:48:17 +00:00
crypto sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
ddb Make kdb_reenter() silent when explicitly called from db_error(). 2017-11-28 12:53:55 +00:00
dev Back out OF module installation in the event of failure. PS3 firmware gives 2017-11-28 06:31:39 +00:00
dts dts: arm64: allwinner: Remove unused dts for pine64 2017-11-18 21:39:54 +00:00
fs sys/fs: further adoption of SPDX licensing ID tags. 2017-11-27 15:15:37 +00:00
gdb sys/gdb: further adoption of SPDX licensing ID tags. 2017-11-27 15:16:59 +00:00
geom sys/geom: adoption of SPDX licensing ID tags. 2017-11-27 15:17:37 +00:00
gnu Update our copy of DTS from the ones from Linux 4.14 2017-11-18 15:46:48 +00:00
i386 Remap ENOATTR to ENODATA in the linuxulator. 2017-11-27 17:03:11 +00:00
isa sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
kern Make kdb_reenter() silent when explicitly called from db_error(). 2017-11-28 12:53:55 +00:00
kgssapi sys/kgssapi: general adoption of SPDX licensing ID tags. 2017-11-27 15:49:00 +00:00
libkern sys/kern: adoption of SPDX licensing ID tags. 2017-11-27 15:20:12 +00:00
mips sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
modules siba(4): Add support for devices have neither PMU nor PWRCTL support. 2017-11-28 00:42:44 +00:00
net sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
net80211 sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netgraph sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netinet sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netinet6 sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netipsec sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netpfil sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netsmb sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
nfs sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
nfsclient sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
nfsserver sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
nlm sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
ofed sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
opencrypto crypto(9) is called from ipsec in CRYPTO_F_CBIFSYNC mode. This is working 2017-11-03 10:27:22 +00:00
powerpc Back out OF module installation in the event of failure. PS3 firmware gives 2017-11-28 06:31:39 +00:00
riscv Merge ^/head r326132 through r326161. 2017-11-24 12:13:27 +00:00
rpc sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
security sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
sparc64 sys/sparc64: further adoption of SPDX licensing ID tags. 2017-11-27 15:10:39 +00:00
sys Make kdb_reenter() silent when explicitly called from db_error(). 2017-11-28 12:53:55 +00:00
teken sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
tests
tools sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
ufs sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
vm When the swap pager allocates space on disk, it requests contiguous 2017-11-28 17:46:03 +00:00
x86 sys/x86: further adoption of SPDX licensing ID tags. 2017-11-27 15:11:47 +00:00
xdr sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
xen sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
Makefile Move sys/boot to stand. Fix all references to new location 2017-11-14 23:02:19 +00:00