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a8e747c5e7
freebsd-dev/sys
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Mateusz Guzik a8e747c5e7 sx: don't do an atomic op in upgrade if it cananot succeed 
The code already pays the cost of reading the lock to obtain the waiters
flag. Checking whether there is more than one reader is not a problem and
avoids dirtying the line.

This also fixes a small corner case: if waiters were to show up between
reading the flag and upgrading the lock, the operation would fail even
though it should not. No correctness change here though.
2018-03-04 21:41:05 +00:00
..
amd64 Unify bulk free operations in several pmaps. 2018-03-04 20:53:20 +00:00
arm Unify bulk free operations in several pmaps. 2018-03-04 20:53:20 +00:00
arm64 Unify bulk free operations in several pmaps. 2018-03-04 20:53:20 +00:00
bsm sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
cam Use bool instead of int for predicate functions relating to work 2018-02-23 16:06:54 +00:00
cddl add ZFS_ENTER protection to .zfs/snapshot vnode operations that need it 2018-02-27 14:08:54 +00:00
compat Properly wrap the BUILD_BUG() function macro in the LinuxKPI. 2018-03-04 19:42:50 +00:00
conf imcsmb(4): Intel integrated Memory Controller (iMC) SMBus controller driver 2018-03-03 01:53:51 +00:00
contrib Define CK_MD_TSO for the relevant arches (i386, amd64 and sparc64). 2018-02-16 17:50:06 +00:00
crypto Remove unused error return from API that cannot fail 2018-02-23 20:15:19 +00:00
ddb db_script_exec: use a saved script name when reporting commands executed 2018-03-04 13:27:21 +00:00
dev Convert to the new(ish) bcd_clocktime conversion functions, add calls to 2018-03-04 21:04:30 +00:00
dts Switch to mainstream DTS for Raspberry Pi-B and Pi-2. 2018-02-27 15:01:17 +00:00
fs sys/fuse: fix off by one error 2018-03-03 20:42:39 +00:00
gdb sys/gdb: further adoption of SPDX licensing ID tags. 2017-11-27 15:16:59 +00:00
geom g_label_ufs: Fix typo from r330264 2018-03-02 06:02:54 +00:00
gnu bwn(4): txpid2g/txpid5g[lh] are not defined after sromrev 7; the default 2018-02-13 17:43:54 +00:00
i386 Unify bulk free operations in several pmaps. 2018-03-04 20:53:20 +00:00
isa Add ISA PNP tables to ISA drivers. Fix a few incidental comments. 2018-01-29 00:22:30 +00:00
kern sx: don't do an atomic op in upgrade if it cananot succeed 2018-03-04 21:41:05 +00:00
kgssapi kgssapi: Remove trivial deadcode 2018-02-14 00:12:03 +00:00
libkern iconv uses strlen directly on user supplied memory 2018-02-26 18:23:36 +00:00
mips Do not include float interfaces when using libsa. 2018-02-23 04:04:25 +00:00
modules Build iicbus/rtc8583 as a module. 2018-03-04 21:06:21 +00:00
net iflib: stop timer callout when stopping 2018-03-02 18:48:07 +00:00
net80211 net80211: sanitize input for ieee80211_output() 2017-12-30 00:40:34 +00:00
netgraph Correct pseudo misspelling in sys/ comments 2018-02-23 18:15:50 +00:00
netinet When checking the TCP fast cookie length, conststently also check 2018-02-27 22:12:38 +00:00
netinet6 Update the MTU in affected routes when IPv6 RA changes the MTU 2018-02-12 19:49:20 +00:00
netipsec Remove unused variables and sysctl declaration. 2018-02-19 12:20:51 +00:00
netpfil pf: Cope with overly large net.pf.states_hashsize 2018-02-25 08:56:44 +00:00
netsmb Unsign some values related to allocation. 2018-01-22 02:08:10 +00:00
nfs Modernize nfssvc(2) registartion. 2018-02-08 20:09:42 +00:00
nfsclient style: Remove remaining deprecated MALLOC/FREE macros 2018-01-25 22:25:13 +00:00
nfsserver sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
nlm Use syscall_helper_register() to register syscalls and initialize though 2018-02-10 01:09:22 +00:00
ofed Import the mthca kernel side infiniband driver from Linux 4.9 and fix 2018-02-13 17:04:34 +00:00
opencrypto Move per-operation data out of the csession structure. 2018-01-26 23:21:50 +00:00
powerpc Honor physical memory regions marked unavailable in the FDT, when present. 2018-03-03 02:06:48 +00:00
riscv Unify bulk free operations in several pmaps. 2018-03-04 20:53:20 +00:00
rpc Do pass removing some write-only variables from the kernel. 2017-12-25 04:48:39 +00:00
security mac_portacl(4): stop panicing INVARIANTS-enabled kernel by loading .ko 2018-02-25 23:10:13 +00:00
sparc64 Do not include float interfaces when using libsa. 2018-02-23 04:04:25 +00:00
sys Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to 2018-03-04 17:06:37 +00:00
teken sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
tests
tools Avoid using \$. It's an unknown escape sequence. Some awks warn about 2018-01-28 05:13:08 +00:00
ufs This change is some refactoring of Mark Johnston's changes in r329375 2018-03-02 04:34:53 +00:00
vm Remove redundant test from r330410. 2018-03-04 21:15:31 +00:00
x86 Correct pseudo misspelling in sys/ comments 2018-02-23 18:15:50 +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