Kirk McKusick 74a87c3804 Limit the number of cylinder groups that will be searched when ... trying to build a cluster. The limit is tunable using the sysctl vfs.ffs.maxclustersearch. The current limit is 10 cylinder groups per block allocation. It was previously limited to the number of cylinder groups in the filesystem per block allocation. When there were no clusters of the needed size left, it repeatedly searched the whole filesystem for a non-existent cluster on every block allocation. The result was very slow filesystem allocation with 100% CPU utilization. The old behavior can be had by setting vfs.ffs.maxclustersearch to a huge number (1,000,000). This change affects only the layout policy routines so is not able to interfere with the integrity of the filesystem. Reported by: Dmitry Sivachenko (demon@) Tested by: Dmitry Sivachenko (demon@) MFC after: 2 weeks		2015-04-24 23:27:50 +00:00
..
amd64	Move common code from sys/i386/i386/mp_machdep.c and	2015-04-24 16:20:56 +00:00
arm	Add the SOC_IMX51, SOC_IMX53, and SOC_IMX6 options. These are used to	2015-04-23 22:20:43 +00:00
arm64	Add the null implementation of stack_save and stack_save_td.	2015-04-22 12:24:38 +00:00
boot	Fix the gpio-leds node to match the LEDs on RPI2.	2015-04-23 18:36:36 +00:00
bsm
cam	Extend DA_Q_NO_RC16 to MXUB3* devices.	2015-04-21 22:55:52 +00:00
cddl	Fix DTrace's panic() action.	2015-04-24 03:19:30 +00:00
compat	Simplify linux_getcwd(), removing code that was longer used.	2015-04-23 08:41:50 +00:00
conf	Move common code from sys/i386/i386/mp_machdep.c and	2015-04-24 16:20:56 +00:00
contrib	Move ALTQ from contrib to net/altq. The ALTQ code is for many years	2015-04-16 20:22:40 +00:00
crypto	In the version of gcc in the FreeBSD tree, this modification was made to	2015-04-16 17:42:52 +00:00
ddb
dev	vt(4): Simplify mouse area detection	2015-04-24 17:36:26 +00:00
fs	Prevent a double free.	2015-04-20 16:40:13 +00:00
gdb
geom	Move zlib.c from net to libkern.	2015-04-22 14:38:58 +00:00
gnu	The GNU Amlogic DTS files have some errors (e.g. bad register	2015-04-11 08:17:39 +00:00
i386	Move common code from sys/i386/i386/mp_machdep.c and	2015-04-24 16:20:56 +00:00
isa
kern	Use correct length for sparse uiomove(). It must be the clipped to	2015-04-24 22:05:12 +00:00
kgssapi
libkern	Move zlib.c from net to libkern.	2015-04-22 14:38:58 +00:00
mips	Start enabling the available GPIO pins on the Carambola 2.	2015-04-12 00:02:32 +00:00
modules	Rename the kld for oce(4) to if_oce.ko. ifconfig(8) has special knowledge	2015-04-24 14:47:53 +00:00
net	Don't propagate SIOCSIFCAPS from a vlan(4) to its parent. This leads to	2015-04-23 13:19:00 +00:00
net80211	iwn, wlan: fix typos	2015-04-10 20:55:17 +00:00
netgraph	Move zlib.c from net to libkern.	2015-04-22 14:38:58 +00:00
netinet	Fix possible reference leak.	2015-04-24 21:05:29 +00:00
netinet6	Fix r281649: don't call in6_clearscope() twice.	2015-04-17 15:26:08 +00:00
netipsec	Change ipsec_address() and ipsec_logsastr() functions to take two	2015-04-18 16:58:33 +00:00
netnatm
netpfil	Move ALTQ from contrib to net/altq. The ALTQ code is for many years	2015-04-16 20:22:40 +00:00
netsmb
nfs	Avoid closing unallocated socket in case socreate fails.	2015-02-28 20:30:29 +00:00
nfsclient	Remove some oldnfs remnants.	2015-04-18 16:08:06 +00:00
nfsserver	Use M_SIZE() instead of hand-crafted (and mostly correct) NFSMSIZ() macro	2015-01-07 17:22:56 +00:00
nlm
ofed	fd: remove filedesc argument from fdclose	2015-04-11 15:40:28 +00:00
opencrypto	Move zlib.c from net to libkern.	2015-04-22 14:38:58 +00:00
pc98	Fix kernel build ${MACHINE} path	2015-04-16 22:34:10 +00:00
powerpc	Implement hwpmc(4) for Freescale e500 core.	2015-04-18 21:39:17 +00:00
rpc	Remove hard limits on number of accepting NFS connections.	2015-04-07 10:25:27 +00:00
security	cred: add proc_set_cred helper	2015-03-16 00:10:03 +00:00
sparc64	Update this driver to not save copies of registers that are no longer used	2015-04-24 13:12:04 +00:00
sys	Add definition to support alloc_align attribute.	2015-04-24 18:07:34 +00:00
teken	mdoc: improvements to SEE ALSO.	2014-12-27 07:07:37 +00:00
tools
ufs	Limit the number of cylinder groups that will be searched when	2015-04-24 23:27:50 +00:00
vm	Revert r281451. It causes a panic/hang early in boot for a number of	2015-04-24 17:03:53 +00:00
x86	Move common code from sys/i386/i386/mp_machdep.c and	2015-04-24 16:20:56 +00:00
xdr
xen	Use SYSCTL_OUT_STR() to return strings.	2015-03-14 21:40:24 +00:00
Makefile