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6c21f6edb8
freebsd-nq/sys
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Konstantin Belousov 6c21f6edb8 The VOP_LOOKUP() implementations for CREATE op do not put the name 
into namecache, to avoid cache trashing when doing large operations.
E.g., tar archive extraction is not usually followed by access to many
of the files created.

Right now, each VOP_LOOKUP() implementation explicitely knowns about
this quirk and tests for both MAKEENTRY flag presence and op != CREATE
to make the call to cache_enter().  Centralize the handling of the
quirk into VFS, by deciding to cache only by MAKEENTRY flag in VOP.
VFS now sets NOCACHE flag for CREATE namei() calls.

Note that the change in semantic is backward-compatible and could be
merged to the stable branch, and is compatible with non-changed
third-party filesystems which correctly handle MAKEENTRY.

Suggested by:	Chris Torek <torek@pi-coral.com>
Reviewed by:	mckusick
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-12-18 10:01:12 +00:00
..
amd64 Fix 8259 IRQ priority resolver. 2014-12-17 03:04:43 +00:00
arm Fix typo. 2014-12-15 12:15:18 +00:00
boot Add configuration files for BERI soft-core synthesized on 2014-12-17 11:36:31 +00:00
bsm
cam Add configuration options to override physical and UNMAP blocks geometry. 2014-12-17 17:30:54 +00:00
cddl The VOP_LOOKUP() implementations for CREATE op do not put the name 2014-12-18 10:01:12 +00:00
compat Adjust printf format specifiers for dev_t and ino_t in kernel. 2014-12-17 07:27:19 +00:00
conf Add a facility for non-init process to declare itself the reaper of 2014-12-15 12:01:42 +00:00
contrib Correctly define constants. 2014-11-28 04:07:06 +00:00
crypto Add some new modes to OpenCrypto. These modes are AES-ICM (can be used 2014-12-12 19:56:36 +00:00
ddb ddb: ANSI-fy function declarations. 2014-10-12 18:01:52 +00:00
dev Update the use of bus space macros to be more correct. 2014-12-17 21:27:27 +00:00
fs The VOP_LOOKUP() implementations for CREATE op do not put the name 2014-12-18 10:01:12 +00:00
gdb Add support for gdb's memory searching capabilities to our in-kernel gdb 2014-09-05 16:40:47 +00:00
geom Add some new modes to OpenCrypto. These modes are AES-ICM (can be used 2014-12-12 19:56:36 +00:00
gnu reiserfs: Use signed i_nlink 2014-09-25 19:10:32 +00:00
i386 This configuration file removes several debugging options, including 2014-12-02 19:55:43 +00:00
isa
kern The VOP_LOOKUP() implementations for CREATE op do not put the name 2014-12-18 10:01:12 +00:00
kgssapi Avoid dynamic syscall overhead for statically compiled modules. 2014-10-26 19:42:44 +00:00
libkern Add some new modes to OpenCrypto. These modes are AES-ICM (can be used 2014-12-12 19:56:36 +00:00
mips Add configuration files for BERI soft-core synthesized on 2014-12-17 11:36:31 +00:00
modules Add some new modes to OpenCrypto. These modes are AES-ICM (can be used 2014-12-12 19:56:36 +00:00
net Provide a dead version of if_get_counter. 2014-12-12 16:10:42 +00:00
net80211 Fix the scan handling for 11b->11g upgrades in a world where, well, 2014-12-18 05:17:18 +00:00
netgraph In preparation of merging projects/sendfile, transform bare access to 2014-11-12 09:57:15 +00:00
netinet Add a missing break. 2014-12-17 20:34:38 +00:00
netinet6 Plug a memory leak in an error code path. 2014-12-17 20:19:57 +00:00
netipsec Treat errors when retrieving security policy as policy violation. 2014-12-11 18:46:11 +00:00
netnatm
netpfil pf(4) needs to have a correct checksum during its processing. 2014-11-19 13:31:08 +00:00
netsmb
nfs Avoid dynamic syscall overhead for statically compiled modules. 2014-10-26 19:42:44 +00:00
nfsclient The VOP_LOOKUP() implementations for CREATE op do not put the name 2014-12-18 10:01:12 +00:00
nfsserver The VOP_LOOKUP() implementations for CREATE op do not put the name 2014-12-18 10:01:12 +00:00
nlm Avoid dynamic syscall overhead for statically compiled modules. 2014-10-26 19:42:44 +00:00
ofed Make sure callbacks being freed are not pending when the 2014-12-11 10:47:50 +00:00
opencrypto Add some new modes to OpenCrypto. These modes are AES-ICM (can be used 2014-12-12 19:56:36 +00:00
pc98 This configuration file removes several debugging options, including 2014-12-02 19:55:43 +00:00
powerpc Move ofw_cpu.c to sys/dev/ofw so that it can be used by other 2014-12-14 22:41:08 +00:00
rpc Add facility to stop all userspace processes. The supposed use of the 2014-12-13 16:18:29 +00:00
security Adjust printf format specifiers for dev_t and ino_t in kernel. 2014-12-17 07:27:19 +00:00
sparc64 This configuration file removes several debugging options, including 2014-12-02 19:55:43 +00:00
sys Add a facility for non-init process to declare itself the reaper of 2014-12-15 12:01:42 +00:00
teken
tools Allow the make_dtb script to work outside of a "make buildkernel" context 2014-08-30 22:39:15 +00:00
ufs The VOP_LOOKUP() implementations for CREATE op do not put the name 2014-12-18 10:01:12 +00:00
vm Always ignore the deprecated MAP_RENAME and MAP_NORESERVE flags to mmap(). 2014-12-05 15:24:42 +00:00
x86 xen/intr: balance dynamic interrupts across available vCPUs 2014-12-10 13:25:21 +00:00
xdr
xen xen: convert the Grant-table code to a NewBus device 2014-12-10 11:35:41 +00:00
Makefile Remove "pci" from CSCOPEDIRS. 2014-09-23 06:32:19 +00:00