attilio 16c7563cf4 The soft and hard busy mechanism rely on the vm object lock to work. ... Unify the 2 concept into a real, minimal, sxlock where the shared acquisition represent the soft busy and the exclusive acquisition represent the hard busy. The old VPO_WANTED mechanism becames the hard-path for this new lock and it becomes per-page rather than per-object. The vm_object lock becames an interlock for this functionality: it can be held in both read or write mode. However, if the vm_object lock is held in read mode while acquiring or releasing the busy state, the thread owner cannot make any assumption on the busy state unless it is also busying it. Also: - Add a new flag to directly shared busy pages while vm_page_alloc and vm_page_grab are being executed. This will be very helpful once these functions happen under a read object lock. - Move the swapping sleep into its own per-object flag The KPI is heavilly changed this is why the version is bumped. It is very likely that some VM ports users will need to change their own code. Sponsored by: EMC / Isilon storage division Discussed with: alc Reviewed by: jeff, kib Tested by: gavin, bapt (older version) Tested by: pho, scottl		2013-08-09 11:11:11 +00:00
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cd9660	- Add const-qualifiers to the arguments of isonum_*().	2013-07-28 12:29:10 +00:00
deadfs	The deadfs VOPs for vop_ioctl and vop_bmap call itself recursively,	2012-09-13 13:05:45 +00:00
devfs	make path matching in devfs rules consistent and sane (and safer)	2013-07-26 14:25:58 +00:00
ext2fs	Small typo.	2013-08-08 22:07:59 +00:00
fdescfs	Fix several typos	2013-05-12 16:43:26 +00:00
fifofs	I am comparing current pipe code with the one in 8.3-STABLE r236165,	2012-07-31 05:48:35 +00:00
fuse	The soft and hard busy mechanism rely on the vm object lock to work.	2013-08-09 11:11:11 +00:00
msdosfs	The fsync(2) call should sync the vnode in such way that even after	2013-05-02 20:00:11 +00:00
nandfs	- Convert the bufobj lock to rwlock.	2013-05-31 00:43:41 +00:00
nfs	The NFSv4 server incorrectly assumed that the high order words of	2013-07-20 22:35:32 +00:00
nfsclient	Add support for host-based (Kerberos 5 service principal) initiator	2013-07-09 01:05:28 +00:00
nfsserver	- Convert the bufobj lock to rwlock.	2013-05-31 00:43:41 +00:00
nullfs	The tvp vnode on rename is usually unlinked. Drop the cached null	2013-07-04 19:01:18 +00:00
procfs	Relax the vm object locking. Use a read lock.	2013-06-05 17:00:10 +00:00
pseudofs	Complete MPSAFE VFS interface and remove MNTK_MPSAFE flag.	2012-11-09 18:02:25 +00:00
smbfs	- Fix double frees/user after free.	2013-07-03 10:31:45 +00:00
tmpfs	The soft and hard busy mechanism rely on the vm object lock to work.	2013-08-09 11:11:11 +00:00
udf	Add currently unused flag argument to the cluster_read(),	2013-03-14 20:28:26 +00:00
unionfs	r16312 is not any longer real since many years (likely since when VFS	2012-11-19 22:43:45 +00:00