Konstantin Belousov 6f2af3fcf3 Rework the handling of the tmpfs node backing swap object and tmpfs ... vnode v_object to avoid double-buffering. Use the same object both as the backing store for tmpfs node and as the v_object. Besides reducing memory use up to 2x times for situation of mapping files from tmpfs, it also makes tmpfs read and write operations copy twice bytes less. VM subsystem was already slightly adapted to tolerate OBJT_SWAP object as v_object. Now the vm_object_deallocate() is modified to not reinstantiate OBJ_ONEMAPPING flag and help the VFS to correctly handle VV_TEXT flag on the last dereference of the tmpfs backing object. Reviewed by: alc Tested by: pho, bf MFC after: 1 month		2013-04-28 19:38:59 +00:00
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cd9660	Add currently unused flag argument to the cluster_read(),	2013-03-14 20:28:26 +00:00
deadfs	The deadfs VOPs for vop_ioctl and vop_bmap call itself recursively,	2012-09-13 13:05:45 +00:00
devfs	- Correct mispellings of the word necessary	2013-04-17 11:42:40 +00:00
ext2fs	Prepare to replace the buf splay with a trie:	2013-04-06 22:21:23 +00:00
fdescfs	Merge Capsicum overhaul:	2013-03-02 00:53:12 +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	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
msdosfs	- Correct spelling in comments	2013-04-17 11:56:11 +00:00
nandfs	Remove the last use of the deprecated MNT_VNODE_FOREACH interface in	2013-01-03 19:01:56 +00:00
nfs	Revamp the old NFS server's File Handle Affinity (FHA) code so that	2013-04-17 21:00:22 +00:00
nfsclient	When an NFS unmount occurs, once vflush() writes the last dirty	2013-04-18 23:20:16 +00:00
nfsserver	Move the NFS FHA (File Handle Affinity) code from sys/nfsserver to	2013-04-17 22:42:43 +00:00
nullfs	nullfs: Improve f_flags in statfs().	2013-03-02 12:42:23 +00:00
procfs	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
pseudofs	Complete MPSAFE VFS interface and remove MNTK_MPSAFE flag.	2012-11-09 18:02:25 +00:00
smbfs	smbfs_lookup() in the DOTDOT case operates on dvp->n_parent without	2013-03-09 13:25:45 +00:00
tmpfs	Rework the handling of the tmpfs node backing swap object and tmpfs	2013-04-28 19:38:59 +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