Matthew Dillon 3ebeaf5984 This fixes a large number of bugs in our NFS client side code. A recent ... commit by Kirk also fixed a softupdates bug that could easily be triggered by server side NFS. * An edge case with shared R+W mmap()'s and truncate whereby the system would inappropriately clear the dirty bits on still-dirty data. (applicable to all filesystems) THIS FIX TEMPORARILY DISABLED PENDING FURTHER TESTING. see vm/vm_page.c line 1641 * The straddle case for VM pages and buffer cache buffers when truncating. (applicable to NFS client side) * Possible SMP database corruption due to vm_pager_unmap_page() not clearing the TLB for the other cpu's. (applicable to NFS client side but could effect all filesystems). Note: not considered serious since the corruption occurs beyond the file EOF. * When flusing a dirty buffer due to B_CACHE getting cleared, we were accidently setting B_CACHE again (that is, bwrite() sets B_CACHE), when we really want it to stay clear after the write is complete. This resulted in a corrupt buffer. (applicable to all filesystems but probably only triggered by NFS) * We have to call vtruncbuf() when ftruncate()ing to remove any buffer cache buffers. This is still tentitive, I may be able to remove it due to the second bug fix. (applicable to NFS client side) * vnode_pager_setsize() race against nfs_vinvalbuf()... we have to set n_size before calling nfs_vinvalbuf or the NFS code may recursively vnode_pager_setsize() to the original value before the truncate. This is what was causing the user mmap bus faults in the nfs tester program. (applicable to NFS client side) * Fix to softupdates (see ufs/ffs/ffs_inode.c 1.73, commit made by Kirk). Testing program written by: Avadis Tevanian, Jr. Testing program supplied by: jkh / Apple (see Dec2001 posting to freebsd-hackers with Subject 'NFS: How to make FreeBS fall on its face in one easy step') MFC after: 1 week		2001-12-14 01:16:57 +00:00
..
default_pager.c	With Alfred's permission, remove vm_mtx in favor of a fine-grained approach	2001-07-04 16:20:28 +00:00
device_pager.c	With Alfred's permission, remove vm_mtx in favor of a fine-grained approach	2001-07-04 16:20:28 +00:00
phys_pager.c	With Alfred's permission, remove vm_mtx in favor of a fine-grained approach	2001-07-04 16:20:28 +00:00
pmap.h	KSE Milestone 2	2001-09-12 08:38:13 +00:00
swap_pager.c	Don't use an uninitialized field reserved for callers in the bio structure	2001-10-15 23:02:54 +00:00
swap_pager.h
vm_contig.c	contigmalloc1() could cause the vm_page_zero_count to become incorrect.	2001-10-17 17:34:34 +00:00
vm_extern.h	Move the code that computes the system load average from vm_meter.c	2001-10-20 13:10:43 +00:00
vm_fault.c	Fix deadlock introduced in 1.73 (Jan 1998). The paging-in-progress count	2001-11-09 21:34:45 +00:00
vm_glue.c	Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loader	2001-10-10 23:06:54 +00:00
vm_init.c	Move most of the kernel submap initialization code, including the	2001-08-22 04:07:27 +00:00
vm_kern.c	vm/vm_kern.c: rate limit (to once per second) diagnostic printf when	2001-12-01 00:21:30 +00:00
vm_kern.h	Introduce numerous SMP friendly changes to the mbuf allocator. Namely,	2001-06-22 06:35:32 +00:00
vm_map.c	Don't let pmap_object_init_pt() exhaust all available free pages	2001-10-31 03:06:33 +00:00
vm_map.h	Don't let pmap_object_init_pt() exhaust all available free pages	2001-10-31 03:06:33 +00:00
vm_meter.c	Move the code that computes the system load average from vm_meter.c	2001-10-20 13:10:43 +00:00
vm_mmap.c	Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loader	2001-10-10 23:06:54 +00:00
vm_object.c	Move recently added procedure which was incorrectly placed within an	2001-10-26 16:27:54 +00:00
vm_object.h	Implement kern.maxvnodes. adjusting kern.maxvnodes now actually has a	2001-10-26 00:08:05 +00:00
vm_page.c	This fixes a large number of bugs in our NFS client side code. A recent	2001-12-14 01:16:57 +00:00
vm_page.h	Implement idle zeroing of pages. I've been tinkering with this	2001-08-25 05:00:44 +00:00
vm_pageout.c	Syntax cleanup and documentation, no operational changes.	2001-10-21 06:12:06 +00:00
vm_pageout.h	- Remove asleep(), await(), and M_ASLEEP.	2001-08-10 06:37:05 +00:00
vm_pageq.c	Reorg vm_page.c into vm_page.c, vm_pageq.c, and vm_contig.c (for contigmalloc).	2001-07-04 23:27:09 +00:00
vm_pager.c	Whitespace fixes.	2001-08-04 20:49:29 +00:00
vm_pager.h	With Alfred's permission, remove vm_mtx in favor of a fine-grained approach	2001-07-04 16:20:28 +00:00
vm_param.h	Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loader	2001-10-10 23:06:54 +00:00
vm_swap.c	KSE Milestone 2	2001-09-12 08:38:13 +00:00
vm_unix.c	KSE Milestone 2	2001-09-12 08:38:13 +00:00
vm_zeroidle.c	KSE Milestone 2	2001-09-12 08:38:13 +00:00
vm_zone.c	When laying out objects in a ZONE_INTERRUPT zone, allow them to cross	2001-11-17 00:40:48 +00:00
vm_zone.h	Add a zdestroy() function to the zone allocator. This is needed for the	2001-08-04 20:17:05 +00:00
vm.h	Move most of the kernel submap initialization code, including the	2001-08-22 04:07:27 +00:00
vnode_pager.c	This fixes a large number of bugs in our NFS client side code. A recent	2001-12-14 01:16:57 +00:00
vnode_pager.h	vnode_pager_freepage() is really vm_page_free() in disguise,	2001-04-19 06:18:23 +00:00