Konstantin Belousov 7a4b2bc56c The vm_page_trysbusy() should not fail when shared busy counter or ...

VPB_BIT_WAITERS flag were changed between reading of busy_lock and the
cas.  The vm_page_sbusy(), which is the only user of
vm_page_trysbusy() in the tree, panics on the failure, which in these
cases is transient and do not mean that the current page state
prevents sbusying.

Retry the operation inside vm_page_trysbusy() if cas failed, only
return a failure when VPB_BIT_SHARED is cleared.

Reported and tested by:	pho
Reviewed by:	attilio
Sponsored by:	The FreeBSD Foundation

2013-09-05 12:54:40 +00:00

..

_vm_radix.h

On all the architectures, avoid to preallocate the physical memory

2013-08-09 11:28:55 +00:00

default_pager.c

…

device_pager.c

Different consumers of the struct vm_page abuse pageq member to keep

2013-08-10 17:36:42 +00:00

memguard.c

- Add a statically allocated memguard arena since it is needed very early

2013-08-13 22:40:43 +00:00

memguard.h

Replace kernel virtual address space allocation with vmem. This provides

2013-08-07 06:21:20 +00:00

phys_pager.c

The soft and hard busy mechanism rely on the vm object lock to work.

2013-08-09 11:11:11 +00:00

pmap.h

Significantly reduce the cost, i.e., run time, of calls to madvise(...,

2013-08-29 15:49:05 +00:00

redzone.c

…

redzone.h

…

sg_pager.c

Different consumers of the struct vm_page abuse pageq member to keep

2013-08-10 17:36:42 +00:00

swap_pager.c

Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9).

2013-08-22 07:39:53 +00:00

swap_pager.h

…

uma_core.c

Fix bug introduced in rewrite of keg_free_slab in -r251894.

2013-08-31 15:40:15 +00:00

uma_dbg.c

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uma_dbg.h

…

uma_int.h

Different consumers of the struct vm_page abuse pageq member to keep

2013-08-10 17:36:42 +00:00

uma.h

…

vm_extern.h

Replace kernel virtual address space allocation with vmem. This provides

2013-08-07 06:21:20 +00:00

vm_fault.c

On all the architectures, avoid to preallocate the physical memory

2013-08-09 11:28:55 +00:00

vm_glue.c

Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9).

2013-08-22 07:39:53 +00:00

vm_init.c

- Use an arbitrary but reasonably large import size for kva on architectures

2013-08-19 23:02:39 +00:00

vm_kern.c

Add new mmap(2) flags to permit applications to request specific virtual

2013-08-16 21:13:55 +00:00

vm_kern.h

- Add a statically allocated memguard arena since it is needed very early

2013-08-13 22:40:43 +00:00

vm_map.c

Significantly reduce the cost, i.e., run time, of calls to madvise(...,

2013-08-29 15:49:05 +00:00

vm_map.h

Add new mmap(2) flags to permit applications to request specific virtual

2013-08-16 21:13:55 +00:00

vm_meter.c

…

vm_mmap.c

Change the cap_rights_t type from uint64_t to a structure that we can extend

2013-09-05 00:09:56 +00:00

vm_object.c

Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9).

2013-08-22 07:39:53 +00:00

vm_object.h

On all the architectures, avoid to preallocate the physical memory

2013-08-09 11:28:55 +00:00

vm_page.c

The vm_page_trysbusy() should not fail when shared busy counter or

2013-09-05 12:54:40 +00:00

vm_page.h

Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9).

2013-08-22 07:39:53 +00:00

vm_pageout.c

- Eliminate the vm object lock from the active queue scan. It is not

2013-08-21 22:39:19 +00:00

vm_pageout.h

…

vm_pager.c

…

vm_pager.h

…

vm_param.h

Remove unused definition for CTL_VM_NAMES.

2013-08-09 23:47:43 +00:00

vm_phys.c

Different consumers of the struct vm_page abuse pageq member to keep

2013-08-10 17:36:42 +00:00

vm_phys.h

Split the pagequeues per NUMA domains, and split pageademon process

2013-08-07 16:36:38 +00:00

vm_radix.c

Addendum to r254141: The call to vm_radix_insert() in vm_page_cache() can

2013-08-23 17:27:12 +00:00

vm_radix.h

Addendum to r254141: The call to vm_radix_insert() in vm_page_cache() can

2013-08-23 17:27:12 +00:00

vm_reserv.c

…

vm_reserv.h

…

vm_unix.c

…

vm_zeroidle.c

Split the pagequeues per NUMA domains, and split pageademon process

2013-08-07 16:36:38 +00:00

vm.h

rename scheduler->swapper and SI_SUB_RUN_SCHEDULER->SI_SUB_LAST

2013-07-24 09:45:31 +00:00

vnode_pager.c

The soft and hard busy mechanism rely on the vm object lock to work.

2013-08-09 11:11:11 +00:00

vnode_pager.h

…