Konstantin Belousov 641e2829b6 Extend the struct vm_page wire_count to u_int to avoid the overflow ... of the counter, that may happen when too many sendfile(2) calls are being executed with this vnode [1]. To keep the size of the struct vm_page and offsets of the fields accessed by out-of-tree modules, swap the types and locations of the wire_count and cow fields. Add safety checks to detect cow overflow and force fallback to the normal copy code for zero-copy sockets. [2] Reported by: Anton Yuzhaninov <citrin citrin ru> [1] Suggested by: alc [2] Reviewed by: alc MFC after: 2 weeks		2009-01-03 13:24:08 +00:00
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default_pager.c
device_pager.c
memguard.c
memguard.h
phys_pager.c
pmap.h
redzone.c
redzone.h
swap_pager.c
swap_pager.h
uma_core.c
uma_dbg.c
uma_dbg.h
uma_int.h
uma.h
vm_contig.c
vm_extern.h
vm_fault.c
vm_glue.c
vm_init.c
vm_kern.c
vm_kern.h
vm_map.c	Resurrect shared map locks allowing greater concurrency during some map	2009-01-01 00:31:46 +00:00
vm_map.h	Resurrect shared map locks allowing greater concurrency during some map	2009-01-01 00:31:46 +00:00
vm_meter.c
vm_mmap.c
vm_object.c
vm_object.h
vm_page.c	Extend the struct vm_page wire_count to u_int to avoid the overflow	2009-01-03 13:24:08 +00:00
vm_page.h	Extend the struct vm_page wire_count to u_int to avoid the overflow	2009-01-03 13:24:08 +00:00
vm_pageout.c
vm_pageout.h
vm_pager.c
vm_pager.h
vm_param.h
vm_phys.c
vm_phys.h
vm_reserv.c
vm_reserv.h
vm_unix.c
vm_zeroidle.c
vm.h
vnode_pager.c
vnode_pager.h