diff options
Diffstat (limited to 'share/man/man9')
| -rw-r--r-- | share/man/man9/Makefile | 26 | ||||
| -rw-r--r-- | share/man/man9/copy.9 | 56 | ||||
| -rw-r--r-- | share/man/man9/device_get_sysctl.9 | 4 | ||||
| -rw-r--r-- | share/man/man9/fail.9 | 7 | ||||
| -rw-r--r-- | share/man/man9/ifnet.9 | 11 | ||||
| -rw-r--r-- | share/man/man9/uio.9 | 45 | ||||
| -rw-r--r-- | share/man/man9/vm_map.9 | 11 | ||||
| -rw-r--r-- | share/man/man9/vm_map_sync.9 (renamed from share/man/man9/vm_map_clean.9) | 16 | ||||
| -rw-r--r-- | share/man/man9/vm_page_copy.9 | 57 | ||||
| -rw-r--r-- | share/man/man9/vm_page_protect.9 | 75 | ||||
| -rw-r--r-- | share/man/man9/vm_page_zero_fill.9 | 53 |
11 files changed, 128 insertions, 233 deletions
diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile index 50edf73..a04cb68 100644 --- a/share/man/man9/Makefile +++ b/share/man/man9/Makefile @@ -296,7 +296,6 @@ MAN= accept_filter.9 \ vm_fault_prefault.9 \ vm_map.9 \ vm_map_check_protection.9 \ - vm_map_clean.9 \ vm_map_create.9 \ vm_map_delete.9 \ vm_map_entry_resize_free.9 \ @@ -314,11 +313,11 @@ MAN= accept_filter.9 \ vm_map_simplify_entry.9 \ vm_map_stack.9 \ vm_map_submap.9 \ + vm_map_sync.9 \ vm_map_wire.9 \ vm_page_alloc.9 \ vm_page_bits.9 \ vm_page_cache.9 \ - vm_page_copy.9 \ vm_page_deactivate.9 \ vm_page_dontneed.9 \ vm_page_flag.9 \ @@ -328,12 +327,10 @@ MAN= accept_filter.9 \ vm_page_insert.9 \ vm_page_io.9 \ vm_page_lookup.9 \ - vm_page_protect.9 \ vm_page_rename.9 \ vm_page_sleep_if_busy.9 \ vm_page_wakeup.9 \ vm_page_wire.9 \ - vm_page_zero_fill.9 \ vm_set_page_size.9 \ vn_fullpath.9 \ vn_isdisk.9 \ @@ -551,8 +548,10 @@ MLINKS+=config_intrhook.9 config_intrhook_disestablish.9 \ config_intrhook.9 config_intrhook_establish.9 MLINKS+=contigmalloc.9 contigfree.9 MLINKS+=copy.9 copyin.9 \ + copy.9 copyin_nofault.9 \ copy.9 copyinstr.9 \ copy.9 copyout.9 \ + copy.9 copyout_nofault.9 \ copy.9 copystr.9 MLINKS+=critical_enter.9 critical.9 \ critical_enter.9 critical_exit.9 @@ -860,6 +859,22 @@ MLINKS+=\ mbuf.9 mtod.9 \ mbuf.9 M_TRAILINGSPACE.9 \ mbuf.9 M_WRITABLE.9 +MLINKS+=\ + mbuf_tags.9 m_tag_alloc.9 \ + mbuf_tags.9 m_tag_copy.9 \ + mbuf_tags.9 m_tag_copy_chain.9 \ + mbuf_tags.9 m_tag_delete.9 \ + mbuf_tags.9 m_tag_delete_chain.9 \ + mbuf_tags.9 m_tag_delete_nonpersistent.9 \ + mbuf_tags.9 m_tag_find.9 \ + mbuf_tags.9 m_tag_first.9 \ + mbuf_tags.9 m_tag_free.9 \ + mbuf_tags.9 m_tag_get.9 \ + mbuf_tags.9 m_tag_init.9 \ + mbuf_tags.9 m_tag_locate.9 \ + mbuf_tags.9 m_tag_next.9 \ + mbuf_tags.9 m_tag_prepend.9 \ + mbuf_tags.9 m_tag_unlink.9 MLINKS+=MD5.9 MD5Init.9 \ MD5.9 MD5Transform.9 MLINKS+=mdchain.9 md_append_record.9 \ @@ -1268,7 +1283,8 @@ MLINKS+=uidinfo.9 uifind.9 \ uidinfo.9 uifree.9 \ uidinfo.9 uihashinit.9 \ uidinfo.9 uihold.9 -MLINKS+=uio.9 uiomove.9 +MLINKS+=uio.9 uiomove.9 \ + uio.9 uiomove_nofault.9 MLINKS+=usbdi.9 usbd_do_request.9 \ usbdi.9 usbd_do_request_flags.9 \ usbdi.9 usbd_errstr.9 \ diff --git a/share/man/man9/copy.9 b/share/man/man9/copy.9 index b6b975f..37c7a0c 100644 --- a/share/man/man9/copy.9 +++ b/share/man/man9/copy.9 @@ -34,13 +34,15 @@ .\" .\" $FreeBSD$ .\" -.Dd January 7, 1996 +.Dd July 9, 2011 .Dt COPY 9 .Os .Sh NAME .Nm copy , .Nm copyin , +.Nm copyin_nofault , .Nm copyout , +.Nm copyout_nofault , .Nm copystr , .Nm copyinstr .Nd kernel copy functions @@ -50,8 +52,12 @@ .Ft int .Fn copyin "const void *uaddr" "void *kaddr" "size_t len" .Ft int +.Fn copyin_nofault "const void *uaddr" "void *kaddr" "size_t len" +.Ft int .Fn copyout "const void *kaddr" "void *uaddr" "size_t len" .Ft int +.Fn copyout_nofault "const void *kaddr" "void *uaddr" "size_t len" +.Ft int .Fn copystr "const void *kfaddr" "void *kdaddr" "size_t len" "size_t *done" .Ft int .Fn copyinstr "const void *uaddr" "void *kaddr" "size_t len" "size_t *done" @@ -67,25 +73,40 @@ All but copy data from user-space to kernel-space or vice-versa. .Pp The -.Nm -routines provide the following functionality: -.Bl -tag -width "copyoutstr()" -.It Fn copyin -Copies +.Fn copyin +and +.Fn copyin_nofault +functions copy .Fa len bytes of data from the user-space address .Fa uaddr to the kernel-space address .Fa kaddr . -.It Fn copyout -Copies +.Pp +The +.Fn copyout +and +.Fn copyout_nofault +functions copy .Fa len bytes of data from the kernel-space address .Fa kaddr to the user-space address .Fa uaddr . -.It Fn copystr -Copies a NUL-terminated string, at most +.Pp +The +.Fn copyin_nofault +and +.Fn copyout_nofault +functions require that the kernel-space and user-space data be +accessible without incurring a page fault. +The source and destination addresses must be physically mapped for +read and write access, respectively, and neither the source nor +destination addresses may be pageable. +.Pp +The +.Fn copystr +function copies a NUL-terminated string, at most .Fa len bytes long, from kernel-space address .Fa kfaddr @@ -98,8 +119,10 @@ NUL, is returned in .Fa done is .No non- Ns Dv NULL ) . -.It Fn copyinstr -Copies a NUL-terminated string, at most +.Pp +The +.Fn copyinstr +function copies a NUL-terminated string, at most .Fa len bytes long, from user-space address .Fa uaddr @@ -121,7 +144,6 @@ is .\" The number of bytes actually copied, including the terminating .\" NUL, is returned in .\" .Fa *done . -.El .Sh RETURN VALUES The .Nm @@ -129,7 +151,13 @@ functions return 0 on success or .Er EFAULT if a bad address is encountered. In addition, the -.Fn copystr , +.Fn copyin_nofault +and +.Fn copyout_nofault +functions return +.Er EFAULT +if a page fault occurs, and the +.Fn copystr and .Fn copyinstr .\" .Fn copyinstr , diff --git a/share/man/man9/device_get_sysctl.9 b/share/man/man9/device_get_sysctl.9 index 4dcc2ab..d838ac7 100644 --- a/share/man/man9/device_get_sysctl.9 +++ b/share/man/man9/device_get_sysctl.9 @@ -28,7 +28,7 @@ .\" .\" $FreeBSD$ .\" -.Dd May 23, 2006 +.Dd June 18, 2011 .Dt DEVICE_GET_SYSCTL 9 .Os .Sh NAME @@ -49,7 +49,7 @@ This node can be accessed with the .Fn device_get_sysctl_tree function. The context for the node can be obtained with the -.Fn device_get_sysctl_ctl +.Fn device_get_sysctl_ctx function. .Sh SEE ALSO .Xr device 9 diff --git a/share/man/man9/fail.9 b/share/man/man9/fail.9 index e367eff..0973cea 100644 --- a/share/man/man9/fail.9 +++ b/share/man/man9/fail.9 @@ -116,6 +116,7 @@ The sysctl variable may be set using the following grammar: ( (<float> "%") | (<integer> "*" ) )* <type> [ "(" <integer> ")" ] + [ "[pid " <integer> "]" ] <float> :: <integer> [ "." <integer> ] | @@ -161,6 +162,10 @@ For the purpose of this operator, the return() and print() operators are the only types that cascade. A return() term only cascades if the code executes, and a print() term only cascades when passed a non-zero argument. +A pid can optionally be specified. +The fail point term is only executed when invoked by a process with a +matching p_pid. +.Pp .Sh EXAMPLES .Bl -tag .It Sy sysctl debug.fail_point.foobar="2.1%return(5)" @@ -181,6 +186,8 @@ After that, 1/1000th of the time, return 22. Return 5 for 1 in 1000 executions, but only 5 times total. .It Sy sysctl debug.fail_point.foobar="1%*sleep(50)" 1/100th of the time, sleep 50ms. +.It Sy sysctl debug.fail_point.foobar="1*return(5)[pid 1234]" +Return 5 once, when pid 1234 executes the fail point. .El .Sh AUTHORS .An -nosplit diff --git a/share/man/man9/ifnet.9 b/share/man/man9/ifnet.9 index e9dbab5..05264dc 100644 --- a/share/man/man9/ifnet.9 +++ b/share/man/man9/ifnet.9 @@ -28,7 +28,7 @@ .\" .\" $FreeBSD$ .\" -.Dd December 1, 2009 +.Dd July 3, 2011 .Dt IFNET 9 .Os .Sh NAME @@ -1169,11 +1169,12 @@ list. Caller must have appropriate privilege. (No call-down to driver.) .It Dv SIOCGIFCAP +.It Dv SIOCGIFFIB .It Dv SIOCGIFFLAGS .It Dv SIOCGIFMETRIC .It Dv SIOCGIFMTU .It Dv SIOCGIFPHYS -Get interface capabilities, flags, metric, MTU, medium selection. +Get interface capabilities, FIB, flags, metric, MTU, medium selection. (No call-down to driver.) .Pp .It Dv SIOCSIFCAP @@ -1192,6 +1193,12 @@ and .Va if_data.ifi_hwassist appropriately. .Pp +.It Dv SIOCSIFFIB +Sets interface FIB. +Caller must have appropriate privilege. +FIB values start at 0 and values greater or equals than +.Va net.fibs +are considered invalid. .It Dv SIOCSIFFLAGS Change interface flags. Caller must have appropriate privilege. diff --git a/share/man/man9/uio.9 b/share/man/man9/uio.9 index fb27c9c..9d569b7 100644 --- a/share/man/man9/uio.9 +++ b/share/man/man9/uio.9 @@ -25,12 +25,13 @@ .\" .\" $FreeBSD$ .\" -.Dd March 21, 2010 +.Dd July 9, 2011 .Dt UIO 9 .Os .Sh NAME .Nm uio , -.Nm uiomove +.Nm uiomove , +.Nm uiomove_nofault .Nd device driver I/O routines .Sh SYNOPSIS .In sys/types.h @@ -48,11 +49,15 @@ struct uio { .Ed .Ft int .Fn uiomove "void *buf" "int howmuch" "struct uio *uiop" +.Ft int +.Fn uiomove_nofault "void *buf" "int howmuch" "struct uio *uiop" .Sh DESCRIPTION -The function +The functions .Fn uiomove -is used to handle transfer of data between buffers and I/O vectors -that might possibly also cross the user/kernel space boundary. +and +.Fn uiomove_nofault +are used to transfer data between buffers and I/O vectors that might +possibly cross the user/kernel space boundary. .Pp As a result of any .Xr read 2 , @@ -71,6 +76,8 @@ being passed. The transfer request is encoded in this structure. The driver itself should use .Fn uiomove +or +.Fn uiomove_nofault to get at the data in this structure. .Pp The fields in the @@ -99,7 +106,7 @@ Do not copy, already in object. .El .It Va uio_rw The direction of the desired transfer, either -.Dv UIO_READ , +.Dv UIO_READ or .Dv UIO_WRITE . .It Va uio_td @@ -110,10 +117,24 @@ for the associated thread; used if indicates that the transfer is to be made from/to a process's address space. .El +.Pp +The function +.Fn uiomove_nofault +requires that the buffer and I/O vectors be accessible without +incurring a page fault. +The source and destination addresses must be physically mapped for +read and write access, respectively, and neither the source nor +destination addresses may be pageable. +Thus, the function +.Fn uiomove_nofault +can be called from contexts where acquiring virtual memory system +locks or sleeping are prohibited. .Sh RETURN VALUES On success .Fn uiomove -will return 0, on error it will return an appropriate errno. +and +.Fn uiomove_nofault +will return 0; on error they will return an appropriate error code. .Sh EXAMPLES The idea is that the driver maintains a private buffer for its data, and processes the request in chunks of maximal the size of this @@ -156,6 +177,8 @@ fooread(dev_t dev, struct uio *uio, int flag) .Ed .Sh ERRORS .Fn uiomove +and +.Fn uiomove_nofault will fail and return the following error code if: .Bl -tag -width Er .It Bq Er EFAULT @@ -166,6 +189,14 @@ or returned .Er EFAULT .El +.Pp +In addition, +.Fn uiomove_nofault +will fail and return the following error code if: +.Bl -tag -width Er +.It Bq Er EFAULT +A page fault occurs. +.El .Sh SEE ALSO .Xr read 2 , .Xr readv 2 , diff --git a/share/man/man9/vm_map.9 b/share/man/man9/vm_map.9 index 12112cd..f45be0b 100644 --- a/share/man/man9/vm_map.9 +++ b/share/man/man9/vm_map.9 @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd September 26, 2004 +.Dd July 9, 2011 .Dt VM_MAP 9 .Os .Sh NAME @@ -223,13 +223,9 @@ a user process's address space: .Bl -tag -width ".Va max_protection" .It Va protection Memory protection bits applied to this region. -These are identical to those defined for -.Xr vm_page_protect 9 . .It Va max_protection Mask for the memory protection bits which may be actually be applied to this region. -These are identical to those defined for -.Xr vm_page_protect 9 . .It Va inheritance Contains flags which specify how this entry should be treated during fork processing. @@ -328,7 +324,6 @@ is backed by a .Sh SEE ALSO .Xr pmap 9 , .Xr vm_map_check_protection 9 , -.Xr vm_map_clean 9 , .Xr vm_map_create 9 , .Xr vm_map_delete 9 , .Xr vm_map_entry_resize_free 9 , @@ -348,8 +343,8 @@ is backed by a .Xr vm_map_simplify_entry 9 , .Xr vm_map_stack 9 , .Xr vm_map_submap 9 , -.Xr vm_map_wire 9 , -.Xr vm_page_protect 9 +.Xr vm_map_sync 9 , +.Xr vm_map_wire 9 .Sh AUTHORS This manual page was written by .An Bruce M Simpson Aq bms@spc.org . diff --git a/share/man/man9/vm_map_clean.9 b/share/man/man9/vm_map_sync.9 index eeea5bc..0ee1219 100644 --- a/share/man/man9/vm_map_clean.9 +++ b/share/man/man9/vm_map_sync.9 @@ -25,24 +25,24 @@ .\" .\" $FreeBSD$ .\" -.Dd July 19, 2003 -.Dt VM_MAP_CLEAN 9 +.Dd July 9, 2011 +.Dt VM_MAP_SYNC 9 .Os .Sh NAME -.Nm vm_map_clean +.Nm vm_map_sync .Nd push dirty pages to their pager .Sh SYNOPSIS .In sys/param.h .In vm/vm.h .In vm/vm_map.h .Ft int -.Fo vm_map_clean +.Fo vm_map_sync .Fa "vm_map_t map" "vm_offset_t start" "vm_offset_t end" "boolean_t syncio" .Fa "boolean_t invalidate" .Fc .Sh DESCRIPTION The -.Fn vm_map_clean +.Fn vm_map_sync function forces any dirty cached pages in the range .Fa start to @@ -61,13 +61,9 @@ is TRUE, any cached pages are also freed. .Pp The range provided must be contiguous, it MUST NOT contain holes. The range provided MUST NOT contain any sub-map entries. -.Sh IMPLEMENTATION NOTES -This routine holds the -.Va Giant -lock to prevent multiple entry. .Sh RETURN VALUES The -.Fn vm_map_clean +.Fn vm_map_sync function returns .Dv KERN_SUCCESS if successful. diff --git a/share/man/man9/vm_page_copy.9 b/share/man/man9/vm_page_copy.9 deleted file mode 100644 index 3cf7304..0000000 --- a/share/man/man9/vm_page_copy.9 +++ /dev/null @@ -1,57 +0,0 @@ -.\" -.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice(s), this list of conditions and the following disclaimer as -.\" the first lines of this file unmodified other than the possible -.\" addition of one or more copyright notices. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice(s), this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" -.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY -.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -.\" DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY -.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH -.\" DAMAGE. -.\" -.\" $FreeBSD$ -.\" -.Dd July 17, 2001 -.Dt VM_PAGE_COPY 9 -.Os -.Sh NAME -.Nm vm_page_copy -.Nd "copy a page" -.Sh SYNOPSIS -.In sys/param.h -.In vm/vm.h -.In vm/vm_page.h -.Ft void -.Fn vm_page_copy "vm_page_t src_m" "vm_page_t dst_m" -.Sh DESCRIPTION -The -.Fn vm_page_copy -function copies the contents of -.Fa src_m -into -.Fa dst_m . -.Pp -The entire contents of -.Fa dst_m -are marked as valid. -.Pp -The actual copy is performed by -.Fn pmap_copy_page . -.Sh AUTHORS -This manual page was written by -.An Chad David Aq davidc@acns.ab.ca . diff --git a/share/man/man9/vm_page_protect.9 b/share/man/man9/vm_page_protect.9 deleted file mode 100644 index 8b4911d..0000000 --- a/share/man/man9/vm_page_protect.9 +++ /dev/null @@ -1,75 +0,0 @@ -.\" -.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice(s), this list of conditions and the following disclaimer as -.\" the first lines of this file unmodified other than the possible -.\" addition of one or more copyright notices. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice(s), this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" -.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY -.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -.\" DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY -.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH -.\" DAMAGE. -.\" -.\" $FreeBSD$ -.\" -.Dd July 14, 2001 -.Dt VM_PAGE_PROTECT 9 -.Os -.Sh NAME -.Nm vm_page_protect -.Nd "lower a page's protection" -.Sh SYNOPSIS -.In sys/param.h -.In vm/vm.h -.In vm/vm_page.h -.Ft void -.Fn vm_page_protect "vm_page_t mem" "int prot" -.Sh DESCRIPTION -The -.Fn vm_page_protect -function lowers a page's protection. -The protection is never raised by this function; therefore, if the page is -already at -.Dv VM_PROT_NONE , -the function does nothing. -.Pp -Its arguments are: -.Bl -tag -width ".Fa prot" -.It Fa mem -The page whose protection is lowered. -.It Fa prot -The protection the page should be reduced to. -If -.Dv VM_PROT_NONE -is specified, then the -.Dv PG_WRITABLE -and -.Dv PG_MAPPED -flags are cleared and the pmap_page's protection is set to -.Dv VM_PROT_NONE . -If -.Dv VM_PROT_READ -is specified, then the -.Dv PG_WRITABLE -flag is cleared and the pmap_page's protection is set to -.Dv VM_PROT_READ . -.El -.Pp -Higher protection requests are ignored. -.Sh AUTHORS -This manual page was written by -.An Chad David Aq davidc@acns.ab.ca . diff --git a/share/man/man9/vm_page_zero_fill.9 b/share/man/man9/vm_page_zero_fill.9 deleted file mode 100644 index 2adb301..0000000 --- a/share/man/man9/vm_page_zero_fill.9 +++ /dev/null @@ -1,53 +0,0 @@ -.\" -.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice(s), this list of conditions and the following disclaimer as -.\" the first lines of this file unmodified other than the possible -.\" addition of one or more copyright notices. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice(s), this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" -.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY -.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -.\" DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY -.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH -.\" DAMAGE. -.\" -.\" $FreeBSD$ -.\" -.Dd July 17, 2001 -.Dt VM_PAGE_ZERO_FILL 9 -.Os -.Sh NAME -.Nm vm_page_zero_fill -.Nd "zero fill a page" -.Sh SYNOPSIS -.In sys/param.h -.In vm/vm.h -.In vm/vm_page.h -.Ft boolean_t -.Fn vm_page_zero_fill "vm_page_t m" -.Sh DESCRIPTION -The -.Fn vm_page_zero_fill -function zeros the given vm page by calling the machine dependent -.Fn pmap_zero_page -routine. -.Pp -.Fn vm_page_zero_fill -always returns -.Dv TRUE . -.Sh AUTHORS -This manual page was written by -.An Chad David Aq davidc@acns.ab.ca . |
