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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
commit3d08cd331c1adcf0d917392f7e527b3f00511748 (patch)
tree312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man/man5/proc_kpageflags.5
parentAdding debian version 6.7-2. (diff)
downloadmanpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz
manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+'\" t
+.\" Copyright (C) 1994, 1995, Daniel Quinlan <quinlan@yggdrasil.com>
+.\" Copyright (C) 2002-2008, 2017, Michael Kerrisk <mtk.manpages@gmail.com>
+.\" Copyright (C) 2023, Alejandro Colomar <alx@kernel.org>
+.\"
+.\" SPDX-License-Identifier: GPL-3.0-or-later
+.\"
+.TH proc_kpageflags 5 2024-05-02 "Linux man-pages (unreleased)"
+.SH NAME
+/proc/kpageflags \- physical pages frame masks
+.SH DESCRIPTION
+.TP
+.IR /proc/kpageflags " (since Linux 2.6.25)"
+This file contains 64-bit masks corresponding to each physical page frame;
+it is indexed by page frame number (see the discussion of
+.IR /proc/ pid /pagemap ).
+The bits are as follows:
+.RS
+.IP
+.TS
+r l l l.
+0 - KPF_LOCKED
+1 - KPF_ERROR
+2 - KPF_REFERENCED
+3 - KPF_UPTODATE
+4 - KPF_DIRTY
+5 - KPF_LRU
+6 - KPF_ACTIVE
+7 - KPF_SLAB
+8 - KPF_WRITEBACK
+9 - KPF_RECLAIM
+10 - KPF_BUDDY
+11 - KPF_MMAP (since Linux 2.6.31)
+12 - KPF_ANON (since Linux 2.6.31)
+13 - KPF_SWAPCACHE (since Linux 2.6.31)
+14 - KPF_SWAPBACKED (since Linux 2.6.31)
+15 - KPF_COMPOUND_HEAD (since Linux 2.6.31)
+16 - KPF_COMPOUND_TAIL (since Linux 2.6.31)
+17 - KPF_HUGE (since Linux 2.6.31)
+18 - KPF_UNEVICTABLE (since Linux 2.6.31)
+19 - KPF_HWPOISON (since Linux 2.6.31)
+20 - KPF_NOPAGE (since Linux 2.6.31)
+21 - KPF_KSM (since Linux 2.6.32)
+22 - KPF_THP (since Linux 3.4)
+23 - KPF_BALLOON (since Linux 3.18)
+.\" KPF_BALLOON: commit 09316c09dde33aae14f34489d9e3d243ec0d5938
+24 - KPF_ZERO_PAGE (since Linux 4.0)
+.\" KPF_ZERO_PAGE: commit 56873f43abdcd574b25105867a990f067747b2f4
+25 - KPF_IDLE (since Linux 4.3)
+.\" KPF_IDLE: commit f074a8f49eb87cde95ac9d040ad5e7ea4f029738
+26 - KPF_PGTABLE (since Linux 4.18)
+.\" KPF_PGTABLE: commit 1d40a5ea01d53251c23c7be541d3f4a656cfc537
+.TE
+.RE
+.IP
+For further details on the meanings of these bits,
+see the kernel source file
+.IR Documentation/admin\-guide/mm/pagemap.rst .
+Before Linux 2.6.29,
+.\" commit ad3bdefe877afb47480418fdb05ecd42842de65e
+.\" commit e07a4b9217d1e97d2f3a62b6b070efdc61212110
+.BR KPF_WRITEBACK ,
+.BR KPF_RECLAIM ,
+.BR KPF_BUDDY ,
+and
+.B KPF_LOCKED
+did not report correctly.
+.IP
+The
+.I /proc/kpageflags
+file is present only if the
+.B CONFIG_PROC_PAGE_MONITOR
+kernel configuration option is enabled.
+.SH SEE ALSO
+.BR proc (5)