Lines Matching +full:not +full:- +full:swapped
12 physical frame each virtual page is mapped to. It contains one 64-bit
16 * Bits 0-54 page frame number (PFN) if present
17 * Bits 0-4 swap type if swapped
18 * Bits 5-54 swap offset if swapped
19 * Bit 55 pte is soft-dirty (see
20 Documentation/admin-guide/mm/soft-dirty.rst)
22 * Bit 57 pte is uffd-wp write-protected (since 5.13) (see
23 Documentation/admin-guide/mm/userfaultfd.rst)
24 * Bits 58-60 zero
25 * Bit 61 page is file-page or shared-anon (since 3.5)
26 * Bit 62 page swapped
30 In 4.0 and 4.1 opens by unprivileged fail with -EPERM. Starting from
31 4.2 the PFN field is zeroed if the user does not have CAP_SYS_ADMIN.
34 If the page is not present but in swap, then the PFN contains an
44 * ``/proc/kpagecount``. This file contains a 64-bit count of the number of
47 The page-types tool in the tools/mm directory can be used to query the
50 * ``/proc/kpageflags``. This file contains a 64-bit set of flags for each
83 * ``/proc/kpagecgroup``. This file contains a 64-bit inode number of the
90 0 - LOCKED
93 7 - SLAB
97 10 - BUDDY
102 15 - COMPOUND_HEAD
106 pages are hugeTLB pages (Documentation/admin-guide/mm/hugetlbpage.rst),
110 16 - COMPOUND_TAIL
112 17 - HUGE
114 19 - HWPOISON
116 20 - NOPAGE
118 21 - KSM
120 22 - THP
122 23 - OFFLINE
124 24 - ZERO_PAGE
126 25 - IDLE
127 The page has not been accessed since it was marked idle (see
128 Documentation/admin-guide/mm/idle_page_tracking.rst).
130 a PTE. To make sure the flag is up-to-date one has to read
132 26 - PGTABLE
136 ---------------------
138 1 - ERROR
140 3 - UPTODATE
141 The page has up-to-date data.
142 ie. for file backed page: (in-memory data revision >= on-disk one)
143 4 - DIRTY
145 i.e. for file backed page: (in-memory data revision > on-disk one)
146 8 - WRITEBACK
150 ----------------------
152 5 - LRU
154 6 - ACTIVE
156 18 - UNEVICTABLE
157 The page is in the unevictable (non-)LRU list It is somehow pinned and
158 not a candidate for LRU page reclaims, e.g. ramfs pages,
160 2 - REFERENCED
162 9 - RECLAIM
164 11 - MMAP
166 12 - ANON
167 A memory mapped page that is not part of a file.
168 13 - SWAPCACHE
170 14 - SWAPBACKED
173 The page-types tool in the tools/mm directory can be used to query the
180 swapped out. This makes swapped out pages indistinguishable from never-allocated
185 page is swapped out (i.e. SOFT_DIRTY).
187 In user space, whether the page is present, swapped or none can be deduced with
190 lseek() can differentiate between accessed pages (present or swapped out) and
191 holes (none/non-allocated) by specifying the SEEK_DATA flag on the file where
196 cache) and out of memory (swapped out or none/non-allocated).
201 Reading from any of the files will return -EINVAL if you are not starting
202 the read on an 8-byte boundary (e.g., if you sought an odd number of bytes
203 into the file), or if the size of the read is not a multiple of 8 bytes.
205 Before Linux 3.11 pagemap bits 55-60 were used for "page-shift" (which is
207 after first clear of soft-dirty bits. Since Linux 4.2 they are used for
217 - Scan the address range and get the memory ranges matching the provided criteria.
219 - Write-protect the pages. The ``PM_SCAN_WP_MATCHING`` is used to write-protect
221 non-Async Write Protected pages are found. The ``PM_SCAN_WP_MATCHING`` can be
223 - Both of those operations can be combined into one atomic operation where we can
228 - ``PAGE_IS_WPALLOWED`` - Page has async-write-protection enabled
229 - ``PAGE_IS_WRITTEN`` - Page has been written to from the time it was write protected
230 - ``PAGE_IS_FILE`` - Page is file backed
231 - ``PAGE_IS_PRESENT`` - Page is present in the memory
232 - ``PAGE_IS_SWAPPED`` - Page is in swapped
233 - ``PAGE_IS_PFNZERO`` - Page has zero PFN
234 - ``PAGE_IS_HUGE`` - Page is PMD-mapped THP or Hugetlb backed
235 - ``PAGE_IS_SOFT_DIRTY`` - Page is soft-dirty
245 provided or not.
265 Find pages which have been written, are file backed, not swapped and either
279 The ``PAGE_IS_WRITTEN`` flag can be considered as a better-performing alternative
280 of soft-dirty flag. It doesn't get affected by VMA merging of the kernel and hence
281 the user can find the true soft-dirty pages in case of normal pages. (There may
284 "PAGE_IS_WRITTEN" category is used with uffd write protect-enabled ranges to