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| author | Mike Rapoport <rppt@linux.vnet.ibm.com> | 2018-04-18 10:07:46 +0200 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2018-04-28 01:02:37 +0200 |
| commit | 86207d9a90c27acc15e99f1148ce4f873882ea1a (patch) | |
| tree | 2833a881d3c21976359e101d145aa4930485b907 /Documentation/vm/pagemap.rst | |
| parent | docs/vm: hugetlbpage: move section about kernel development to hugetlbfs_reserv (diff) | |
| download | linux-86207d9a90c27acc15e99f1148ce4f873882ea1a.tar.xz linux-86207d9a90c27acc15e99f1148ce4f873882ea1a.zip | |
docs/vm: pagemap: formatting and spelling updates
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to '')
| -rw-r--r-- | Documentation/vm/pagemap.rst | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/vm/pagemap.rst b/Documentation/vm/pagemap.rst index d54b4bfd3043..9644bc0d6289 100644 --- a/Documentation/vm/pagemap.rst +++ b/Documentation/vm/pagemap.rst @@ -13,7 +13,7 @@ There are four components to pagemap: * ``/proc/pid/pagemap``. This file lets a userspace process find out which physical frame each virtual page is mapped to. It contains one 64-bit value for each virtual page, containing the following data (from - fs/proc/task_mmu.c, above pagemap_read): + ``fs/proc/task_mmu.c``, above pagemap_read): * Bits 0-54 page frame number (PFN) if present * Bits 0-4 swap type if swapped @@ -36,7 +36,7 @@ There are four components to pagemap: precisely which pages are mapped (or in swap) and comparing mapped pages between processes. - Efficient users of this interface will use /proc/pid/maps to + Efficient users of this interface will use ``/proc/pid/maps`` to determine which areas of memory are actually mapped and llseek to skip over unmapped regions. @@ -79,11 +79,11 @@ There are four components to pagemap: memory cgroup each page is charged to, indexed by PFN. Only available when CONFIG_MEMCG is set. -Short descriptions to the page flags: -===================================== +Short descriptions to the page flags +==================================== 0 - LOCKED - page is being locked for exclusive access, eg. by undergoing read/write IO + page is being locked for exclusive access, e.g. by undergoing read/write IO 7 - SLAB page is managed by the SLAB/SLOB/SLUB/SLQB kernel memory allocator When compound page is used, SLUB/SLQB will only set this flag on the head @@ -132,7 +132,7 @@ IO related page flags ie. for file backed page: (in-memory data revision >= on-disk one) 4 - DIRTY page has been written to, hence contains new data - ie. for file backed page: (in-memory data revision > on-disk one) + i.e. for file backed page: (in-memory data revision > on-disk one) 8 - WRITEBACK page is being synced to disk @@ -145,7 +145,7 @@ LRU related page flags page is in the active LRU list 18 - UNEVICTABLE page is in the unevictable (non-)LRU list It is somehow pinned and - not a candidate for LRU page reclaims, eg. ramfs pages, + not a candidate for LRU page reclaims, e.g. ramfs pages, shmctl(SHM_LOCK) and mlock() memory segments 2 - REFERENCED page has been referenced since last LRU list enqueue/requeue @@ -156,7 +156,7 @@ LRU related page flags 12 - ANON a memory mapped page that is not part of a file 13 - SWAPCACHE - page is mapped to swap space, ie. has an associated swap entry + page is mapped to swap space, i.e. has an associated swap entry 14 - SWAPBACKED page is backed by swap/RAM |