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Commit b88473f7 authored by Miklos Szeredi's avatar Miklos Szeredi Committed by Linus Torvalds
Browse files

mm: document missing fields for /proc/meminfo 



A few fields in /proc/meminfo were not documented.  Fix.

Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent fc3ba692

Documentation/filesystems/proc.txt

+17 −4
Original line number Original line Diff line number Diff line
@@ -463,11 +463,17 @@ SwapTotal: 0 kB 
SwapFree:            0 kB

SwapFree:            0 kB

Dirty:             968 kB

Dirty:             968 kB

Writeback:           0 kB

Writeback:           0 kB

AnonPages:      861800 kB

Mapped:         280372 kB

Mapped:         280372 kB

Slab:           684068 kB

Slab:           284364 kB

SReclaimable:   159856 kB

SUnreclaim:     124508 kB

PageTables:      24448 kB

NFS_Unstable:        0 kB

Bounce:              0 kB

WritebackTmp:        0 kB

CommitLimit:   7669796 kB

CommitLimit:   7669796 kB

Committed_AS:   100056 kB

Committed_AS:   100056 kB

PageTables:      24448 kB

VmallocTotal:   112216 kB

VmallocTotal:   112216 kB

VmallocUsed:       428 kB

VmallocUsed:       428 kB

VmallocChunk:   111088 kB

VmallocChunk:   111088 kB
@@ -503,8 +509,17 @@ VmallocChunk: 111088 kB 
              on the disk

              on the disk

       Dirty: Memory which is waiting to get written back to the disk

       Dirty: Memory which is waiting to get written back to the disk

   Writeback: Memory which is actively being written back to the disk

   Writeback: Memory which is actively being written back to the disk

   AnonPages: Non-file backed pages mapped into userspace page tables

      Mapped: files which have been mmaped, such as libraries

      Mapped: files which have been mmaped, such as libraries

        Slab: in-kernel data structures cache

        Slab: in-kernel data structures cache

SReclaimable: Part of Slab, that might be reclaimed, such as caches

  SUnreclaim: Part of Slab, that cannot be reclaimed on memory pressure

  PageTables: amount of memory dedicated to the lowest level of page

              tables.

NFS_Unstable: NFS pages sent to the server, but not yet committed to stable

	      storage

      Bounce: Memory used for block device "bounce buffers"

WritebackTmp: Memory used by FUSE for temporary writeback buffers

 CommitLimit: Based on the overcommit ratio ('vm.overcommit_ratio'),

 CommitLimit: Based on the overcommit ratio ('vm.overcommit_ratio'),

              this is the total amount of  memory currently available to

              this is the total amount of  memory currently available to

              be allocated on the system. This limit is only adhered to

              be allocated on the system. This limit is only adhered to
@@ -531,8 +546,6 @@ Committed_AS: The amount of memory presently allocated on the system. 
              above) will not be permitted. This is useful if one needs

              above) will not be permitted. This is useful if one needs

              to guarantee that processes will not fail due to lack of

              to guarantee that processes will not fail due to lack of

              memory once that memory has been successfully allocated.

              memory once that memory has been successfully allocated.

  PageTables: amount of memory dedicated to the lowest level of page

              tables.

VmallocTotal: total size of vmalloc memory area

VmallocTotal: total size of vmalloc memory area

 VmallocUsed: amount of vmalloc area which is used

 VmallocUsed: amount of vmalloc area which is used

VmallocChunk: largest contigious block of vmalloc area which is free

VmallocChunk: largest contigious block of vmalloc area which is free