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authorAaron Tomlin <atomlin@redhat.com>2014-01-29 14:05:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-29 16:22:39 -0800
commit8582cb96b0bfd6891766d8c30d759bf21aad3b4d (patch)
treee603a54867acf33e5424d71f34e891b8dbb4e1bf /mm
parent0368dfd01ae3b7647ef9b2f0525fdefd5e0d28e1 (diff)
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mm: document improved handling of swappiness==0
Prior to commit fe35004fbf9e ("mm: avoid swapping out with swappiness==0") setting swappiness to 0, reclaim code could still evict recently used user anonymous memory to swap even though there is a significant amount of RAM used for page cache. The behaviour of setting swappiness to 0 has since changed. When set, the reclaim code does not initiate swap until the amount of free pages and file-backed pages, is less than the high water mark in a zone. Let's update the documentation to reflect this. [akpm@linux-foundation.org: remove comma, per Randy] Signed-off-by: Aaron Tomlin <atomlin@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Bryn M. Reeves <bmr@redhat.com> Cc: Satoru Moriya <satoru.moriya@hds.com> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions
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