From: Miklos Szeredi Date: Wed, 30 Apr 2008 07:54:38 +0000 (-0700) Subject: mm: Add NR_WRITEBACK_TEMP counter X-Git-Tag: v2.6.26-rc1~150 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fc3ba692a4d19019387c5acaea63131f9eab05dd;p=pandora-kernel.git mm: Add NR_WRITEBACK_TEMP counter Fuse will use temporary buffers to write back dirty data from memory mappings (normal writes are done synchronously). This is needed, because there cannot be any guarantee about the time in which a write will complete. By using temporary buffers, from the MM's point if view the page is written back immediately. If the writeout was due to memory pressure, this effectively migrates data from a full zone to a less full zone. This patch adds a new counter (NR_WRITEBACK_TEMP) for the number of pages used as temporary buffers. [Lee.Schermerhorn@hp.com: add vmstat_text for NR_WRITEBACK_TEMP] Signed-off-by: Miklos Szeredi Cc: Christoph Lameter Signed-off-by: Lee Schermerhorn Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed