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authorRik van Riel <riel@redhat.com>2008-10-18 23:26:32 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 11:50:25 -0400
commit4f98a2fee8acdb4ac84545df98cccecfd130f8db (patch)
tree035a2937f4c3e2f7b4269412041c073ac646937c /fs/cifs
parentb2e185384f534781fd22f5ce170b2ad26f97df70 (diff)
vmscan: split LRU lists into anon & file sets
Split the LRU lists in two, one set for pages that are backed by real file systems ("file") and one for pages that are backed by memory and swap ("anon"). The latter includes tmpfs. The advantage of doing this is that the VM will not have to scan over lots of anonymous pages (which we generally do not want to swap out), just to find the page cache pages that it should evict. This patch has the infrastructure and a basic policy to balance how much we scan the anon lists and how much we scan the file lists. The big policy changes are in separate patches. [lee.schermerhorn@hp.com: collect lru meminfo statistics from correct offset] [kosaki.motohiro@jp.fujitsu.com: prevent incorrect oom under split_lru] [kosaki.motohiro@jp.fujitsu.com: fix pagevec_move_tail() doesn't treat unevictable page] [hugh@veritas.com: memcg swapbacked pages active] [hugh@veritas.com: splitlru: BDI_CAP_SWAP_BACKED] [akpm@linux-foundation.org: fix /proc/vmstat units] [nishimura@mxp.nes.nec.co.jp: memcg: fix handling of shmem migration] [kosaki.motohiro@jp.fujitsu.com: adjust Quicklists field of /proc/meminfo] [kosaki.motohiro@jp.fujitsu.com: fix style issue of get_scan_ratio()] Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/file.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index c4a8a0605125..62d8bd8f14c0 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1791,7 +1791,7 @@ static void cifs_copy_cache_pages(struct address_space *mapping,
1791 SetPageUptodate(page); 1791 SetPageUptodate(page);
1792 unlock_page(page); 1792 unlock_page(page);
1793 if (!pagevec_add(plru_pvec, page)) 1793 if (!pagevec_add(plru_pvec, page))
1794 __pagevec_lru_add(plru_pvec); 1794 __pagevec_lru_add_file(plru_pvec);
1795 data += PAGE_CACHE_SIZE; 1795 data += PAGE_CACHE_SIZE;
1796 } 1796 }
1797 return; 1797 return;
@@ -1925,7 +1925,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
1925 bytes_read = 0; 1925 bytes_read = 0;
1926 } 1926 }
1927 1927
1928 pagevec_lru_add(&lru_pvec); 1928 pagevec_lru_add_file(&lru_pvec);
1929 1929
1930/* need to free smb_read_data buf before exit */ 1930/* need to free smb_read_data buf before exit */
1931 if (smb_read_data) { 1931 if (smb_read_data) {