diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2006-03-22 09:09:04 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 16:54:05 +0100 |
| commit | 248a0301e703cbf781aa02a91bcfc6da75870dd7 (patch) | |
| tree | 74168da24983ec948fb25f92c2b3a1b9d76a5f13 /mm | |
| parent | [PATCH] optimize follow_hugetlb_page (diff) | |
| download | linux-248a0301e703cbf781aa02a91bcfc6da75870dd7.tar.xz linux-248a0301e703cbf781aa02a91bcfc6da75870dd7.zip | |
[PATCH] mm: make shrink_all_memory try harder
Make shrink_all_memory() repeat the attempts to free more memory if there
seems to be no pages to free.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmscan.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index f713e9f6ac73..548e023c193b 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -33,6 +33,7 @@ #include <linux/cpuset.h> #include <linux/notifier.h> #include <linux/rwsem.h> +#include <linux/delay.h> #include <asm/tlbflush.h> #include <asm/div64.h> @@ -1784,11 +1785,13 @@ unsigned long shrink_all_memory(unsigned long nr_pages) pg_data_t *pgdat; unsigned long nr_to_free = nr_pages; unsigned long ret = 0; + unsigned retry = 2; struct reclaim_state reclaim_state = { .reclaimed_slab = 0, }; current->reclaim_state = &reclaim_state; +repeat: for_each_pgdat(pgdat) { unsigned long freed; @@ -1798,6 +1801,10 @@ unsigned long shrink_all_memory(unsigned long nr_pages) if ((long)nr_to_free <= 0) break; } + if (retry-- && ret < nr_pages) { + blk_congestion_wait(WRITE, HZ/5); + goto repeat; + } current->reclaim_state = NULL; return ret; } |