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authorAndrew Morton <akpm@linux-foundation.org>2007-02-28 23:13:21 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-03-01 17:53:38 -0500
commit232ea4d69d81169453344b7d05203425c88d973b (patch)
tree00799a50022f97a93c0e7524752b817399955851 /include/linux/writeback.h
parentb1a316f6f9c54d668df4304ddf935595501ccb25 (diff)
[PATCH] throttle_vm_writeout(): don't loop on GFP_NOFS and GFP_NOIO allocations
throttle_vm_writeout() is designed to wait for the dirty levels to subside. But if the caller holds IO or FS locks, we might be holding up that writeout. So change it to take a single nap to give other devices a chance to clean some memory, then return. Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/writeback.h')
-rw-r--r--include/linux/writeback.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index fc35e6bdfb93..0c78f7f4a976 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -84,7 +84,7 @@ static inline void wait_on_inode(struct inode *inode)
84int wakeup_pdflush(long nr_pages); 84int wakeup_pdflush(long nr_pages);
85void laptop_io_completion(void); 85void laptop_io_completion(void);
86void laptop_sync_completion(void); 86void laptop_sync_completion(void);
87void throttle_vm_writeout(void); 87void throttle_vm_writeout(gfp_t gfp_mask);
88 88
89/* These are exported to sysctl. */ 89/* These are exported to sysctl. */
90extern int dirty_background_ratio; 90extern int dirty_background_ratio;