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invalidate_mapping_pages(): add cond_resched

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invalidate_mapping_pages() can sometimes take a long time (millions of pages
to free).  Long enough for the softlockup detector to trigger.

We used to have a cond_resched() in there but I took it out because the
drop_caches code calls invalidate_mapping_pages() under inode_lock.

The patch adds a nasty flag and puts the cond_resched() back.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrew Morton 2007-07-15 23:38:14 -07:00 • committed by Linus Torvalds
parent 45426812d6
commit fc9a07e7bf
3 changed files with 27 additions and 16 deletions
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3
include/linux/fs.h
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@ -1610,6 +1610,9 @@ extern int __invalidate_device(struct block_device *);
extern int invalidate_partition(struct gendisk *, int);
#endif
extern int invalidate_inodes(struct super_block *);
unsigned long __invalidate_mapping_pages(struct address_space *mapping,
pgoff_t start, pgoff_t end,
bool be_atomic);
unsigned long invalidate_mapping_pages(struct address_space *mapping,
pgoff_t start, pgoff_t end);