From: Suparna Bhattacharya <suparna@in.ibm.com>
Safeguard to make sure we break out of pagevec_lookup_tag loop if we are
beyond the specified range.
Signed-off-by: Suparna Bhattacharya <suparna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/fs/mpage.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)
diff -puN fs/mpage.c~mpage-writepages-range-limit-fix fs/mpage.c
--- 25/fs/mpage.c~mpage-writepages-range-limit-fix 2004-08-01 17:26:25.901138440 -0700
+++ 25-akpm/fs/mpage.c 2004-08-01 17:26:25.904137984 -0700
@@ -654,7 +654,8 @@ mpage_writepages(struct address_space *m
scanned = 1;
}
retry:
- while (!done && (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
+ while (!done && (index <= end) &&
+ (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
PAGECACHE_TAG_DIRTY,
min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1))) {
unsigned i;
_