[PATCH] md: check return value of write_page, rather than ignore it
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index f197db2..9462fdd 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -350,8 +350,7 @@
if (!bitmap->mddev->degraded)
sb->events_cleared = cpu_to_le64(bitmap->mddev->events);
kunmap(bitmap->sb_page);
- write_page(bitmap->sb_page, 0);
- return 0;
+ return write_page(bitmap->sb_page, 0);
}
/* print out the bitmap file superblock */
@@ -735,7 +734,8 @@
spin_unlock_irqrestore(&bitmap->lock, flags);
if (attr & (BITMAP_PAGE_DIRTY | BITMAP_PAGE_NEEDWRITE))
- write_page(page, 0);
+ if (write_page(page, 0))
+ return 1;
}
if (wait) { /* if any writes were performed, we need to wait on them */
spin_lock_irq(&bitmap->write_lock);
@@ -950,7 +950,7 @@
if (get_page_attr(bitmap, lastpage) & BITMAP_PAGE_NEEDWRITE) {
clear_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE);
spin_unlock_irqrestore(&bitmap->lock, flags);
- write_page(lastpage, 0);
+ err = write_page(lastpage, 0);
} else {
set_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE);
spin_unlock_irqrestore(&bitmap->lock, flags);
@@ -998,7 +998,7 @@
if (get_page_attr(bitmap, lastpage) &BITMAP_PAGE_NEEDWRITE) {
clear_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE);
spin_unlock_irqrestore(&bitmap->lock, flags);
- write_page(lastpage, 0);
+ err = write_page(lastpage, 0);
} else {
set_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE);
spin_unlock_irqrestore(&bitmap->lock, flags);
@@ -1375,7 +1375,8 @@
spin_unlock_irqrestore(&bitmap->lock, flags);
memset(kmap(page), 0xff, PAGE_SIZE);
kunmap(page);
- write_page(page, 0);
+ if (write_page(page, 0))
+ return 1;
}
return 0;