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authorNeilBrown <neilb@suse.de>2006-01-06 00:20:40 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:34:07 -0800
commit1345b1d8adbdeceb1c871d9a4af5e2a700b341c6 (patch)
tree0da1db7d273752ad5281db415e9245f3f3a63383 /include/linux/raid/md_k.h
parent7dd5d34c6c2da04e8cd0732e08b33cd3359e4bae (diff)
[PATCH] md: define and use safe_put_page for md
md sometimes call put_page on NULL pointers (treating it like kfree). This is not safe, so define and use a 'safe_put_page' which checks for NULL. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/raid/md_k.h')
-rw-r--r--include/linux/raid/md_k.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index e559fb701aa..12b3203e341 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -324,5 +324,10 @@ do { \
__wait_event_lock_irq(wq, condition, lock, cmd); \
} while (0)
+static inline void safe_put_page(struct page *p)
+{
+ if (p) put_page(p);
+}
+
#endif