Hello all,
I sent this to linux-mm, but haven't gotten a response - hope it's OK to
send here. I believe the set_page_count() macro is broken, and should
have parentheses around the 'v' in the second argument (otherwise more
complex arguments will break). Here is a patch to 2.6.15 - I haven't
really tested it, but it looks simple enough. Any objections? Anything
else I need to do?
Thanks,
Avishay Traeger
http://www.fsl.cs.sunysb.edu/~avishay/
diff -Naur linux-2.6.15/include/linux/mm.h
linux-2.6.15-mod/include/linux/mm.h
--- linux-2.6.15/include/linux/mm.h 2006-01-02 22:21:10.000000000
-0500
+++ linux-2.6.15-mod/include/linux/mm.h 2006-01-03 11:28:19.000000000
-0500
@@ -308,7 +308,7 @@
*/
#define get_page_testone(p) atomic_inc_and_test(&(p)->_count)
-#define set_page_count(p,v) atomic_set(&(p)->_count, v - 1)
+#define set_page_count(p,v) atomic_set(&(p)->_count, (v) - 1)
#define __put_page(p) atomic_dec(&(p)->_count)
extern void FASTCALL(__page_cache_release(struct page *));
-
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