The patch titled
remove generic__raw_read_trylock()
has been added to the -mm tree. Its filename is
remove-generic__raw_read_trylock.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: remove generic__raw_read_trylock()
From: Matthew Wilcox <matthew@xxxxxx>
If the cpu has the lock held for write, is interrupted, and the interrupt
handler calls read_trylock(), it's an instant deadlock.
Now, Dave Miller has subsequently pointed out that we don't have any
situations where this can occur. Nevertheless, we should delete
generic__raw_read_lock (and its associated EXPORT to make Arjan happy) so that
nobody thinks they can use it.
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/spinlock.c | 11 -----------
1 file changed, 11 deletions(-)
diff -puN kernel/spinlock.c~remove-generic__raw_read_trylock kernel/spinlock.c
--- a/kernel/spinlock.c~remove-generic__raw_read_trylock
+++ a/kernel/spinlock.c
@@ -21,17 +21,6 @@
#include <linux/debug_locks.h>
#include <linux/module.h>
-/*
- * Generic declaration of the raw read_trylock() function,
- * architectures are supposed to optimize this:
- */
-int __lockfunc generic__raw_read_trylock(raw_rwlock_t *lock)
-{
- __raw_read_lock(lock);
- return 1;
-}
-EXPORT_SYMBOL(generic__raw_read_trylock);
-
int __lockfunc _spin_trylock(spinlock_t *lock)
{
preempt_disable();
_
Patches currently in -mm which might be from matthew@xxxxxx are
origin.patch
git-parisc.patch
m32r-revise-__raw_read_trylock.patch
superh-list-is-moderated.patch
remove-generic__raw_read_trylock.patch
make-sure-nobodys-leaking-resources.patch
-
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