Hi Andrew, After merging the akpm tree, today's linux-next build (powerpc ppc64_defconfig) failed like this:
fs/block_dev.c: In function 'set_blocksize':
fs/block_dev.c:135:2: error: implicit declaration of function 'prio_tree_empty'
[-Werror=implicit-function-declaration]
Caused by commit b87570f5d349 ("Fix a crash when block device is read and
block size is changed at the same time") from the block tree interacting
with commit "prio_tree: remove" from the akpm tree.
I added the following merge fix patch for today.
From: Stephen Rothwell <s...@canb.auug.org.au>
Date: Fri, 28 Sep 2012 16:21:10 +1000
Subject: [PATCH] prio_tree: fix fs/block_dev.c for removal of prio_tree
Signed-off-by: Stephen Rothwell <s...@canb.auug.org.au>
---
fs/block_dev.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 246a81e..165b01f 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -27,6 +27,7 @@
#include <linux/namei.h>
#include <linux/log2.h>
#include <linux/cleancache.h>
+#include <linux/rbtree.h>
#include <asm/uaccess.h>
#include "internal.h"
@@ -132,7 +133,7 @@ int set_blocksize(struct block_device *bdev, int size)
/* Check that the block device is not memory mapped */
mapping = bdev->bd_inode->i_mapping;
mutex_lock(&mapping->i_mmap_mutex);
- if (!prio_tree_empty(&mapping->i_mmap) ||
+ if (!RB_EMPTY_ROOT(&mapping->i_mmap) ||
!list_empty(&mapping->i_mmap_nonlinear)) {
mutex_unlock(&mapping->i_mmap_mutex);
percpu_up_write(&bdev->bd_block_size_semaphore);
--
1.7.10.280.gaa39
--
Cheers,
Stephen Rothwell s...@canb.auug.org.au
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