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-rw-r--r--mm/truncate.c25
1 files changed, 0 insertions, 25 deletions
diff --git a/mm/truncate.c b/mm/truncate.c
index 61a183b..75801ac 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -602,31 +602,6 @@ int vmtruncate(struct inode *inode, loff_t newsize)
}
EXPORT_SYMBOL(vmtruncate);
-int vmtruncate_range(struct inode *inode, loff_t lstart, loff_t lend)
-{
- struct address_space *mapping = inode->i_mapping;
- loff_t holebegin = round_up(lstart, PAGE_SIZE);
- loff_t holelen = 1 + lend - holebegin;
-
- /*
- * If the underlying filesystem is not going to provide
- * a way to truncate a range of blocks (punch a hole) -
- * we should return failure right now.
- */
- if (!inode->i_op->truncate_range)
- return -ENOSYS;
-
- mutex_lock(&inode->i_mutex);
- inode_dio_wait(inode);
- unmap_mapping_range(mapping, holebegin, holelen, 1);
- inode->i_op->truncate_range(inode, lstart, lend);
- /* unmap again to remove racily COWed private pages */
- unmap_mapping_range(mapping, holebegin, holelen, 1);
- mutex_unlock(&inode->i_mutex);
-
- return 0;
-}
-
/**
* truncate_pagecache_range - unmap and remove pagecache that is hole-punched
* @inode: inode
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