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authorHugh Dickins <hughd@google.com>2011-06-27 19:18:01 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-06-27 21:00:12 -0400
commit5b8ba10198a109f8a02380648c5d29000caa9c55 (patch)
tree1e4328d86395baa3d429c0d9911b7d7e1272629d /mm/memory.c
parent4d258b25d947521c8b913154db61ec55198243f8 (diff)
mm: move vmtruncate_range to truncate.c
You would expect to find vmtruncate_range() next to vmtruncate() in mm/truncate.c: move it there. Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
-rw-r--r--mm/memory.c24
1 files changed, 0 insertions, 24 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 87d935333f0d..40b7531ee8ba 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2798,30 +2798,6 @@ void unmap_mapping_range(struct address_space *mapping,
2798} 2798}
2799EXPORT_SYMBOL(unmap_mapping_range); 2799EXPORT_SYMBOL(unmap_mapping_range);
2800 2800
2801int vmtruncate_range(struct inode *inode, loff_t offset, loff_t end)
2802{
2803 struct address_space *mapping = inode->i_mapping;
2804
2805 /*
2806 * If the underlying filesystem is not going to provide
2807 * a way to truncate a range of blocks (punch a hole) -
2808 * we should return failure right now.
2809 */
2810 if (!inode->i_op->truncate_range)
2811 return -ENOSYS;
2812
2813 mutex_lock(&inode->i_mutex);
2814 down_write(&inode->i_alloc_sem);
2815 unmap_mapping_range(mapping, offset, (end - offset), 1);
2816 truncate_inode_pages_range(mapping, offset, end);
2817 unmap_mapping_range(mapping, offset, (end - offset), 1);
2818 inode->i_op->truncate_range(inode, offset, end);
2819 up_write(&inode->i_alloc_sem);
2820 mutex_unlock(&inode->i_mutex);
2821
2822 return 0;
2823}
2824
2825/* 2801/*
2826 * We enter with non-exclusive mmap_sem (to exclude vma changes, 2802 * We enter with non-exclusive mmap_sem (to exclude vma changes,
2827 * but allow concurrent faults), and pte mapped but not yet locked. 2803 * but allow concurrent faults), and pte mapped but not yet locked.