Commit 71ef0786 authored by Li Zefan's avatar Li Zefan Committed by Chris Mason

Btrfs: fix pages truncation in btrfs_ioctl_clone()

It's a bug in commit f81c9cdc
(Btrfs: truncate pages from clone ioctl target range)

We should pass the dest range to the truncate function, but not the
src range.

Also move the function before locking extent state.
Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 3765fefa
......@@ -2234,6 +2234,10 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
goto out_unlock;
}
/* truncate page cache pages from target inode range */
truncate_inode_pages_range(&inode->i_data, destoff,
PAGE_CACHE_ALIGN(destoff + len) - 1);
/* do any pending delalloc/csum calc on src, one way or
another, and lock file content */
while (1) {
......@@ -2250,10 +2254,6 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
btrfs_wait_ordered_range(src, off, len);
}
/* truncate page cache pages from target inode range */
truncate_inode_pages_range(&inode->i_data, off,
ALIGN(off + len, PAGE_CACHE_SIZE) - 1);
/* clone data */
key.objectid = btrfs_ino(src);
key.type = BTRFS_EXTENT_DATA_KEY;
......
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