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path: root/fs/xfs/xfs_reflink.c
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Diffstat (limited to 'fs/xfs/xfs_reflink.c')
-rw-r--r--fs/xfs/xfs_reflink.c33
1 files changed, 25 insertions, 8 deletions
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index da1a447bef51..f135748d8282 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -1241,6 +1241,26 @@ xfs_reflink_remap_unlock(
}
/*
+ * If we're reflinking to a point past the destination file's EOF, we must
+ * zero any speculative post-EOF preallocations that sit between the old EOF
+ * and the destination file offset.
+ */
+static int
+xfs_reflink_zero_posteof(
+ struct xfs_inode *ip,
+ loff_t pos)
+{
+ loff_t isize = i_size_read(VFS_I(ip));
+
+ if (pos <= isize)
+ return 0;
+
+ trace_xfs_zero_eof(ip, isize, pos - isize);
+ return iomap_zero_range(VFS_I(ip), isize, pos - isize, NULL,
+ &xfs_iomap_ops);
+}
+
+/*
* Prepare two files for range cloning. Upon a successful return both inodes
* will have the iolock and mmaplock held, the page cache of the out file
* will be truncated, and any leases on the out file will have been broken.
@@ -1292,15 +1312,12 @@ xfs_reflink_remap_prep(
goto out_unlock;
/*
- * Clear out post-eof preallocations because we don't have page cache
- * backing the delayed allocations and they'll never get freed on
- * their own.
+ * Zero existing post-eof speculative preallocations in the destination
+ * file.
*/
- if (xfs_can_free_eofblocks(dest, true)) {
- ret = xfs_free_eofblocks(dest);
- if (ret)
- goto out_unlock;
- }
+ ret = xfs_reflink_zero_posteof(dest, pos_out);
+ if (ret)
+ goto out_unlock;
/* Set flags and remap blocks. */
ret = xfs_reflink_set_inode_flag(src, dest);