From: Zhang Yi <[email protected]>
Implement zero_range iomap path, add ext4_iomap_zero_range() to zero
out the already mapped blocks, everything have been done in
iomap_zero_range(), so invoke it directly.
Signed-off-by: Zhang Yi <[email protected]>
---
fs/ext4/inode.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index dee661e64a69..f8e9f566ef6a 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4126,6 +4126,13 @@ static int __ext4_block_zero_page_range(handle_t *handle,
return err;
}
+static int ext4_iomap_zero_range(struct inode *inode,
+ loff_t from, loff_t length)
+{
+ return iomap_zero_range(inode, from, length, NULL,
+ &ext4_iomap_buffered_read_ops);
+}
+
/*
* ext4_block_zero_page_range() zeros out a mapping of length 'length'
* starting from file offset 'from'. The range to be zero'd must
@@ -4151,6 +4158,8 @@ static int ext4_block_zero_page_range(handle_t *handle,
if (IS_DAX(inode)) {
return dax_zero_range(inode, from, length, NULL,
&ext4_iomap_ops);
+ } else if (ext4_test_inode_state(inode, EXT4_STATE_BUFFERED_IOMAP)) {
+ return ext4_iomap_zero_range(inode, from, length);
}
return __ext4_block_zero_page_range(handle, mapping, from, length);
}
--
2.39.2