ext4_iomap_overwrite_begin() clears the flag for IOMAP_WRITE before
calling ext4_iomap_begin(). Document this above ext4_map_blocks() call
as it is easy to miss it when focusing on write paths alone.
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
---
fs/ext4/inode.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 94c7d2d828a6..b10e5cd5bb5c 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3436,6 +3436,10 @@ static int ext4_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
}
ret = ext4_iomap_alloc(inode, &map, flags);
} else {
+ /*
+ * This can be called for overwrites path from
+ * ext4_iomap_overwrite_begin().
+ */
ret = ext4_map_blocks(NULL, inode, &map, 0);
}
--
2.49.0
