ext4: add ext4_get_block_dax()

[mirror_ubuntu-eoan-kernel.git] / fs / ext4 / inode.c

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 5ebcc7683a5c18d015d181ead7c371487608843f..612fbcf76b5c4820ad6a18d7723f7e65db803d18 100644 (file)
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3021,6 +3021,17 @@ static int ext4_get_block_write_nolock(struct inode *inode, sector_t iblock,
                               EXT4_GET_BLOCKS_NO_LOCK);
 }
 
+int ext4_get_block_dax(struct inode *inode, sector_t iblock,
+                  struct buffer_head *bh_result, int create)
+{
+       int flags = EXT4_GET_BLOCKS_PRE_IO | EXT4_GET_BLOCKS_UNWRIT_EXT;
+       if (create)
+               flags |= EXT4_GET_BLOCKS_CREATE;
+       ext4_debug("ext4_get_block_dax: inode %lu, create flag %d\n",
+                  inode->i_ino, create);
+       return _ext4_get_block(inode, iblock, bh_result, flags);
+}
+
 static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
                            ssize_t size, void *private)
 {