shithub: lwext4

Download patch

ref: 06c35f48e36de717fd16e720705cdbbfac3a842a
parent: 9e8466622a31fed8113e9a01969f01a850f92cea
author: gkostka <kostka.grzegorz@gmail.com>
date: Mon Dec 7 16:52:22 EST 2015 

Add ph_blk_offset during every blockdev bread/bwrite


--- a/lwext4/ext4_blockdev.c
+++ b/lwext4/ext4_blockdev.c
@@ -212,6 +212,7 @@
 	ext4_assert(bdev && buf);
 
 	pba = (lba * bdev->lg_bsize) / bdev->bdif->ph_bsize;
+	pba += bdev->ph_blk_offset;
 	pb_cnt = bdev->lg_bsize / bdev->bdif->ph_bsize;
 
 	bdev->bread_ctr++;
@@ -227,6 +228,7 @@
 	ext4_assert(bdev && buf);
 
 	pba = (lba * bdev->lg_bsize) / bdev->bdif->ph_bsize;
+	pba += bdev->ph_blk_offset;
 	pb_cnt = bdev->lg_bsize / bdev->bdif->ph_bsize;
 
 	bdev->bwrite_ctr++;
@@ -250,7 +252,7 @@
 	if (!(bdev->bdif->ph_flags & EXT4_BDEV_INITIALIZED))
 		return EIO;
 
-	block_idx = off / bdev->bdif->ph_bsize;
+	block_idx = (off / bdev->bdif->ph_bsize) + bdev->ph_blk_offset;
 	block_end = block_idx + len / bdev->bdif->ph_bsize;
 
 	if (!(block_end < bdev->bdif->ph_bcnt))
@@ -322,7 +324,7 @@
 	if (!(bdev->bdif->ph_flags & EXT4_BDEV_INITIALIZED))
 		return EIO;
 
-	block_idx = off / bdev->bdif->ph_bsize;
+	block_idx = (off / bdev->bdif->ph_bsize) + bdev->ph_blk_offset;
 	block_end = block_idx + len / bdev->bdif->ph_bsize;
 
 	if (!(block_end < bdev->bdif->ph_bcnt))