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ext4: add support for filesystems without JOURNAL

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JOURNAL is optional for EXT4 (and EXT3) filesystems, so add support for
skipping it. This fixes corrupting EXT4 volumes without JOURNAL after
using uboot's 'ext4write' command.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Marek Szyprowski
2019-06-21 15:35:35 +02:00
committed by Tom Rini
parent 1c9f8f6412
commit bd8fbd8a13
2 changed files with 6 additions and 0 deletions
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4
fs/ext4/ext4_journal.c
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@@ -645,6 +645,10 @@ void ext4fs_update_journal(void)
struct ext_filesystem *fs = get_fs();
long int blknr;
int i;
if (!(fs->sb->feature_compatibility & EXT4_FEATURE_COMPAT_HAS_JOURNAL))
return;
ext4fs_read_inode(ext4fs_root, EXT2_JOURNAL_INO, &inode_journal);
blknr = read_allocated_block(&inode_journal, jrnl_blk_idx++, NULL);
update_descriptor_block(blknr);