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Add loader for internal journal (we need to update mkfs to support this)

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For internal journal we need enhance mkfs to use ext2fs lib, that will
allow us to create journal (with proper header).
This commit is contained in:
Azat Khuzhin 2014-09-17 18:55:11 +04:00
parent bd1188801c
commit fd1dc7a951
1 changed files with 24 additions and 0 deletions
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24
simple.c
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@ -737,6 +737,24 @@ static int simplefs_load_journal(struct super_block *sb, int devnum)
return 0;
}
static int simplefs_sb_load_journal(struct super_block *sb)
{
struct journal_s *journal;
struct simplefs_super_block *sfs_sb = SIMPLEFS_SB(sb);
struct inode *journal_inode;
journal_inode = simplefs_iget(sb, SIMPLEFS_JOURNAL_INODE_NUMBER);
journal = jbd2_journal_init_inode(journal_inode);
if (!journal) {
printk(KERN_ERR "Can't load journal\n");
return 1;
}
journal->j_private = sb;
sfs_sb->journal = journal;
return 0;
}
#define SIMPLEFS_OPT_JOURNAL_DEV 1
static const match_table_t tokens = {
@ -797,6 +815,8 @@ int simplefs_fill_super(struct super_block *sb, void *data, int silent)
"simplefs seem to be formatted using a non-standard block size.");
goto release;
}
/** XXX: Avoid this hack, by adding one more sb wrapper, but non-disk */
sb_disk->journal = NULL;
printk(KERN_INFO
"simplefs filesystem of version [%llu] formatted with a block size of [%llu] detected in the device.\n",
@ -840,6 +860,10 @@ int simplefs_fill_super(struct super_block *sb, void *data, int silent)
if ((ret = simplefs_parse_options(sb, data)))
goto release;
if (!sb_disk->journal && (ret = simplefs_sb_load_journal(sb))) {
goto release;
}
ret = 0;
release:
brelse(bh);