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jbd2: checking valid features early in journal_get_superblock() 

journal_get_superblock() is used to check validity of the jounal
supberblock, so move the features checks from jbd2_journal_load() to
journal_get_superblock().

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230811063610.2980059-5-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Zhang Yi 2023-08-11 14:36:02 +08:00 committed by Theodore Ts'o
parent 9600f3e5cf
commit e4adf8b837
1 changed files with 15 additions and 15 deletions
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30
fs/jbd2/journal.c
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@ -1398,6 +1398,21 @@ static int journal_get_superblock(journal_t *journal)
goto out;
}
/*
* If this is a V2 superblock, then we have to check the
* features flags on it.
*/
if (!jbd2_format_support_feature(journal))
return 0;
if ((sb->s_feature_ro_compat &
~cpu_to_be32(JBD2_KNOWN_ROCOMPAT_FEATURES)) ||
(sb->s_feature_incompat &
~cpu_to_be32(JBD2_KNOWN_INCOMPAT_FEATURES))) {
printk(KERN_WARNING "JBD2: Unrecognised features on journal\n");
goto out;
}
if (jbd2_has_feature_csum2(journal) &&
jbd2_has_feature_csum3(journal)) {
/* Can't have checksum v2 and v3 at the same time! */
@ -2059,21 +2074,6 @@ int jbd2_journal_load(journal_t *journal)
int err;
journal_superblock_t *sb = journal->j_superblock;
/*
* If this is a V2 superblock, then we have to check the
* features flags on it.
*/
if (jbd2_format_support_feature(journal)) {
if ((sb->s_feature_ro_compat &
~cpu_to_be32(JBD2_KNOWN_ROCOMPAT_FEATURES)) ||
(sb->s_feature_incompat &
~cpu_to_be32(JBD2_KNOWN_INCOMPAT_FEATURES))) {
printk(KERN_WARNING
"JBD2: Unrecognised features on journal\n");
return -EINVAL;
}
}
/*
* Create a slab for this blocksize
*/