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-rw-r--r--include/linux/jbd2.h13
1 files changed, 9 insertions, 4 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index df07e78487d5..6da6f89722e1 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -1338,13 +1338,18 @@ static inline int tid_geq(tid_t x, tid_t y)
extern int jbd2_journal_blocks_per_page(struct inode *inode);
extern size_t journal_tag_bytes(journal_t *journal);
+static inline bool jbd2_journal_has_csum_v2or3_feature(journal_t *j)
+{
+ return JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2) ||
+ JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V3);
+}
+
static inline int jbd2_journal_has_csum_v2or3(journal_t *journal)
{
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2) ||
- JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3))
- return 1;
+ WARN_ON_ONCE(jbd2_journal_has_csum_v2or3_feature(journal) &&
+ journal->j_chksum_driver == NULL);
- return 0;
+ return journal->j_chksum_driver != NULL;
}
/*