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authorJan Kara <jack@suse.cz>2016-02-22 23:19:09 -0500
committerTheodore Ts'o <tytso@mit.edu>2016-02-22 23:19:09 -0500
commit1101cd4d13ba2f42c5da4c1b9081f35a73b5df31 (patch)
treec7808f5f15396fba6e5e3e68209bbe4bf4cd073f /fs/jbd2/revoke.c
parent32ab671599a89534f37e97d146c27690e371b661 (diff)
jbd2: unify revoke and tag block checksum handling
Revoke and tag descriptor blocks are just different kinds of descriptor blocks and thus have checksum in the same place. Unify computation and checking of checksums for these. Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2/revoke.c')
-rw-r--r--fs/jbd2/revoke.c19
1 files changed, 2 insertions, 17 deletions
diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index d1ebb1d41d17..91171dc352cb 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -583,7 +583,7 @@ static void write_one_revoke_record(transaction_t *transaction,
/* Do we need to leave space at the end for a checksum? */
if (jbd2_journal_has_csum_v2or3(journal))
- csum_size = sizeof(struct jbd2_journal_revoke_tail);
+ csum_size = sizeof(struct jbd2_journal_block_tail);
if (jbd2_has_feature_64bit(journal))
sz = 8;
@@ -623,21 +623,6 @@ static void write_one_revoke_record(transaction_t *transaction,
*offsetp = offset;
}
-static void jbd2_revoke_csum_set(journal_t *j, struct buffer_head *bh)
-{
- struct jbd2_journal_revoke_tail *tail;
- __u32 csum;
-
- if (!jbd2_journal_has_csum_v2or3(j))
- return;
-
- tail = (struct jbd2_journal_revoke_tail *)(bh->b_data + j->j_blocksize -
- sizeof(struct jbd2_journal_revoke_tail));
- tail->r_checksum = 0;
- csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize);
- tail->r_checksum = cpu_to_be32(csum);
-}
-
/*
* Flush a revoke descriptor out to the journal. If we are aborting,
* this is a noop; otherwise we are generating a buffer which needs to
@@ -658,7 +643,7 @@ static void flush_descriptor(journal_t *journal,
header = (jbd2_journal_revoke_header_t *)descriptor->b_data;
header->r_count = cpu_to_be32(offset);
- jbd2_revoke_csum_set(journal, descriptor);
+ jbd2_descriptor_block_csum_set(journal, descriptor);
set_buffer_jwrite(descriptor);
BUFFER_TRACE(descriptor, "write");