jbd2: clean up two gcc -Wall warnings in recovery.c

Fix a signed vs unsigned and a void * pointer arithmetic warning.

This cleanup is also in e2fsprogs commit aec460db9a93 ("e2fsck: clean
up two gcc -Wall warnings in recovery.c").

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index ba979fc..8ca3527 100644 (file)
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -179,8 +179,8 @@ static int jbd2_descriptor_block_csum_verify(journal_t *j, void *buf)
        if (!jbd2_journal_has_csum_v2or3(j))
                return 1;
 
-       tail = (struct jbd2_journal_block_tail *)(buf + j->j_blocksize -
-                       sizeof(struct jbd2_journal_block_tail));
+       tail = (struct jbd2_journal_block_tail *)((char *)buf +
+               j->j_blocksize - sizeof(struct jbd2_journal_block_tail));
        provided = tail->t_checksum;
        tail->t_checksum = 0;
        calculated = jbd2_chksum(j, j->j_csum_seed, buf, j->j_blocksize);
@@ -896,7 +896,7 @@ static int scan_revoke_records(journal_t *journal, struct buffer_head *bh,
 {
        jbd2_journal_revoke_header_t *header;
        int offset, max;
-       int csum_size = 0;
+       unsigned csum_size = 0;
        __u32 rcount;
        int record_len = 4;