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authorTheodore Ts'o <tytso@mit.edu>2019-02-15 00:28:14 +0300
committerTheodore Ts'o <tytso@mit.edu>2019-02-15 00:28:14 +0300
commita58ca992661a4bc6a1dfa60e9d6f606e97784149 (patch)
tree5d8aaa6130161f42ef85a226beba4e22be0a340d /fs/jbd2/journal.c
parent538bcaa6261b77e71d37f5596c33127c1a3ec3f7 (diff)
downloadlinux-a58ca992661a4bc6a1dfa60e9d6f606e97784149.tar.xz
jbd2: fold jbd2_superblock_csum_{verify,set} into their callers
The functions jbd2_superblock_csum_verify() and jbd2_superblock_csum_set() only get called from one location, so to simplify things, fold them into their callers. Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2/journal.c')
-rw-r--r--fs/jbd2/journal.c36
1 files changed, 11 insertions, 25 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 67ac91b53050..382c030cc78b 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -142,22 +142,6 @@ static __be32 jbd2_superblock_csum(journal_t *j, journal_superblock_t *sb)
return cpu_to_be32(csum);
}
-static int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb)
-{
- if (!jbd2_journal_has_csum_v2or3(j))
- return 1;
-
- return sb->s_checksum == jbd2_superblock_csum(j, sb);
-}
-
-static void jbd2_superblock_csum_set(journal_t *j, journal_superblock_t *sb)
-{
- if (!jbd2_journal_has_csum_v2or3(j))
- return;
-
- sb->s_checksum = jbd2_superblock_csum(j, sb);
-}
-
/*
* Helper function used to manage commit timeouts
*/
@@ -1384,7 +1368,8 @@ static int jbd2_write_superblock(journal_t *journal, int write_flags)
clear_buffer_write_io_error(bh);
set_buffer_uptodate(bh);
}
- jbd2_superblock_csum_set(journal, sb);
+ if (jbd2_journal_has_csum_v2or3(journal))
+ sb->s_checksum = jbd2_superblock_csum(journal, sb);
get_bh(bh);
bh->b_end_io = end_buffer_write_sync;
ret = submit_bh(REQ_OP_WRITE, write_flags, bh);
@@ -1597,17 +1582,18 @@ static int journal_get_superblock(journal_t *journal)
}
}
- /* Check superblock checksum */
- if (!jbd2_superblock_csum_verify(journal, sb)) {
- printk(KERN_ERR "JBD2: journal checksum error\n");
- err = -EFSBADCRC;
- goto out;
- }
+ if (jbd2_journal_has_csum_v2or3(journal)) {
+ /* Check superblock checksum */
+ if (sb->s_checksum != jbd2_superblock_csum(journal, sb)) {
+ printk(KERN_ERR "JBD2: journal checksum error\n");
+ err = -EFSBADCRC;
+ goto out;
+ }
- /* Precompute checksum seed for all metadata */
- if (jbd2_journal_has_csum_v2or3(journal))
+ /* Precompute checksum seed for all metadata */
journal->j_csum_seed = jbd2_chksum(journal, ~0, sb->s_uuid,
sizeof(sb->s_uuid));
+ }
set_buffer_verified(bh);