ext4: remove initialized but not read variables

No real bugs found, just removed some dead code.

Found by gcc 4.6's new warnings.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

2 files changed, 2 insertions, 20 deletions

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index bc2ff5932769..f7bf15787d68 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1392,13 +1392,9 @@ int jbd2_journal_check_used_features (journal_t *journal, unsigned long compat,
 int jbd2_journal_check_available_features (journal_t *journal, unsigned long compat,
                                       unsigned long ro, unsigned long incompat)
 {
-        journal_superblock_t *sb;
-
         if (!compat && !ro && !incompat)
                 return 1;
 
-        sb = journal->j_superblock;
-
         /* We can support any known requested features iff the
          * superblock is in version 2.  Otherwise we fail to support any
          * extended sb features. */
@@ -1618,7 +1614,6 @@ int jbd2_journal_flush(journal_t *journal)
 
 int jbd2_journal_wipe(journal_t *journal, int write)
 {
-        journal_superblock_t *sb;
         int err = 0;
 
         J_ASSERT (!(journal->j_flags & JBD2_LOADED));
@@ -1627,8 +1622,6 @@ int jbd2_journal_wipe(journal_t *journal, int write)
         if (err)
                 return err;
 
-        sb = journal->j_superblock;
-
         if (!journal->j_tail)
                 goto no_recovery;
 
@@ -2202,8 +2195,6 @@ void jbd2_journal_init_jbd_inode(struct jbd2_inode *jinode, struct inode *inode)
 void jbd2_journal_release_jbd_inode(journal_t *journal,
                                     struct jbd2_inode *jinode)
 {
-        int writeout = 0;
-
         if (!journal)
                 return;
 restart:
@@ -2220,9 +2211,6 @@ restart:
                 goto restart;
         }
 
-        /* Do we need to wait for data writeback? */
-        if (journal->j_committing_transaction == jinode->i_transaction)
-                writeout = 1;
         if (jinode->i_transaction) {
                 list_del(&jinode->i_list);
                 jinode->i_transaction = NULL;
diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index 049281b7cb89..2bc4d5f116f1 100644
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -285,12 +285,10 @@ int jbd2_journal_recover(journal_t *journal)
 int jbd2_journal_skip_recovery(journal_t *journal)
 {
         int                     err;
-        journal_superblock_t *  sb;
 
         struct recovery_info    info;
 
         memset (&info, 0, sizeof(info));
-        sb = journal->j_superblock;
 
         err = do_one_pass(journal, &info, PASS_SCAN);
 
@@ -299,7 +297,8 @@ int jbd2_journal_skip_recovery(journal_t *journal)
                 ++journal->j_transaction_sequence;
         } else {
 #ifdef CONFIG_JBD2_DEBUG
-                int dropped = info.end_transaction - be32_to_cpu(sb->s_sequence);
+                int dropped = info.end_transaction - 
+                        be32_to_cpu(journal->j_superblock->s_sequence);
 #endif
                 jbd_debug(1,
                           "JBD: ignoring %d transaction%s from the journal.\n",
@@ -365,11 +364,6 @@ static int do_one_pass(journal_t *journal,
         int                     tag_bytes = journal_tag_bytes(journal);
         __u32                   crc32_sum = ~0; /* Transactional Checksums */
 
-        /* Precompute the maximum metadata descriptors in a descriptor block */
-        int                     MAX_BLOCKS_PER_DESC;
-        MAX_BLOCKS_PER_DESC = ((journal->j_blocksize-sizeof(journal_header_t))
-                               / tag_bytes);
-
         /*
          * First thing is to establish what we expect to find in the log
          * (in terms of transaction IDs), and where (in terms of log