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jbd2: sparse pointer use of zero as null

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Get rid of sparse related warnings from places that use integer as NULL
pointer.  (Ported from upstream ext3/jbd changes.)

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Mingming Cao 2008-01-28 23:58:27 -05:00 committed by Theodore Ts'o
parent db857da336
commit 4019191be7
1 changed files with 6 additions and 6 deletions
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12
fs/jbd2/transaction.c
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@ -1182,7 +1182,7 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
}
/* That test should have eliminated the following case: */
J_ASSERT_JH(jh, jh->b_frozen_data == 0);
J_ASSERT_JH(jh, jh->b_frozen_data == NULL);
JBUFFER_TRACE(jh, "file as BJ_Metadata");
spin_lock(&journal->j_list_lock);
@ -1532,7 +1532,7 @@ void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh)
J_ASSERT_JH(jh, jh->b_jlist < BJ_Types);
if (jh->b_jlist != BJ_None)
J_ASSERT_JH(jh, transaction != 0);
J_ASSERT_JH(jh, transaction != NULL);
switch (jh->b_jlist) {
case BJ_None:
@ -1601,11 +1601,11 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh)
if (buffer_locked(bh) || buffer_dirty(bh))
goto out;
if (jh->b_next_transaction != 0)
if (jh->b_next_transaction != NULL)
goto out;
spin_lock(&journal->j_list_lock);
if (jh->b_transaction != 0 && jh->b_cp_transaction == 0) {
if (jh->b_transaction != NULL && jh->b_cp_transaction == NULL) {
if (jh->b_jlist == BJ_SyncData || jh->b_jlist == BJ_Locked) {
/* A written-back ordered data buffer */
JBUFFER_TRACE(jh, "release data");
@ -1613,7 +1613,7 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh)
jbd2_journal_remove_journal_head(bh);
__brelse(bh);
}
} else if (jh->b_cp_transaction != 0 && jh->b_transaction == 0) {
} else if (jh->b_cp_transaction != NULL && jh->b_transaction == NULL) {
/* written-back checkpointed metadata buffer */
if (jh->b_jlist == BJ_None) {
JBUFFER_TRACE(jh, "remove from checkpoint list");
@ -1973,7 +1973,7 @@ void __jbd2_journal_file_buffer(struct journal_head *jh,
J_ASSERT_JH(jh, jh->b_jlist < BJ_Types);
J_ASSERT_JH(jh, jh->b_transaction == transaction ||
jh->b_transaction == 0);
jh->b_transaction == NULL);
if (jh->b_transaction && jh->b_jlist == jlist)
return;