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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.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Cc: Andi Kleen <ak@suse.de>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Ian Kent <raven@themaw.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Stephen Hemminger
2007-10-18 03:07:05 -07:00
committed by Linus Torvalds
parent 0e9663ee45
commit c80544dc0b
20 changed files with 34 additions and 33 deletions
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9
fs/jbd/journal.c
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@@ -217,7 +217,7 @@ static int journal_start_thread(journal_t *journal)
if (IS_ERR(t))
return PTR_ERR(t);
wait_event(journal->j_wait_done_commit, journal->j_task != 0);
wait_event(journal->j_wait_done_commit, journal->j_task != NULL);
return 0;
}
@@ -229,7 +229,8 @@ static void journal_kill_thread(journal_t *journal)
while (journal->j_task) {
wake_up(&journal->j_wait_commit);
spin_unlock(&journal->j_state_lock);
wait_event(journal->j_wait_done_commit, journal->j_task == 0);
wait_event(journal->j_wait_done_commit,
journal->j_task == NULL);
spin_lock(&journal->j_state_lock);
}
spin_unlock(&journal->j_state_lock);
@@ -1651,14 +1652,14 @@ static struct journal_head *journal_alloc_journal_head(void)
atomic_inc(&nr_journal_heads);
#endif
ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS);
if (ret == 0) {
if (ret == NULL) {
jbd_debug(1, "out of memory for journal_head\n");
if (time_after(jiffies, last_warning + 5*HZ)) {
printk(KERN_NOTICE "ENOMEM in %s, retrying.\n",
__FUNCTION__);
last_warning = jiffies;
}
while (ret == 0) {
while (ret == NULL) {
yield();
ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS);
}