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authorSimon Holm Thøgersen <odie@cs.aau.dk>2009-01-11 22:34:01 -0500
committerTheodore Ts'o <tytso@mit.edu>2009-01-11 22:34:01 -0500
commitc225aa57ff4ffe715df4692676b77c815a337236 (patch)
treeaf70801def246873525ca5003b1a91adf91e024b /fs/jbd2
parent18e352e4a73465349711a9324767e1b2453383e2 (diff)
ext4: fix wrong use of do_div
the following warning: fs/jbd2/journal.c: In function ‘jbd2_seq_info_show’: fs/jbd2/journal.c:850: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘uint32_t’ is caused by wrong usage of do_div that modifies the dividend in-place and returns the quotient. So not only would an incorrect value be displayed, but s->journal->j_average_commit_time would also be changed to a wrong value! Fix it by using div_u64 instead. Signed-off-by: Simon Holm Thøgersen <odie@cs.aau.dk> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2')
-rw-r--r--fs/jbd2/journal.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 56675306ed81..eb343008eded 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -37,10 +37,10 @@
37#include <linux/proc_fs.h> 37#include <linux/proc_fs.h>
38#include <linux/debugfs.h> 38#include <linux/debugfs.h>
39#include <linux/seq_file.h> 39#include <linux/seq_file.h>
40#include <linux/math64.h>
40 41
41#include <asm/uaccess.h> 42#include <asm/uaccess.h>
42#include <asm/page.h> 43#include <asm/page.h>
43#include <asm/div64.h>
44 44
45EXPORT_SYMBOL(jbd2_journal_start); 45EXPORT_SYMBOL(jbd2_journal_start);
46EXPORT_SYMBOL(jbd2_journal_restart); 46EXPORT_SYMBOL(jbd2_journal_restart);
@@ -846,8 +846,8 @@ static int jbd2_seq_info_show(struct seq_file *seq, void *v)
846 jiffies_to_msecs(s->stats->u.run.rs_flushing / s->stats->ts_tid)); 846 jiffies_to_msecs(s->stats->u.run.rs_flushing / s->stats->ts_tid));
847 seq_printf(seq, " %ums logging transaction\n", 847 seq_printf(seq, " %ums logging transaction\n",
848 jiffies_to_msecs(s->stats->u.run.rs_logging / s->stats->ts_tid)); 848 jiffies_to_msecs(s->stats->u.run.rs_logging / s->stats->ts_tid));
849 seq_printf(seq, " %luus average transaction commit time\n", 849 seq_printf(seq, " %lluus average transaction commit time\n",
850 do_div(s->journal->j_average_commit_time, 1000)); 850 div_u64(s->journal->j_average_commit_time, 1000));
851 seq_printf(seq, " %lu handles per transaction\n", 851 seq_printf(seq, " %lu handles per transaction\n",
852 s->stats->u.run.rs_handle_count / s->stats->ts_tid); 852 s->stats->u.run.rs_handle_count / s->stats->ts_tid);
853 seq_printf(seq, " %lu blocks per transaction\n", 853 seq_printf(seq, " %lu blocks per transaction\n",