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| author | David S. Miller <davem@davemloft.net> | 2010-09-09 22:27:33 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-09 22:27:33 -0700 |
| commit | e548833df83c3554229eff0672900bfe958b45fd (patch) | |
| tree | 85efc4a76dc356593d6d394776aeb845dc580fb6 /kernel/trace/trace.c | |
| parent | cbd9da7be869f676afc204e1a664163778c770bd (diff) | |
| parent | 053d8f6622701f849fda2ca2c9ae596c13599ba9 (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
net/mac80211/main.c
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index ba14a22be4c..9ec59f54115 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -3463,6 +3463,7 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *fpos) { char *buf; + size_t written; if (tracing_disabled) return -EINVAL; @@ -3484,11 +3485,15 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, } else buf[cnt] = '\0'; - cnt = mark_printk("%s", buf); + written = mark_printk("%s", buf); kfree(buf); - *fpos += cnt; + *fpos += written; - return cnt; + /* don't tell userspace we wrote more - it might confuse them */ + if (written > cnt) + written = cnt; + + return written; } static int tracing_clock_show(struct seq_file *m, void *v) |