lkml.org 
[lkml]   [2018]   [Apr]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 11/25] staging: lustre: libcfs: invert error handling for cfs_cpt_table_print
Date
From: Amir Shehata <amir.shehata@intel.com>

Instead of setting rc to -EFBIG for several cases in the loop lets
initialize rc to -EFBIG and just break out of the loop in case of
failure. Just set rc to zero once we successfully finish the loop.

Signed-off-by: Amir Shehata <amir.shehata@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7734
Reviewed-on: http://review.whamcloud.com/18916
Reviewed-by: Olaf Weber <olaf@sgi.com>
Reviewed-by: Doug Oucharek <dougso@me.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
.../staging/lustre/lnet/libcfs/linux/linux-cpu.c | 22 ++++++++++------------
1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c
index bbf89b8..6d8dcd3 100644
--- a/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c
+++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c
@@ -158,29 +158,26 @@ struct cfs_cpt_table *
cfs_cpt_table_print(struct cfs_cpt_table *cptab, char *buf, int len)
{
char *tmp = buf;
- int rc = 0;
+ int rc = -EFBIG;
int i;
int j;

for (i = 0; i < cptab->ctb_nparts; i++) {
- if (len > 0) {
- rc = snprintf(tmp, len, "%d\t:", i);
- len -= rc;
- }
+ if (len <= 0)
+ goto out;
+
+ rc = snprintf(tmp, len, "%d\t:", i);
+ len -= rc;

- if (len <= 0) {
- rc = -EFBIG;
+ if (len <= 0)
goto out;
- }

tmp += rc;
for_each_cpu(j, cptab->ctb_parts[i].cpt_cpumask) {
- rc = snprintf(tmp, len, "%d ", j);
+ rc = snprintf(tmp, len, " %d", j);
len -= rc;
- if (len <= 0) {
- rc = -EFBIG;
+ if (len <= 0)
goto out;
- }
tmp += rc;
}

@@ -189,6 +186,7 @@ struct cfs_cpt_table *
len--;
}

+ rc = 0;
out:
if (rc < 0)
return rc;
--
1.8.3.1
\
 
 \ /
  Last update: 2018-04-16 06:14    [W:0.079 / U:2.744 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site