[PATCH 5/29] ext4: use non-racy method for proc entries creation

Denis V. Lunev
2008-04-08T11:28:18Z

Use proc_create()/proc_create_data() to make sure that ->proc_fops and
->data be setup before gluing PDE to main tree.

Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: sct@redhat.com
CC: adilger@clusterfs.com
CC: linux-ext4@vger.kernel.org
---
fs/ext4/mballoc.c | 15 ++++-----------
1 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 9a6c70f..cbb47a0 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2455,17 +2455,10 @@ static void ext4_mb_history_init(struct super_block *sb)
int i;

if (sbi->s_mb_proc != NULL) {
- struct proc_dir_entry *p;
- p = create_proc_entry("mb_history", S_IRUGO, sbi->s_mb_proc);
- if (p) {
- p->proc_fops = &ext4_mb_seq_history_fops;
- p->data = sb;
- }
- p = create_proc_entry("mb_groups", S_IRUGO, sbi->s_mb_proc);
- if (p) {
- p->proc_fops = &ext4_mb_seq_groups_fops;
- p->data = sb;
- }
+ proc_create_data("mb_history", S_IRUGO, sbi->s_mb_proc,
+ &ext4_mb_seq_history_fops, sb);
+ proc_create_data("mb_groups", S_IRUGO, sbi->s_mb_proc,
+ &ext4_mb_seq_groups_fops, sb);
}

sbi->s_mb_history_max = 1000;
--
1.5.3.rc5