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jbd2: use non-racy method for proc entries creation 

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: <linux-ext4@vger.kernel.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Denis V. Lunev 2008-04-29 01:02:11 -07:00 committed by Linus Torvalds
parent 19b4fc52d6
commit 79da3664f6
1 changed files with 4 additions and 13 deletions
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17
fs/jbd2/journal.c
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@ -904,19 +904,10 @@ static void jbd2_stats_proc_init(journal_t *journal)
snprintf(name, sizeof(name) - 1, "%s", bdevname(journal->j_dev, name));
journal->j_proc_entry = proc_mkdir(name, proc_jbd2_stats);
if (journal->j_proc_entry) {
struct proc_dir_entry *p;
p = create_proc_entry("history", S_IRUGO,
journal->j_proc_entry);
if (p) {
p->proc_fops = &jbd2_seq_history_fops;
p->data = journal;
p = create_proc_entry("info", S_IRUGO,
journal->j_proc_entry);
if (p) {
p->proc_fops = &jbd2_seq_info_fops;
p->data = journal;
}
}
proc_create_data("history", S_IRUGO, journal->j_proc_entry,
&jbd2_seq_history_fops, journal);
proc_create_data("info", S_IRUGO, journal->j_proc_entry,
&jbd2_seq_info_fops, journal);
}
}