diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-12 06:53:12 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-12 21:05:41 +0300 |
| commit | e581595ea29c737587bcc349420bfdacb9a6b02b (patch) | |
| tree | 7cd2950ad481373601055b20624f066a9ed9123e /fs/ocfs2/cluster/netdebug.c | |
| parent | 5da844a2c7df642de2618fc3efe9a92eec40899d (diff) | |
| download | linux-e581595ea29c737587bcc349420bfdacb9a6b02b.tar.xz | |
ocfs: no need to check return value of debugfs_create functions
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Also, because there is no need to save the file dentry, remove all of
the variables that were being saved, and just recursively delete the
whole directory when shutting down, saving a lot of logic and local
variables.
[gregkh@linuxfoundation.org: v2]
Link: http://lkml.kernel.org/r/20190613055455.GE19717@kroah.com
Link: http://lkml.kernel.org/r/20190612152912.GA19151@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Jia Guo <guojia12@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/cluster/netdebug.c')
| -rw-r--r-- | fs/ocfs2/cluster/netdebug.c | 39 |
1 files changed, 11 insertions, 28 deletions
diff --git a/fs/ocfs2/cluster/netdebug.c b/fs/ocfs2/cluster/netdebug.c index 0784575f4c2a..02bf4a1774cc 100644 --- a/fs/ocfs2/cluster/netdebug.c +++ b/fs/ocfs2/cluster/netdebug.c @@ -38,10 +38,6 @@ #define SHOW_SOCK_STATS 1 static struct dentry *o2net_dentry; -static struct dentry *sc_dentry; -static struct dentry *nst_dentry; -static struct dentry *stats_dentry; -static struct dentry *nodes_dentry; static DEFINE_SPINLOCK(o2net_debug_lock); @@ -490,36 +486,23 @@ static const struct file_operations nodes_fops = { void o2net_debugfs_exit(void) { - debugfs_remove(nodes_dentry); - debugfs_remove(stats_dentry); - debugfs_remove(sc_dentry); - debugfs_remove(nst_dentry); - debugfs_remove(o2net_dentry); + debugfs_remove_recursive(o2net_dentry); } -int o2net_debugfs_init(void) +void o2net_debugfs_init(void) { umode_t mode = S_IFREG|S_IRUSR; o2net_dentry = debugfs_create_dir(O2NET_DEBUG_DIR, NULL); - if (o2net_dentry) - nst_dentry = debugfs_create_file(NST_DEBUG_NAME, mode, - o2net_dentry, NULL, &nst_seq_fops); - if (nst_dentry) - sc_dentry = debugfs_create_file(SC_DEBUG_NAME, mode, - o2net_dentry, NULL, &sc_seq_fops); - if (sc_dentry) - stats_dentry = debugfs_create_file(STATS_DEBUG_NAME, mode, - o2net_dentry, NULL, &stats_seq_fops); - if (stats_dentry) - nodes_dentry = debugfs_create_file(NODES_DEBUG_NAME, mode, - o2net_dentry, NULL, &nodes_fops); - if (nodes_dentry) - return 0; - - o2net_debugfs_exit(); - mlog_errno(-ENOMEM); - return -ENOMEM; + + debugfs_create_file(NST_DEBUG_NAME, mode, o2net_dentry, NULL, + &nst_seq_fops); + debugfs_create_file(SC_DEBUG_NAME, mode, o2net_dentry, NULL, + &sc_seq_fops); + debugfs_create_file(STATS_DEBUG_NAME, mode, o2net_dentry, NULL, + &stats_seq_fops); + debugfs_create_file(NODES_DEBUG_NAME, mode, o2net_dentry, NULL, + &nodes_fops); } #endif /* CONFIG_DEBUG_FS */ |