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authorSasikantha babu <sasikanth.v19@gmail.com>2012-05-30 02:06:22 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-30 03:22:19 +0400
commitbde8bd8a1d5242589ddcaef8e017b48b207c4729 (patch)
treee9fcbae5837689831b2a87a8ac8e9a789fb5e762 /mm/vmstat.c
parent7edc8b0ac16cbaed7cb4ea4c6b95ce98d2997e84 (diff)
downloadlinux-bde8bd8a1d5242589ddcaef8e017b48b207c4729.tar.xz
mm/vmstat.c: remove debug fs entries on failure of file creation and made extfrag_debug_root dentry local
Remove debug fs files and directory on failure. Since no one is using "extfrag_debug_root" dentry outside of extfrag_debug_init(), make it local to the function. Signed-off-by: Sasikantha babu <sasikanth.v19@gmail.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
-rw-r--r--mm/vmstat.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 0dad31dc1618..1bbbbd9776ad 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1223,7 +1223,6 @@ module_init(setup_vmstat)
#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_COMPACTION)
#include <linux/debugfs.h>
-static struct dentry *extfrag_debug_root;
/*
* Return an index indicating how much of the available free memory is
@@ -1361,19 +1360,24 @@ static const struct file_operations extfrag_file_ops = {
static int __init extfrag_debug_init(void)
{
+ struct dentry *extfrag_debug_root;
+
extfrag_debug_root = debugfs_create_dir("extfrag", NULL);
if (!extfrag_debug_root)
return -ENOMEM;
if (!debugfs_create_file("unusable_index", 0444,
extfrag_debug_root, NULL, &unusable_file_ops))
- return -ENOMEM;
+ goto fail;
if (!debugfs_create_file("extfrag_index", 0444,
extfrag_debug_root, NULL, &extfrag_file_ops))
- return -ENOMEM;
+ goto fail;
return 0;
+fail:
+ debugfs_remove_recursive(extfrag_debug_root);
+ return -ENOMEM;
}
module_init(extfrag_debug_init);