The patch titled
failslab: simplify debugfs initialization
has been added to the -mm tree. Its filename is
failslab-simplify-debugfs-initialization.patch
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------------------------------------------------------
Subject: failslab: simplify debugfs initialization
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Now cleanup_fault_attr_dentries() recursively removes a directory, So we
can simplify the error handling in the initialization code and no need to
hold dentry structs for each debugfs file.
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Matt Mackall <mpm@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/failslab.c | 33 +++++++++++----------------------
1 file changed, 11 insertions(+), 22 deletions(-)
diff -puN mm/failslab.c~failslab-simplify-debugfs-initialization mm/failslab.c
--- a/mm/failslab.c~failslab-simplify-debugfs-initialization
+++ a/mm/failslab.c
@@ -5,10 +5,6 @@ static struct {
struct fault_attr attr;
u32 ignore_gfp_wait;
int cache_filter;
-#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
- struct dentry *ignore_gfp_wait_file;
- struct dentry *cache_filter_file;
-#endif
} failslab = {
.attr = FAULT_ATTR_INITIALIZER,
.ignore_gfp_wait = 1,
@@ -39,31 +35,24 @@ __setup("failslab=", setup_failslab);
static int __init failslab_debugfs_init(void)
{
mode_t mode = S_IFREG | S_IRUSR | S_IWUSR;
- struct dentry *dir;
int err;
err = init_fault_attr_dentries(&failslab.attr, "failslab");
if (err)
return err;
- dir = failslab.attr.dir;
- failslab.ignore_gfp_wait_file =
- debugfs_create_bool("ignore-gfp-wait", mode, dir,
- &failslab.ignore_gfp_wait);
-
- failslab.cache_filter_file =
- debugfs_create_bool("cache-filter", mode, dir,
- &failslab.cache_filter);
-
- if (!failslab.ignore_gfp_wait_file ||
- !failslab.cache_filter_file) {
- err = -ENOMEM;
- debugfs_remove(failslab.cache_filter_file);
- debugfs_remove(failslab.ignore_gfp_wait_file);
- cleanup_fault_attr_dentries(&failslab.attr);
- }
+ if (!debugfs_create_bool("ignore-gfp-wait", mode, failslab.attr.dir,
+ &failslab.ignore_gfp_wait))
+ goto fail;
+ if (!debugfs_create_bool("cache-filter", mode, failslab.attr.dir,
+ &failslab.cache_filter))
+ goto fail;
+
+ return 0;
+fail:
+ cleanup_fault_attr_dentries(&failslab.attr);
- return err;
+ return -ENOMEM;
}
late_initcall(failslab_debugfs_init);
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
linux-next.patch
ext4-use-proper-little-endian-bitops.patch
ocfs2-avoid-unaligned-access-to-dqc_bitmap.patch
reiserfs-use-proper-little-endian-bitops.patch
reiserfs-use-hweight_long.patch
fault-injection-do-not-include-unneeded-header.patch
fault-injection-remove-nonexistent-function-extern.patch
fault-injection-cleanup-simple-attribute-of-stacktrace_depth.patch
fault-injection-use-debugfs_remove_recursive.patch
failslab-simplify-debugfs-initialization.patch
fail_page_alloc-simplify-debugfs-initialization.patch
fail_make_request-cleanup-should_fail_request.patch
asm-generic-add-another-generic-ext2-atomic-bitops.patch
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