Slab have some tunables like limit, batchcount, and sharedfactor can be
tuned through function slabinfo_write. Commit (b7454ad3: mm/sl[au]b: Move
slabinfo processing to slab_common.c) uncorrectly change /proc/slabinfo
unwriteable for slab, this patch fix it by revert to original mode.
Signed-off-by: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
---
mm/slab_common.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/mm/slab_common.c b/mm/slab_common.c
index d161b81..7fdde79 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -631,10 +631,20 @@ static const struct file_operations proc_slabinfo_operations = {
.release = seq_release,
};
+#ifdef CONFIG_SLAB
+static int __init slab_proc_init(void)
+{
+ proc_create("slabinfo", S_IWUSR | S_IRUSR, NULL, &proc_slabinfo_operations);
+ return 0;
+}
+#endif
+#ifdef CONFIG_SLUB
static int __init slab_proc_init(void)
{
proc_create("slabinfo", S_IRUSR, NULL, &proc_slabinfo_operations);
return 0;
}
+#endif
+
module_init(slab_proc_init);
#endif /* CONFIG_SLABINFO */
--
1.7.10.4
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