From fb78922ce9c71b24c4af1ffc9c3d60c57ac471fb Mon Sep 17 00:00:00 2001 From: Balbir Singh Date: Tue, 4 Mar 2008 14:28:24 -0800 Subject: [PATCH] Memory Resource Controller use strstrip while parsing arguments The memory controller has a requirement that while writing values, we need to use echo -n. This patch fixes the problem and makes the UI more consistent. Signed-off-by: Balbir Singh Cc: Paul Menage Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/controllers/memory.txt | 6 +++--- kernel/res_counter.c | 1 + 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/Documentation/controllers/memory.txt b/Documentation/controllers/memory.txt index 6015347b41e2..fba6af45225c 100644 --- a/Documentation/controllers/memory.txt +++ b/Documentation/controllers/memory.txt @@ -164,7 +164,7 @@ c. Enable CONFIG_CGROUP_MEM_CONT Since now we're in the 0 cgroup, We can alter the memory limit: -# echo -n 4M > /cgroups/0/memory.limit_in_bytes +# echo 4M > /cgroups/0/memory.limit_in_bytes NOTE: We can use a suffix (k, K, m, M, g or G) to indicate values in kilo, mega or gigabytes. @@ -185,7 +185,7 @@ number of factors, such as rounding up to page boundaries or the total availability of memory on the system. The user is required to re-read this file after a write to guarantee the value committed by the kernel. -# echo -n 1 > memory.limit_in_bytes +# echo 1 > memory.limit_in_bytes # cat memory.limit_in_bytes 4096 @@ -197,7 +197,7 @@ caches, RSS and Active pages/Inactive pages are shown. The memory.force_empty gives an interface to drop *all* charges by force. -# echo -n 1 > memory.force_empty +# echo 1 > memory.force_empty will drop all charges in cgroup. Currently, this is maintained for test. diff --git a/kernel/res_counter.c b/kernel/res_counter.c index 16cbec2d5d60..efbfc0fc232f 100644 --- a/kernel/res_counter.c +++ b/kernel/res_counter.c @@ -113,6 +113,7 @@ ssize_t res_counter_write(struct res_counter *counter, int member, ret = -EINVAL; + strstrip(buf); if (write_strategy) { if (write_strategy(buf, &tmp)) { goto out_free;