Messages in this thread Patch in this message | | | From | Srinivasa Ds <> | Subject | Re: [RFC] [PATCH] cpuset operations causes Badness at mm/slab.c:777 warning | Date | Fri, 1 Jun 2007 16:20:05 +0530 |
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On Friday 01 June 2007 12:57:53 Srinivasa Ds wrote:
I have modified the patch little bit, Thanks Vatsa for input and hence resending it. Please let me know your comments on this.
Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com>
--- kernel/cpuset.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
Index: linux-2.6.22-rc3/kernel/cpuset.c =================================================================== --- linux-2.6.22-rc3.orig/kernel/cpuset.c +++ linux-2.6.22-rc3/kernel/cpuset.c @@ -1741,6 +1741,13 @@ static int cpuset_tasks_open(struct inod * show up until sometime later on. */ npids = atomic_read(&cs->count); + if (!npids) { + ctr->buf = NULL; + ctr->bufsz = 0; + file->private_data = ctr; + return 0; + } + pidarray = kmalloc(npids * sizeof(pid_t), GFP_KERNEL); if (!pidarray) goto err1; @@ -1772,6 +1779,9 @@ static ssize_t cpuset_tasks_read(struct { struct ctr_struct *ctr = file->private_data; + if (!ctr->buf) /* No tasks in this cpuset */ + return 0; + return simple_read_from_buffer(buf, nbytes, ppos, ctr->buf, ctr->bufsz); }
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