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[PATCH] md: fix /proc/mdstat refcounting
I have seen mdadm oops after successfully unloading md module. This patch privents from unloading md module while mdadm is polling /proc/mdstat. Cc: Neil Brown <neilb@suse.de> Signed-off-by: Akinbou Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -4912,6 +4912,7 @@ static unsigned int mdstat_poll(struct file *filp, poll_table *wait)
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}
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static struct file_operations md_seq_fops = {
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.owner = THIS_MODULE,
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.open = md_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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