Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6
* 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits) IB/umad: BKL is not needed for ib_umad_open() IB/uverbs: BKL is not needed for ib_uverbs_open() bf561-coreb: BKL unneeded for open() Call fasync() functions without the BKL snd/PCM: fasync BKL pushdown ipmi: fasync BKL pushdown ecryptfs: fasync BKL pushdown Bluetooth VHCI: fasync BKL pushdown tty_io: fasync BKL pushdown tun: fasync BKL pushdown i2o: fasync BKL pushdown mpt: fasync BKL pushdown Remove BKL from remote_llseek v2 Make FAT users happier by not deadlocking x86-mce: BKL pushdown vmwatchdog: BKL pushdown vmcp: BKL pushdown via-pmu: BKL pushdown uml-random: BKL pushdown uml-mmapper: BKL pushdown ...
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@ -13,6 +13,7 @@
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/watchdog.h>
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#include <linux/smp_lock.h>
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#include <asm/ebcdic.h>
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#include <asm/io.h>
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@ -121,11 +122,15 @@ static int __init vmwdt_probe(void)
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static int vmwdt_open(struct inode *i, struct file *f)
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{
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int ret;
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if (test_and_set_bit(0, &vmwdt_is_open))
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lock_kernel();
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if (test_and_set_bit(0, &vmwdt_is_open)) {
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unlock_kernel();
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return -EBUSY;
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}
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ret = vmwdt_keepalive();
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if (ret)
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clear_bit(0, &vmwdt_is_open);
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unlock_kernel();
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return ret ? ret : nonseekable_open(i, f);
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}
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