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596e65b4e8
We've dropped all the linux- prefixes on the file in favor of spl- which makes more sense. And we've cleaned up some of the includes so everybody should be including their own dependencies properly. All a module which wants to use the spl support needs to do in include spl.h and ensure it has access to Module.symvers. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@16 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
42 lines
541 B
C
42 lines
541 B
C
#include <spl-rwlock.h>
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int
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rw_lock_held(krwlock_t *rwlp)
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{
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BUG_ON(rwlp->rw_magic != RW_MAGIC);
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#ifdef CONFIG_RWSEM_GENERIC_SPINLOCK
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if (rwlp->rw_sem.activity != 0) {
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#else
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if (rwlp->rw_sem.count != 0) {
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#endif
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return 1;
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}
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return 0;
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}
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int
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rw_read_held(krwlock_t *rwlp)
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{
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BUG_ON(rwlp->rw_magic != RW_MAGIC);
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if (rw_lock_held(rwlp) && rwlp->rw_owner == NULL) {
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return 1;
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}
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return 0;
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}
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int
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rw_write_held(krwlock_t *rwlp)
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{
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BUG_ON(rwlp->rw_magic != RW_MAGIC);
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if (rwlp->rw_owner == current) {
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return 1;
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}
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return 0;
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}
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