22 lines
605 B
C
22 lines
605 B
C
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#ifndef __XFS_SUPPORT_RWSEM_H__
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#define __XFS_SUPPORT_RWSEM_H__
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sx.h>
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#define rw_semaphore sx
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#define init_rwsem(sem) sx_init(sem, "rwsem")
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#define free_rwsem(sem) sx_destroy(sem)
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#define down_read(sem) sx_slock(sem)
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#define down_read_trylock(sem) sx_try_slock(sem)
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#define down_write(sem) sx_xlock(sem)
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#define down_write_trylock(sem) sx_try_xlock(sem)
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#define up_read(sem) sx_sunlock(sem)
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#define up_write(sem) sx_xunlock(sem)
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#define downgrade_write(sem) sx_downgrade(sem)
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#endif /* __XFS_SUPPORT_RWSEM_H__ */
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