Lines Matching refs:mrp
31 #define mrinit(mrp, name) \
32 do { (mrp)->mr_writer = 0; init_rwsem(&(mrp)->mr_lock); } while (0)
34 #define mrinit(mrp, name) \
35 do { init_rwsem(&(mrp)->mr_lock); } while (0)
38 #define mrlock_init(mrp, t,n,s) mrinit(mrp, n)
39 #define mrfree(mrp) do { } while (0)
41 static inline void mraccess_nested(mrlock_t *mrp, int subclass)
43 down_read_nested(&mrp->mr_lock, subclass);
46 static inline void mrupdate_nested(mrlock_t *mrp, int subclass)
48 down_write_nested(&mrp->mr_lock, subclass);
50 mrp->mr_writer = 1;
54 static inline int mrtryaccess(mrlock_t *mrp)
56 return down_read_trylock(&mrp->mr_lock);
59 static inline int mrtryupdate(mrlock_t *mrp)
61 if (!down_write_trylock(&mrp->mr_lock))
64 mrp->mr_writer = 1;
69 static inline void mrunlock_excl(mrlock_t *mrp)
72 mrp->mr_writer = 0;
74 up_write(&mrp->mr_lock);
77 static inline void mrunlock_shared(mrlock_t *mrp)
79 up_read(&mrp->mr_lock);
82 static inline void mrdemote(mrlock_t *mrp)
85 mrp->mr_writer = 0;
87 downgrade_write(&mrp->mr_lock);