ref: 57f8b3d1acf273a88568c49d0b83b6863485b9e0
dir: /sys/src/cmd/dossrv/iotrack.h/
typedef struct MLock MLock; typedef struct Iosect Iosect; typedef struct Iotrack Iotrack; typedef struct Xfs Xfs; struct MLock { char key; }; struct Iosect { Iosect *next; short flags; MLock lock; Iotrack *t; uchar * iobuf; }; struct Iotrack { short flags; Xfs * xf; vlong addr; Iotrack *next; /* in lru list */ Iotrack *prev; Iotrack *hnext; /* in hash list */ Iotrack *hprev; MLock lock; int ref; Iosect **tp; }; #define BMOD (1<<0) #define BIMM (1<<1) #define BSTALE (1<<2) Iosect* getosect(Xfs*, vlong); Iosect* getsect(Xfs*, vlong); int canmlock(MLock*); int devread(Xfs*, vlong, void*, long); int devwrite(Xfs*, vlong, void*, long); int tread(Iotrack*); int twrite(Iotrack*); void iotrack_init(void); void mlock(MLock*); void purgebuf(Xfs*); void putsect(Iosect*); void sync(void); void unmlock(MLock*);