#define DSTARTBLOCKMASK \
(((((xfs_dfsbno_t)1) << DSTARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
-#define ISNULLSTARTBLOCK(x) isnullstartblock(x)
static inline int isnullstartblock(xfs_fsblock_t x)
{
return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK;
}
-#define ISNULLDSTARTBLOCK(x) isnulldstartblock(x)
static inline int isnulldstartblock(xfs_dfsbno_t x)
{
return ((x) & DSTARTBLOCKMASK) == DSTARTBLOCKMASK;
}
-#define NULLSTARTBLOCK(k) nullstartblock(k)
static inline xfs_fsblock_t nullstartblock(int k)
{
ASSERT(k < (1 << STARTBLOCKVALBITS));
return STARTBLOCKMASK | (k);
}
-#define STARTBLOCKVAL(x) startblockval(x)
static inline xfs_filblks_t startblockval(xfs_fsblock_t x)
{
return (xfs_filblks_t)((x) & ~STARTBLOCKMASK);