eca942517b
Initialize r_flags the same way in all cases using a sanitized copy of flags that has several bits cleared. The RF_WANTED and RF_FIRSTSHARE bits are invalid in this context, and we want to defer setting RF_ACTIVE in r_flags until later. This should make rman_get_flags() return the correct answer in all cases. Add a KASSERT() to catch callers which incorrectly pass the RF_WANTED or RF_FIRSTSHARE flags. Do a strict equality check on the share type bits of flags. In particular, do an equality check on RF_PREFETCHABLE. The previous code would allow one type of mismatch of RF_PREFETCHABLE but disallow the other type of mismatch. Also, ignore the the RF_ALIGNMENT_MASK bits since alignment validity should be handled by the amask check. This field contains an integer value, but previous code did a strange bitwise comparison on it. Leave the original value of flags unmolested as a minor debug aid. Change the start+amask overflow check to a KASSERT() since it is just meant to catch a highly unlikely programming error in the caller. Reviewed by: jhb
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