Lines Matching refs:grant

225 Log space accounting is done via a pair of constructs called "grant heads".  The
226 position of the grant heads is an absolute value, so the amount of space
228 grant head and the current log tail. That is, how much space can be
229 reserved/consumed before the grant heads would fully wrap the log and overtake
232 The first grant head is the "reserve" head. This tracks the byte count of the
239 The reserve grant head is used to accurately account for exact transaction
248 The other grant head is the "write" head. Unlike the reserve head, this grant
250 this might sound like it is accounting the same state as the reserve grant head
251 - and it mostly does track exactly the same location as the reserve grant head -
269 grant head does not track physical space - it only accounts for the amount of
281 physical log space to be reserved from the write grant head, but only if one
292 move the tail of the log forwards to free up write grant space. Re-logging the
298 tail moving forwards and hence ensuring that write grant space is always
812 A static reservation needs to manipulate the log grant counters - we can take a