xfs/libxfs/xfs_alloc.c

911 	/* deactivate a bnobt cursor outside of locality range */  in xfs_alloc_cur_check()
927 	 * the candidate extent size. Compare locality for near allocation mode.  in xfs_alloc_cur_check()
936 	 * Deactivate a bnobt cursor with worse locality than the current best.  in xfs_alloc_cur_check()
998  * Locality allocation lookup algorithm. This expects a cntbt cursor and uses
999  * bno optimized lookup to search for extents with ideal size and locality.
1015 	/* locality optimized lookup */  in xfs_alloc_cntbt_iter()
1056 	 * than absolute best locality.  in xfs_alloc_cntbt_iter()
1344  * ideal locality based on the NEAR mode ->agbno locality hint.
1373 	 * right and lookup the closest extent to the locality hint for each  in xfs_alloc_ag_vextent_locality()
1376 	 * locality. Otherwise the search continues until the cntbt cursor runs  in xfs_alloc_ag_vextent_locality()
1378 	 * point, give up on locality, walk backwards from the end of the cntbt  in xfs_alloc_ag_vextent_locality()
1388 	 * more quickly than the bnobt. Since the locality hint is just a hint  in xfs_alloc_ag_vextent_locality()
1389 	 * and we don't want to scan the entire bnobt for perfect locality, the  in xfs_alloc_ag_vextent_locality()
1391 	 * find good enough locality at reasonable performance in most cases.  in xfs_alloc_ag_vextent_locality()
1425 		 * Check the extent with best locality based on the current  in xfs_alloc_ag_vextent_locality()
1603 	 * locality.  in xfs_alloc_ag_vextent_near()
3546  * you need an exact sized allocation without locality constraints, this is the
3588  * allocation attempts in @start_agno have locality information. If we fail to
3590  * we attempt to allocation in as there is no locality optimisation possible for