Lines Matching full:discard

38  * extremely slow discard implementations (e.g. ceph RBD) and so walking a
52  * state of the free extent is out of our control and we cannot run a discard
54  * extent as busy and undergoing a discard operation whilst we held the AGF
57  * This is exactly how online discard works - free extents are marked busy when
59  * the busy extent record is marked as "undergoing discard" and the discard is
60  * then issued on the free extent. Once the discard completes, the busy extent
63  * In the context of fstrim, if we find a free extent we need to discard, we
64  * don't have to discard it immediately. All we need to do it record that free
65  * extent as being busy and under discard, and all the allocation routines will
67  * the AGF lock, we can safely discard it without holding the AGF lock because
68  * nothing will attempt to allocate that free space until the discard completes.
71  * discard, and so for fast devices fstrim will run much faster as we can have
72  * multiple discard operations in flight at once, as well as pipeline the free
73  * extent search so that it overlaps in flight discard IO.
125  * Walk the discard list and issue discards on all the busy extents in the
150 	 "discard failed for extent [0x%llx,%u], error %d",  in xfs_discard_extents()
208 		/* sub-AG discard request always starts at tcur->start */  in xfs_trim_gather_extents()
294 		 * discard and try again the next time.  in xfs_trim_gather_extents()
322 	 * we aren't going to issue a discard on them any more.  in xfs_trim_gather_extents()
341  * for the repeated iteration of gather/discard loop, so use the longest extent
381 		 * We hand the extent list to the discard function here so the  in xfs_trim_perag_extents()
384 		 * the next round of extents to discard.  in xfs_trim_perag_extents()
477  * Walk the discard list and issue discards on all the busy extents in the
516 	 "discard failed for rtextent [0x%llx,%llu], error %d",  in xfs_discard_rtdev_extents()
635 	/* number of extents to examine before stopping to issue discard ios */
638 	/* number of extents queued for discard */
673 	 * If any blocks in the range are still busy, skip the discard and try  in xfs_trim_gather_rtgroup_extent()
739 		 * We hand the extent list to the discard function here so the  in xfs_trim_rtgroup_extents()
742 		 * gathering the next round of extents to discard.  in xfs_trim_rtgroup_extents()