Christoph Hellwig 55a7bc5a30 xfs: do not discard alloc btree blocks ... Blocks for the allocation btree are allocated from and released to the AGFL, and thus frequently reused. Even worse we do not have an easy way to avoid using an AGFL block when it is discarded due to the simple FILO list of free blocks, and thus can frequently stall on blocks that are currently undergoing a discard. Add a flag to the busy extent tracking structure to skip the discard for allocation btree blocks. In normal operation these blocks are reused frequently enough that there is no need to discard them anyway, but if they spill over to the allocation btree as part of a balance we "leak" blocks that we would otherwise discard. We could fix this by adding another flag and keeping these block in the rbtree even after they aren't busy any more so that we could discard them when they migrate out of the AGFL. Given that this would cause significant overhead I don't think it's worthwile for now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>		2011-05-24 11:17:22 -05:00
..
linux-2.6	xfs: add online discard support	2011-05-24 11:17:13 -05:00
quota	Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs	2011-04-11 15:48:57 -07:00
support	xfs: kill support/debug.[ch]	2011-03-07 10:09:35 +11:00
Kconfig	quota: Make QUOTACTL config be selected by its users	2010-10-05 12:16:37 +02:00
Makefile	Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs	2011-03-21 14:24:56 -07:00
xfs_acl.h	fs: provide rcu-walk aware permission i_ops	2011-01-07 17:50:29 +11:00
xfs_ag.h	xfs: do not discard alloc btree blocks	2011-05-24 11:17:22 -05:00
xfs_alloc_btree.c	xfs: do not discard alloc btree blocks	2011-05-24 11:17:22 -05:00
xfs_alloc_btree.h
xfs_alloc.c	xfs: do not discard alloc btree blocks	2011-05-24 11:17:22 -05:00
xfs_alloc.h	xfs: do not discard alloc btree blocks	2011-05-24 11:17:22 -05:00
xfs_arch.h
xfs_attr_leaf.c	xfs: use KM_NOFS for allocations during attribute list operations	2010-12-23 11:57:37 +11:00
xfs_attr_leaf.h
xfs_attr_sf.h
xfs_attr.c	xfs: remove xfs_buf wrappers	2010-10-18 15:08:07 -05:00
xfs_attr.h
xfs_bit.c
xfs_bit.h
xfs_bmap_btree.c	xfs: remove unneeded #include statements	2010-07-26 13:16:33 -05:00
xfs_bmap_btree.h
xfs_bmap.c	xfs: Convert remaining cmn_err() callers to new API	2011-03-07 10:08:35 +11:00
xfs_bmap.h	xfs: fix failed write truncation handling.	2010-12-01 07:40:19 -06:00
xfs_btree_trace.c
xfs_btree_trace.h
xfs_btree.c	xfs: connect up buffer reclaim priority hooks	2010-12-02 16:31:13 +11:00
xfs_btree.h	xfs: remove the ->kill_root btree operation	2010-10-18 15:07:38 -05:00
xfs_buf_item.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_buf_item.h	xfs: use struct list_head for the buf cancel table	2010-12-16 16:05:22 -06:00
xfs_da_btree.c	xfs: Convert remaining cmn_err() callers to new API	2011-03-07 10:08:35 +11:00
xfs_da_btree.h
xfs_dfrag.c	xfs: cleanup duplicate initializations	2011-04-28 13:25:29 -05:00
xfs_dfrag.h
xfs_dinode.h	xfs: Extend project quotas to support 32bit project ids	2010-10-18 15:08:08 -05:00
xfs_dir2_block.c	xfs: fix gcc 4.6 set but not read and unused statement warnings	2010-07-26 13:16:51 -05:00
xfs_dir2_block.h
xfs_dir2_data.c	xfs: remove unneeded #include statements	2010-07-26 13:16:33 -05:00
xfs_dir2_data.h
xfs_dir2_leaf.c	xfs: remove xfs_buf wrappers	2010-10-18 15:08:07 -05:00
xfs_dir2_leaf.h
xfs_dir2_node.c	xfs: Convert remaining cmn_err() callers to new API	2011-03-07 10:08:35 +11:00
xfs_dir2_node.h
xfs_dir2_sf.c	xfs: remove unneeded #include statements	2010-07-26 13:16:33 -05:00
xfs_dir2_sf.h
xfs_dir2.c	xfs: convert xfs_fs_cmn_err to new error logging API	2011-03-07 10:05:35 +11:00
xfs_dir2.h
xfs_error.c	xfs: Convert remaining cmn_err() callers to new API	2011-03-07 10:08:35 +11:00
xfs_error.h	xfs: kill support/debug.[ch]	2011-03-07 10:09:35 +11:00
xfs_extfree_item.c	xfs: fix efi item leak on forced shutdown	2011-01-28 09:01:33 -06:00
xfs_extfree_item.h	xfs: Pull EFI/EFD handling out from under the AIL lock	2010-12-20 11:59:49 +11:00
xfs_filestream.c	xfs: tell lockdep about parent iolock usage in filestreams	2010-11-10 12:00:48 -06:00
xfs_filestream.h	xfs: clean up filestreams helpers	2010-07-26 13:16:51 -05:00
xfs_fs.h	xfs: Extend project quotas to support 32bit project ids	2010-10-18 15:08:08 -05:00
xfs_fsops.c	xfs: convert xfs_fs_cmn_err to new error logging API	2011-03-07 10:05:35 +11:00
xfs_fsops.h	xfs: ensure log covering transactions are synchronous	2011-01-11 20:28:17 -06:00
xfs_ialloc_btree.c	xfs: remove the ->kill_root btree operation	2010-10-18 15:07:38 -05:00
xfs_ialloc_btree.h
xfs_ialloc.c	xfs: Convert remaining cmn_err() callers to new API	2011-03-07 10:08:35 +11:00
xfs_ialloc.h
xfs_iget.c	Merge branch 'master' into for-linus-merged	2011-01-10 21:35:55 -06:00
xfs_inode_item.c	xfs: cleanup duplicate initializations	2011-04-28 13:25:29 -05:00
xfs_inode_item.h	xfs: simplify inode to transaction joining	2010-07-26 13:16:36 -05:00
xfs_inode.c	xfs: fix xfs_itruncate_start tracing	2011-05-19 12:03:36 -05:00
xfs_inode.h	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_inum.h
xfs_iomap.c	xfs: rename xfs_cmn_err_fsblock_zero()	2011-03-07 10:06:35 +11:00
xfs_iomap.h	xfs: kill xfs_iomap	2010-12-16 16:05:51 -06:00
xfs_itable.c	xfs: fix variable set but not used warnings	2011-04-08 08:09:12 -05:00
xfs_itable.h	xfs: remove block number from inode lookup code	2010-06-24 11:35:17 +10:00
xfs_log_cil.c	xfs: add online discard support	2011-05-24 11:17:13 -05:00
xfs_log_priv.h	xfs: exact busy extent tracking	2011-04-28 13:18:04 -05:00
xfs_log_recover.c	xfs: reset buffer pointers before freeing them	2011-05-19 12:03:45 -05:00
xfs_log_recover.h	xfs: Clean up XFS_BLI_* flag namespace	2010-05-24 10:33:39 -05:00
xfs_log.c	xfs: reset buffer pointers before freeing them	2011-05-19 12:03:45 -05:00
xfs_log.h	xfs: exact busy extent tracking	2011-04-28 13:18:04 -05:00
xfs_mount.c	xfs: cleanup duplicate initializations	2011-04-28 13:25:29 -05:00
xfs_mount.h	xfs: add online discard support	2011-05-24 11:17:13 -05:00
xfs_mru_cache.c	xfs: convert to alloc_workqueue()	2011-02-01 11:42:43 +01:00
xfs_mru_cache.h
xfs_quota.h	xfs: Convert xlog_warn to new logging interface	2011-03-07 10:01:35 +11:00
xfs_rename.c	xfs: log timestamp changes to the source inode in rename	2010-12-09 17:07:02 -06:00
xfs_rtalloc.c	xfs: Convert remaining cmn_err() callers to new API	2011-03-07 10:08:35 +11:00
xfs_rtalloc.h	xfs: Convert remaining cmn_err() callers to new API	2011-03-07 10:08:35 +11:00
xfs_rw.c	xfs: Convert remaining cmn_err() callers to new API	2011-03-07 10:08:35 +11:00
xfs_rw.h
xfs_sb.h	xfs: Extend project quotas to support 32bit project ids	2010-10-18 15:08:08 -05:00
xfs_trans_ail.c	xfs: fix race condition in AIL push trigger	2011-05-09 12:17:04 -05:00
xfs_trans_buf.c	xfs: xfs_trans_read_buf() should return an error on failure	2011-03-26 09:14:44 +11:00
xfs_trans_extfree.c	xfs: Pull EFI/EFD handling out from under the AIL lock	2010-12-20 11:59:49 +11:00
xfs_trans_inode.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_trans_priv.h	xfs: push the AIL from memory reclaim and periodic sync	2011-04-08 12:45:07 +10:00
xfs_trans_space.h
xfs_trans.c	xfs: add online discard support	2011-05-24 11:17:13 -05:00
xfs_trans.h	xfs: more sensible inode refcounting for ialloc	2011-02-22 20:32:28 -06:00
xfs_types.h	xfs: exact busy extent tracking	2011-04-28 13:18:04 -05:00
xfs_utils.c	xfs: remove xfs_cred.h	2010-10-18 15:08:06 -05:00
xfs_utils.h	xfs: remove xfs_cred.h	2010-10-18 15:08:06 -05:00
xfs_vnodeops.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs_vnodeops.h	xfs: preallocation transactions do not need to be synchronous	2011-03-26 09:13:08 +11:00
xfs.h