Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs updates from Chris Mason: "This includes a fairly large change from Josef around data writeback completion. Before, the writeback wasn't completed until the metadata insertions for the extent were done, and this made for fairly large latency spikes on the last page of each ordered extent. We already had a separate mechanism for tracking pending metadata insertions, so Josef just needed to tweak things a little to end writeback earlier on the page. Overall it makes us much friendly to memory reclaim and lowers latencies quite a lot for synchronous IO. Jan Schmidt has finished some background work required to track btree blocks as they go through changes in ownership. It's the missing piece he needed for both btrfs send/receive and subvolume quotas. Neither of those are ready yet, but the new tracking code is included here. Most of the time, the new code is off. It is only used by scrub and other backref walkers. Stefan Behrens has added io failure tracking. This includes counters for which drives are causing the most trouble so the admin (or an automated tool) can choose to kick them out. We're tracking IO errors, crc errors, and generation checks we do on each metadata block. RAID5/6 did miss the cut this time because I'm having trouble with corruptions. I'll nail it down next week and post as a beta testing before 3.6" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (58 commits) Btrfs: fix tree mod log rewinded level and rewinding of moved keys Btrfs: fix tree mod log del_ptr Btrfs: add tree_mod_dont_log helper Btrfs: add missing spin_lock for insertion into tree mod log Btrfs: add inodes before dropping the extent lock in find_all_leafs Btrfs: use delayed ref sequence numbers for all fs-tree updates Btrfs: fix false positive in check-integrity on unmount Btrfs: fix runtime warning in check-integrity check data mode Btrfs: set ioprio of scrub readahead to idle Btrfs: fix return code in drop_objectid_items Btrfs: check to see if the inode is in the log before fsyncing Btrfs: return value of btrfs_read_buffer is checked correctly Btrfs: read device stats on mount, write modified ones during commit Btrfs: add ioctl to get and reset the device stats Btrfs: add device counters for detected IO and checksum errors btrfs: Drop unused function btrfs_abort_devices() Btrfs: fix the same inode id problem when doing auto defragment Btrfs: fall back to non-inline if we don't have enough space Btrfs: fix how we deal with the orphan block rsv Btrfs: convert the inode bit field to use the actual bit operations ...
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