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2008-09-25Btrfs: Enable delalloc accountingChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25btrfs_drop_extent fixe for inline items > 8KYan
When truncating a inline extent, btrfs_drop_extents doesn't properly handle the case "key.offset > inline_limit". This bug can only happen when max line size is larger than 8K. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Fix hole start calculation in btrfs_settarChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Properly align the hole size in btrfs_setattrChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Align extent length to sectorsize inYan
--- Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Copy correct tree when inserting into slot 0Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Leave on the tree defragger in mount -o ssd, it still helps thereChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: mount -o max_inline=size to control the maximum inline extent sizeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Do delalloc accounting via hooks in the extent_state codeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add inode item and backref in one insert, reducing cpu usageChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: During deletes and truncate, remove many items at once from the treeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: extent_io and extent_state optimizationsChris Mason
The end_bio routines are changed to take a pointer to the extent state struct, and the state tree is walked in order to set/clear appropriate bits as IO completes. This greatly reduces the number of rbtree searches done by the end_bio handlers, and reduces lock contention. The extent_io releasepage function is changed to avoid expensive searches for locked state. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add some extra debugging around file data checksum failuresChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Force f_pos to the max when a readdir hits the end of the directory.Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Tune readahead during defrag to avoid reading too much at onceChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Split the extent_map code into two partsChris Mason
There is now extent_map for mapping offsets in the file to disk and extent_io for state tracking, IO submission and extent_bufers. The new extent_map code shifts from [start,end] pairs to [start,len], and pushes the locking out into the caller. This allows a few performance optimizations and is easier to use. A number of extent_map usage bugs were fixed, mostly with failing to remove extent_map entries when changing the file. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix hole insertion corner casesChris Mason
There were a few places that could cause duplicate extent insertion, this adjusts the code that creates holes to avoid it. lookup_extent_map is changed to correctly return all of the extents in a range, even when there are none matching at the start of the range. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Include sched.h in the acl code for current (fixes compile on 2.6.23)Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add basic lockfs callsYan
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix for test_range_bitYan
test_range_bit doesn't properly handle the case: there's a hole at the end of the range and there's no other extent_state after the range. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Fix for btrfs_find_free_objectidYan
btrfs_find_free_objectid may return a used objectid due to arithmetic underflow. This bug may happen when parameter 'root' is tree root, so it may cause serious problems when creating snapshot or sub-volume. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add mount -o ssd, which includes optimizations for seek free storageChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Use blk_congestion_wait on older kernelsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix compile on 2.6.22 kernelYan
This patch fixes compile error on kernel-2.6.22 Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix compile on kernel without ACLs enabledYan
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix data=ordered vs wait_on_inode deadlock on older kernelsChris Mason
Using ilookup5 during data=ordered writeback could deadlock on I_LOCK. This saves a pointer to the inode instead. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Run igrab on data=ordered inodes to prevent deadlocks during writeoutChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Disable delalloc accounting for nowChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Rework btrfs_drop_inode to avoid schedulingChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add drop inode func to avoid data=ordered deadlockChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Delete any remaining extent_maps before freeing the inodeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Only delete roots from sysfs when they were added to sysfsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Change magic string to reflect new formatChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add readonly inode flagYan
This patch adds readonly inode flag support. A file with this flag can't be modified, but can be deleted. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Implement ACLs setting and gettingYan
ACLs are stored but not used for permission checks (yet) Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Remove verbose WARN_ONChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix extent_buffer usage when nodesize != leafsizeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add flush barriers on commitChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Remove extent_map debugging messageChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add inode flags supportYan
This patch adds NODATASUM & NODATACOW inode flags support. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: online shrinking fixesChris Mason
While shrinking the FS, the allocation functions need to make sure they don't try to allocate bytes past the end of the FS. nodatacow needed an extra check to force cows when the existing extents are past the end of the FS. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Disable btree reada during extent backref lookups.Chris Mason
This reada is generally not effective. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add some simple throttling to wait for data=ordered and snapshot deletionChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Move snapshot creation to commit timeChris Mason
It is very difficult to create a consistent snapshot of the btree when other writers may update the btree before the commit is done. This changes the snapshot creation to happen during the commit, while no other updates are possible. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add data=ordered supportChris Mason
This forces file data extents down the disk along with the metadata that references them. The current implementation is fairly simple, and just writes out all of the dirty pages in an inode before the commit. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Change tree block csum tagging to avoid false error messagesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: resizer: don't hold the fs_mutex for long periods of timeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Properly call btrfs_search_slot while shrinkingChris Mason
The shrinking code used btrfs_next_leaf to find the next item, but this does not cow the blocks it touches. This fix calls search_slot after finding the next item to do appropriate cow and balancing. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Lower the max inline size to 8kChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Change st_blocksize to 4kChris Mason
Some programs (python) do rwm cycles at the granularity returned by stat. Signed-off-by: Chris Mason <chris.mason@oracle.com>
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