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* Btrfs: Remove extent back refs in batches, and avoid duplicate searchesChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Allocator improvementsChris Mason2008-09-25
| | | | | | | | | Reduce CPU time searching for free blocks by optimizing find_first_extent_bit Fix find_free_extent to make better use of the last_alloc hint. Before it was often finding blocks just before the hint. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Disable tree defrag in SSD modeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: unaligned access fixesDavid Miller2008-09-25
| | | | | | | | | | | | | Btrfs set/get macros lose type information needed to avoid unaligned accesses on sparc64. ere is a patch for the kernel bits which fixes most of the unaligned accesses on sparc64. btrfs_name_hash is modified to return the hash value instead of getting a return location via a (potentially unaligned) pointer. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix "no csum found for inode" issue.Yan2008-09-25
| | | | | | | A few codes were not properly updated for changes of extent map. This may be the causes of "no csum found for inode" issue. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix i_blocks accountingChris Mason2008-09-25
| | | | | | | | | | Now that delayed allocation accounting works, i_blocks accounting is changed to only modify i_blocks when extents inserted or removed. The fillattr call is changed to include the delayed allocation byte count in the i_blocks result. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Create larger bios for btree blocksChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Don't case unsigned long to int in bio submissionChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Use 2MB as the empty_size for clustered allocationsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* btrfs_drop_extents: handle BTRFS_INODE_REF_KEY typesYan2008-09-25
| | | | | | It's possible "key.type == BTRFS_INODE_REF_KEY" and "key.offset >= end". Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add checks for last byte in disk to allocator groupingChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix hole creation in file_writeYan2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Update magicChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add debugging for block group update failureChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix typo in extent_io.cYan2008-09-25
| | | | | | --- Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Lower stack usage in transaction.cChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix delalloc account on state deletionChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Call btrfs_cow_block while lowering tree level.Yan2008-09-25
| | | | | | | | | | When freeing root block of a tree, btrfs_free_extent' parameter 'ref_generation' is from root block itseft. When freeing non-root block, 'ref_generation' is from its parent. so when converting a non-root block to root block, we must guarantee its generation is equal to its parent's generation. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Use last_alloc optimizations for metadata, even without -o ssdChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Hash in the offset and owner for file extent backref keysChris Mason2008-09-25
| | | | | | | This makes searches for backrefs and backref insertion much more efficient when there are many backrefs for a single extent Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Insert extent record and the first backref in a single balanceChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add a lookup cache to the extent state treeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add data block hints to SSD mode tooChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Enable delalloc accountingChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* btrfs_drop_extent fixe for inline items > 8KYan2008-09-25
| | | | | | | | 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>
* Fix hole start calculation in btrfs_settarChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Properly align the hole size in btrfs_setattrChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Align extent length to sectorsize inYan2008-09-25
| | | | | | --- Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Copy correct tree when inserting into slot 0Chris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Leave on the tree defragger in mount -o ssd, it still helps thereChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: mount -o max_inline=size to control the maximum inline extent sizeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Do delalloc accounting via hooks in the extent_state codeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add inode item and backref in one insert, reducing cpu usageChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: During deletes and truncate, remove many items at once from the treeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: extent_io and extent_state optimizationsChris Mason2008-09-25
| | | | | | | | | | | | 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>
* Btrfs: Add some extra debugging around file data checksum failuresChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Force f_pos to the max when a readdir hits the end of the directory.Chris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Tune readahead during defrag to avoid reading too much at onceChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Split the extent_map code into two partsChris Mason2008-09-25
| | | | | | | | | | | | | | 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>
* Btrfs: Fix hole insertion corner casesChris Mason2008-09-25
| | | | | | | | | | 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>
* Btrfs: Include sched.h in the acl code for current (fixes compile on 2.6.23)Chris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add basic lockfs callsYan2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix for test_range_bitYan2008-09-25
| | | | | | | 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>
* Fix for btrfs_find_free_objectidYan2008-09-25
| | | | | | | | 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>
* Btrfs: Add mount -o ssd, which includes optimizations for seek free storageChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Use blk_congestion_wait on older kernelsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix compile on 2.6.22 kernelYan2008-09-25
| | | | | | This patch fixes compile error on kernel-2.6.22 Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix compile on kernel without ACLs enabledYan2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix data=ordered vs wait_on_inode deadlock on older kernelsChris Mason2008-09-25
| | | | | | | 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>
* Btrfs: Run igrab on data=ordered inodes to prevent deadlocks during writeoutChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
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