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path: root/fs/btrfs/file.c
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* 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: Add some simple throttling to wait for data=ordered and snapshot deletionChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add data=ordered supportChris Mason2008-09-25
| | | | | | | | 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>
* Btrfs: Lower the max inline size to 8kChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix lock ordering of the snapshot semaphore against the page lockChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Force inlining off in a few places to save stack usageChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Implement basic support for -ENOSPCChris Mason2008-09-25
| | | | | | | | | | This is intended to prevent accidentally filling the drive. A determined user can still make things oops. It includes some accounting of the current bytes under delayed allocation, but this will change as things get optimized Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Back port to 2.6.18-el kernelsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Fixes for loopback files in btrfsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Off by one fix for btrfs_drop_extentsYan2008-09-25
| | | | | | | | | | | One of my old patches introduces a new bug to btrfs_drop_extents(changeset 275). Inline extents are not truncated properly when "extent_end == end", it can trigger the BUG_ON at file.c:600. I hope I don't introduce new bug this time. --- Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add lowest key information to back refs for extent tree blocks as well.Chris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add back pointers from extents to the btree or file referencing themChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* btrfs_drop_extents: make sure the item is getting smaller before truncateChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fine tune the btree writeback exclusion some moreChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Allow large data extents in a single file to span into metadata block ↵Chris Mason2008-09-25
| | | | | | groups Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Fix EXTENT_MAP_INLINE off by one in btrfs_drop_extentsYan2008-09-25
| | | | | | | | Don't set hint_byte to EXTENT_MAP_INLINE when 'end == extent_end' or 'start == key.offset' . The inline extent will be truncated in these cases. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix u32 overflow in dirty_and_release_pages.Yan2008-09-25
| | | | | | | | | | | When calculating the size of inline extent, inode->i_size should also be take into consideration, otherwise sys_write may drop some data silently. You can test this bug by: #dd if=/dev/zero bs=4k count=1 of=test_file #dd if=/dev/zero bs=2k count=1 of=test_file conv=notrunc Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix a number of inline extent problems that Yan Zheng reported.Chris Mason2008-09-25
| | | | | | | | | | | | | | | | | | The fixes do a number of things: 1) Most btrfs_drop_extent callers will try to leave the inline extents in place. It can truncate bytes off the beginning of the inline extent if required. 2) writepage can now update the inline extent, allowing mmap writes to go directly into the inline extent. 3) btrfs_truncate_in_transaction truncates inline extents 4) extent_map.c fixed to not merge inline extent mappings and hole mappings together Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix PAGE_CACHE_SHIFT shifts on 32 bit machinesChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Add O_SYNC support to btrfs_file_writeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix for insert_inline_extent to handle offset != 0Yan2008-09-25
| | | | | | | | | This modifies inline extent size calculation, so that insert_inline_extent can handle the case that parameter 'offset' is not zero; it also a few codes to zero uninitialized area in inline extent. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* btrfs: 32-bit type problemsJens Axboe2008-09-25
| | | | | | An assorted set of casts to get rid of the warnings on 32-bit archs. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Default to 8k max packed tailsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add back file data checksummingChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: extent_map optimizations to cut down on CPU usageChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Allow tails larger than one pageChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Allow tree blocks larger than the page sizeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Create extent_buffer interface for large blocksizesChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: factor page private preparations into a helperChristoph Hellwig2008-09-25
| | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Use balance_dirty_pages_nr on btree blocksChris Mason2008-09-25
| | | | | | | | btrfs_btree_balance_dirty is changed to pass the number of pages dirtied for more accurate dirty throttling. This lets the VM make better decisions about when to force some writeback. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix off by one error in dirty_and_release_pagesYan2007-09-14
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: use unlocked_ioctlChristoph Hellwig2007-09-14
| | | | | | | No reason to grab the BKL before calling into the btrfs ioctl code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* [PATCH] btrfs: fix printk format warningChristoph Hellwig2007-09-10
| | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add more synchronization before creating a snapshotChris Mason2007-09-10
| | | | | | | | File data checksums are only done during writepage, so we have to make sure all pages are written when the snapshot is taken. This also adds some locking so that new writes don't race in and add new dirty pages. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: remove extra drop_extent_cache callChris Mason2007-08-30
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: fsx delalloc fixesChris Mason2007-08-30
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add delayed allocation to the extent based page tree codeChris Mason2007-08-27
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Extent based page cache code. This uses an rbtree of extents and testsChris Mason2007-08-27
| | | | | | instead of buffer heads. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: delay commits during fsync to allow more writersJosef Bacik2007-08-10
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add run time btree defrag, and an ioctl to force btree defragChris Mason2007-08-07
| | | | | | | | | | | This adds two types of btree defrag, a run time form that tries to defrag recently allocated blocks in the btree when they are still in ram, and an ioctl that forces defrag of all btree blocks. File data blocks are not defragged yet, but this can make a huge difference in sequential btree reads. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: deal with api changes in 2.6.23-rc1Chris Mason2007-07-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: trivial include fixupsZach Brown2007-07-11
| | | | | | | | | | | Almost none of the files including module.h need to do so, remove them. Include sched.h in extent-tree.c to silence a warning about cond_resched() being undeclared. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: crash recovery fixesChris Mason2007-06-28
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Audit callers and return codes to make sure -ENOSPC gets up the stackChris Mason2007-06-22
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Switch to libcrc32c to avoid problems with cryptomgr on highmem machinesChris Mason2007-06-22
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Subject: Rework btrfs_file_write to only allocate while page locks are heldChris Mason2007-06-18
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: patch queue: page_mkwriteChris Mason2007-06-15
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: i386 fixes from axboeChris Mason2007-06-12
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: add GPLv2Chris Mason2007-06-12
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
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