a6b6e75e09
Btrfs: Defrag only leaves, and only when the parent node has a single objectid
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This allows us to defrag huge directories, but skip the expensive defrag
case in more common usage, where it does not help as much.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
17 years ago
4dc119046d
Btrfs: Add an extent buffer LRU to reduce radix tree hits
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
17 years ago
6b80053d02
Btrfs: Add back the online defragging code
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
17 years ago
db94535db7
Btrfs: Allow tree blocks larger than the page size
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
17 years ago
1a5bc167f6
Btrfs: Change the remaining radix trees used by extent-tree.c to extent_map trees
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
17 years ago
f510cfecfc
Btrfs: Fix extent_buffer and extent_state leaks
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
17 years ago
5f39d397df
Btrfs: Create extent_buffer interface for large blocksizes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
17 years ago
d3c2fdcf7b
Btrfs: Use balance_dirty_pages_nr on btree blocks
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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>
17 years ago
5ce14bbcdd
Btrfs: Find and remove dead roots the first time a root is loaded.
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Dead roots are trees left over after a crash, and they were either in the
process of being removed or were waiting to be removed when the box crashed.
Before, a search of the entire tree of root pointers was done on mount
looking for dead roots. Now, the search is done the first time we load
a root.
This makes mount faster when there are a large number of snapshots, and it
enables the block accounting code to properly update the block counts on
the latest root as old versions of the root are reaped after a crash.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
58176a9604
Btrfs: Add per-root block accounting and sysfs entries
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
15ee9bc7ed
Btrfs: delay commits during fsync to allow more writers
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
e9d0b13b5b
Btrfs: Btree defrag on the extent-mapping tree as well
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
409eb95d7f
Btrfs: Further reduce the concurrency penalty of defrag and drop_snapshot
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
26b8003f10
Btrfs: Replace extent tree preallocation code with some bit radix magic.
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
f4468e94c8
Btrfs: Let some locks go during defrag and snapshot dropping
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
6702ed490c
Btrfs: Add run time btree defrag, and an ioctl to force btree defrag
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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>
18 years ago
9f3a742736
Btrfs: Do snapshot deletion in smaller chunks.
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Before, snapshot deletion was a single atomic unit. This caused considerable
lock contention and required an unbounded amount of space. Now,
the drop_progress field in the root item is used to indicate how far along
snapshot deletion is, and to resume where it left off.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
ec6b910fb3
Btrfs: trivial include fixups
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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>
18 years ago
ccd467d60e
Btrfs: crash recovery fixes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
4b52dff6d3
Btrfs: Fix super block updates during transaction commit
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The super block written during commit was not consistent with the state of
the trees. This change adds an in-memory copy of the super so that we can
make sure to write out consistent data during a commit.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
22bb92f376
Btrfs: Documentation update
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
5eda7b5e9b
Btrfs: Add the ability to find and remove dead roots after a crash.
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
54aa1f4dfd
Btrfs: Audit callers and return codes to make sure -ENOSPC gets up the stack
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
8c2383c3dd
Subject: Rework btrfs_file_write to only allocate while page locks are held
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
340887809d
Btrfs: i386 fixes from axboe
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
6cbd557078
Btrfs: add GPLv2
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
0cf6c62017
Btrfs: remove device tree
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
ad693af684
Btrfs: reap dead roots right after commit
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
facda1e787
Btrfs: get forced transaction commits via workqueue
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
08607c1b18
Btrfs: add compat ioctl
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
e37c9e6921
Btrfs: many allocator fixes, pretty solid
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
35b7e47610
Btrfs: fix page cache memory leak
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
31f3c99b73
Btrfs: allocator improvements, inode block groups
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
7c4452b9a6
Btrfs: smarter transaction writeback
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
9078a3e1e4
Btrfs: start of block group code
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
8fd17795b2
Btrfs: early fsync support
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
8352d8a473
Btrfs: add disk ioctl, mostly working
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
7eccb903a8
Btrfs: create a logical->phsyical block number mapping scheme
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
2619ba1f0f
Btrfs: subvolumes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
d0dbc6245c
Btrfs: drop owner and parentid
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
1b05da2ee6
Btrfs: drop the inode map tree
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
0f7d52f443
Btrfs: groundwork for subvolume and snapshot roots
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
d6e4a428eb
Btrfs: start of support for many FS volumes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
7cfcc17e7f
Btrfs: corruptions fixed
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
2c90e5d658
Btrfs: still corruption hunting
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
d602557953
Btrfs: corruption hunt continues
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
22b0ebda6c
Btrfs: hunting slab corruption
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
d98237b3ed
Btrfs: use a btree inode instead of sb_getblk
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
78fae27ebf
Btrfs: leak fixes, pinning fixes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
d571976292
btrfs_create, btrfs_write_super, btrfs_sync_fs
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
18 years ago
Chris Mason