44b8bd7edd
Btrfs: Create a work queue for bio writes
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This allows checksumming to happen in parallel among many cpus, and
keeps us from bogging down pdflush with the checksumming code.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
f29844623d
Btrfs: Write out all super blocks on commit, and bring back proper barrier support
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
22c599485b
Btrfs: Handle data block end_io through the async work queue
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Before it was done by the bio end_io routine, the work queue code is able
to scale much better with faster IO subsystems.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
0999df54f8
Btrfs: Verify checksums on tree blocks found without read_tree_block
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Checksums were only verified by btrfs_read_tree_block, which meant the
functions to probe the page cache for blocks were not validating checksums.
Normally this is fine because the buffers will only be in cache if they
have already been validated.
But, there is a window while the buffer is being read from disk where
it could be up to date in the cache but not yet verified. This patch
makes sure all buffers go through checksum verification before they
are used.
This is safer, and it prevents modification of buffers before they go
through the csum code.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
8a4b83cc8b
Btrfs: Add support for device scanning and detection ioctls
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
0b86a832a1
Btrfs: Add support for multiple devices per filesystem
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:00 -04:00
e2008b6140
Btrfs: Add some simple throttling to wait for data=ordered and snapshot deletion
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
dc17ff8f11
Btrfs: Add data=ordered support
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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>
2008-09-25 11:03:59 -04:00
edbd8d4efe
Btrfs: Support for online FS resize (grow and shrink)
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
ff79f8190b
Btrfs: Add back file data checksumming
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:57 -04:00
6b80053d02
Btrfs: Add back the online defragging code
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:56 -04:00
db94535db7
Btrfs: Allow tree blocks larger than the page size
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:56 -04:00
5f39d397df
Btrfs: Create extent_buffer interface for large blocksizes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:56 -04:00
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>
2008-09-25 11:00:48 -04:00
86479a04ee
Add support for defragging files via btrfsctl -d. Avoid OOM on extent tree
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defrag.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-10 19:58:16 -04:00
58176a9604
Btrfs: Add per-root block accounting and sysfs entries
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-29 15:47:34 -04:00
a52d9a8033
Btrfs: Extent based page cache code. This uses an rbtree of extents and tests
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instead of buffer heads.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-27 16:49:44 -04:00
f2183bde1a
Btrfs: Add BH_Defrag to mark buffers that are in need of defragging
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This allows the tree walking code to defrag only the newly allocated
buffers, it seems to be a good balance between perfect defragging and the
performance hit of repeatedly reallocating blocks.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-10 14:42:37 -04:00
ccd467d60e
Btrfs: crash recovery fixes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-28 15:57:36 -04:00
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>
2007-06-22 14:16:25 -04:00
6cbd557078
Btrfs: add GPLv2
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-12 09:07:21 -04:00
35b7e47610
Btrfs: fix page cache memory leak
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-05-02 15:53:43 -04:00
090d18753c
Btrfs: directory readahead
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-05-01 08:53:32 -04:00
b4100d6424
Btrfs: add a device id to device items
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-12 12:14:00 -04:00
8352d8a473
Btrfs: add disk ioctl, mostly working
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-12 10:43:05 -04:00
7eccb903a8
Btrfs: create a logical->phsyical block number mapping scheme
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-11 15:53:25 -04:00
0f7d52f443
Btrfs: groundwork for subvolume and snapshot roots
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-09 10:42:37 -04:00
2c90e5d658
Btrfs: still corruption hunting
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-02 10:50:19 -04:00
f254e52c1c
Btrfs: verify csums on read
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-29 15:15:27 -04:00
d98237b3ed
Btrfs: use a btree inode instead of sb_getblk
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-28 13:57:48 -04:00
79154b1b5b
Btrfs: transaction rework
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-22 15:59:16 -04:00
e20d96d64f
Mountable btrfs, with readdir
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-22 12:13:20 -04:00
2e635a2783
Btrfs: initial move to kernel module land
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-21 11:12:56 -04:00
e089f05c18
Btrfs: transaction handles everywhere
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-16 16:20:31 -04:00
123abc88c9
Btrfs: variable block size support
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-14 14:14:43 -04:00
3768f3689f
Btrfs: Change the super to point to a tree of trees to enable persistent snapshots
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-13 16:47:54 -04:00
234b63a091
rename funcs and structs to btrfs
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-13 10:46:10 -04:00
a28ec19775
Btrfs: Fixup reference counting on cows
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-06 20:08:01 -05:00
ed2ff2cba7
Btrfs: pretend page cache & commit code
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-01 18:59:40 -05:00
9a8dd1502d
Btrfs: Block sized tree extents and extent deletion
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-02-23 08:38:36 -05:00
cfaa72952f
Btrfs: extent fixes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-02-21 17:04:57 -05:00
d97e63b69e
Btrfs: early extent mapping support
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-02-20 16:40:44 -05:00
eb60ceac0e
Btrfs: Add backing store, memory management
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-02-02 09:18:22 -05:00
Chris Mason