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Author SHA1 Message Date
Chris Mason
f578d4bd7e Btrfs: Optimize csum insertion to create larger items when possible 
This reduces the number of calls to btrfs_extend_item and greatly lowers
the cpu usage while writing large files.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
5ee78ac70f Btrfs: Fix split_leaf to avoid incorrect double splits 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
ff190c0c00 Btrfs: Avoid recursive KM_USER1 mappings in copy_extent_buffer 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
3685f79165 Btrfs: CPU usage optimizations in push and the extent_map code 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
59d169e2b3 Btrfs: Fix read/write_extent_buffer to use KM_USER1 instead of KM_USER0 
This avoids recursive use of KM_USER0 during btrfs_file_write

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Jens Axboe
b4a2a0edfd Btrfs: sysfs compile fixup 
Just use kobject_set_name(), that works in all kernels (I think...).
Kernels newer than 2.6.23 currently fail with:

/home/axboe/git/btrfs/btrfs-unstable/sysfs.c:188: error: unknown field
'name' specified in initializer

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Jens Axboe
bbf0d0062d Btrfs: KM_IRQ0 usage in end_io handling 
endio handling is typically called with interrupts disabled, but can
also be called with it enabled. So save interrupts before using KM_IRQ0
to be completely safe.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Jens Axboe
0a2118dfd4 Btrfs: Fix bi_end_io() functions on > 2.6.23 kernels 
It now returns void and it is never called for partial completions, so
the bio->bi_size check must go.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Jens Axboe
ae2f5411c4 btrfs: 32-bit type problems 
An assorted set of casts to get rid of the warnings on 32-bit archs.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Yan Zheng
44b36eb20b Btrfs: Properly setup root key while reading the root 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
6d7231f7d3 Btrfs: Fix typo: owner is a 64 bit field 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
7936ca3883 Btrfs: Default to 8k max packed tails 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
a6b6e75e09 Btrfs: Defrag only leaves, and only when the parent node has a single objectid 
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>
 2008-09-25 11:03:57 -04:00
Chris Mason
ff79f8190b Btrfs: Add back file data checksumming 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
cf786e79e3 Btrfs: Defrag: only walk into nodes with the defrag bit set 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
304fced668 Btrfs: balance_dirty_pages_ratelimited is causing problems, use nr == 1 always 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
0f1ebbd159 Btrfs: Large block related defrag optimizations 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
19c00ddcc3 Btrfs: Add back metadata checksumming 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
0f82731fc5 Breakout BTRFS_SETGET_FUNCS into a separate C file, the inlines were too big. 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
810191ff30 Btrfs: extent_map optimizations to cut down on CPU usage 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
3326d1b07c Btrfs: Allow tails larger than one page 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
4dc119046d Btrfs: Add an extent buffer LRU to reduce radix tree hits 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
e19caa5f0e Btrfs: Fix allocation routines to avoid intermixing data and metadata allocations 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
6b80053d02 Btrfs: Add back the online defragging code 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
09e71a3263 Btrfs: Use an array of pages in the extent buffers to reduce the cost of find_get_page 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
14048ed0c4 Btrfs: Cache extent buffer mappings 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
db94535db7 Btrfs: Allow tree blocks larger than the page size 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
1a5bc167f6 Btrfs: Change the remaining radix trees used by extent-tree.c to extent_map trees 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
96b5179d0d Btrfs: Stop using radix trees for the block group cache 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
f510cfecfc Btrfs: Fix extent_buffer and extent_state leaks 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
ae5252bd51 Btrfs: Go back to kmaps instead of page_address in extent_buffers 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
6d36dcd48f Btrfs: Avoid memcpy where possible in extent_buffers 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
479965d66e Btrfs: Optimizations for the extent_buffer code 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
5f39d397df Btrfs: Create extent_buffer interface for large blocksizes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
50b78c24d5 btrfs_get_extent should treat inline extents as though they hold a whole block 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Christoph Hellwig
b3cfa35a49 Btrfs: factor page private preparations into a helper 
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Yan
8e1cd76664 Btrfs: Fix double free and off by one in inode.c 
The first change removes  potential double free, the second fix a off
by one error.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Yan
bab9fb035f Btrfs: truncate: don't update inode->i_blocks when extent is a hole 
I think check whether extent is a hole before update 'inode->i_blocks'
is unconditional required. (original codes check it only when
del_item isn't equal to 0)

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Yan
23223584e4 create btrfs_path slab with the correct size 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Yan
a61721d5b7 fix found_type decrement in btrfs_truncate_in_trans 
found_type has already been decreased by codes above the change,  I
think decrease it by one again doesn't make sense.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
cf67582bb2 Btrfs: Fix duplicate ENOSPC checks in find_free_extent 
find_free_extent would fail to wrap around to the start of the drive because
it was doing the enospc case checking twice in some cases, causing it
to return -ENOSPC early.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
d3c2fdcf7b Btrfs: Use balance_dirty_pages_nr on btree blocks 
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
Yan
7d7d6068be Btrfs: Fix cache_block_group to catch holes at the start of the group 
Cache block group was overly complex and missed free blocks at the very start
of the group.  This patch simplifies things significantly.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-14 16:15:28 -04:00
Yan
6af858b24c Btrfs: Fix off by one error in dirty_and_release_pages 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-14 10:23:29 -04:00
Christoph Hellwig
d03581f434 split up btrfs_ioctl 
Add a helper per ioctl function to make the code more readable.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-14 10:22:57 -04:00
Christoph Hellwig
34287aa360 Btrfs: use unlocked_ioctl 
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>
 2007-09-14 10:22:47 -04:00
Jan Engelhardt
432eba0882 Btrfs: Simplify makefile 
Single-colons will do here.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-14 10:22:19 -04:00
Chris Mason
84a5d5eefd Btrfs: add modules_install target 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-14 09:43:53 -04:00
Chris Mason
93a6925ec1 Btrfs: Fix extra link count dec in rename 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-14 09:42:31 -04:00
Chris Mason
3de3f774f9 Btrfs: Added tag v0.8 for changeset f5ce4cc64def 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-11 19:45:31 -04:00