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63b10fc487
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146 Commits

Author SHA1 Message Date
Chris Mason
63b10fc487 Reorder the flags field in struct btrfs_header and record a flag on writeout 
This allows detection of blocks that have already been written in the
running transaction so they can be recowed instead of modified again.
It is step one in trusting the transid field of the block pointers.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
2d2ae54797 Btrfs: Add leak debugging for extent_buffer and extent_state 
This also fixes one leak around the super block when failing to mount the
FS.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
83041add61 Btrfs: Use a higher default ra pages 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
0416008814 Create a btrfs backing dev info 
This allows intelligent versions of unplug and congestion functions

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
593060d756 Btrfs: Implement raid0 when multiple devices are present 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
8a4b83cc8b Btrfs: Add support for device scanning and detection ioctls 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
239b14b32d Btrfs: Bring back mount -o ssd optimizations 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
0d81ba5dbe Btrfs: Move device information into the super block so it can be scanned 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
6324fbf334 Btrfs: Dynamic chunk and block group allocation 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
0b86a832a1 Btrfs: Add support for multiple devices per filesystem 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
d7fc640e6f Btrfs: Allocator improvements 
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>
 2008-09-25 11:04:00 -04:00
Chris Mason
a86c12c73d Btrfs: Create larger bios for btree blocks 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
4529ba495c Btrfs: Add data block hints to SSD mode too 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
b0c68f8bed Btrfs: Enable delalloc accounting 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
6f568d35a0 Btrfs: mount -o max_inline=size to control the maximum inline extent size 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
70dec8079d Btrfs: extent_io and extent_state optimizations 
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>
 2008-09-25 11:03:59 -04:00
Chris Mason
d1310b2e0c Btrfs: Split the extent_map code into two parts 
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>
 2008-09-25 11:03:59 -04:00
Chris Mason
e18e4809b1 Btrfs: Add mount -o ssd, which includes optimizations for seek free storage 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
04005cc7a1 Btrfs: Use blk_congestion_wait on older kernels 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
cee36a03e8 Rework btrfs_drop_inode to avoid scheduling 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
b99aa6cb54 Btrfs: Only delete roots from sysfs when they were added to sysfs 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
55c69072d6 Btrfs: Fix extent_buffer usage when nodesize != leafsize 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
21ad10cf3e Btrfs: Add flush barriers on commit 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
e2008b6140 Btrfs: Add some simple throttling to wait for data=ordered and snapshot deletion 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
dc17ff8f11 Btrfs: Add data=ordered support 
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
Chris Mason
e4204dedbb Btrfs: Change tree block csum tagging to avoid false error messages 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
4313b3994d Btrfs: Reduce stack usage in the resizer, fix 32 bit compiles 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
edbd8d4efe Btrfs: Support for online FS resize (grow and shrink) 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
1832a6d5ee Btrfs: Implement basic support for -ENOSPC 
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>
 2008-09-25 11:03:58 -04:00
Chris Mason
6da6abae02 Btrfs: Back port to 2.6.18-el kernels 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
c59f8951d4 Btrfs: Add mount option to enforce a max extent size 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
d10c5f31c7 Btrfs: Fix extent_map and extent_state leaks by flushing lrus on FS unmount 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
b6cda9bcb4 Btrfs: Add mount -o nodatasum to turn of file data checksumming 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
d8d5f3e16d Btrfs: Add lowest key information to back refs for extent tree blocks as well. 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
7bb86316c3 Btrfs: Add back pointers from extents to the btree or file referencing them 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
87ee04eb0f Btrfs: Add simple stripe size parameter 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
ca6646264b Btrfs: Add efficient dirty accounting to the extent_map tree 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
448d640b66 Btrfs: Fine tune the btree writeback exclusion some more 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
8790bad7fb Btrfs: Only limit btree writeback for pdflush 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
793955bca6 Btrfs: Limit btree writeback to prevent seeks 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Yan
324ae4df00 Btrfs: Add block group pinned accounting back 
This patch adds a helper function 'update_pinned_extents' to
extent-tree.c. The usage of the helper function is similar to
'update_block_group',  the last parameter of the function indicates
pin vs unpin.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
0da5468f47 Btrfs: Use writepages for the metadata too 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
35ebb934bd Btrfs: Fix PAGE_CACHE_SHIFT shifts on 32 bit machines 
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
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
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
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
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
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
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