Miguel [Fri, 11 Apr 2008 19:46:48 +0000 (15:46 -0400)]
Btrfs: define write_cache_pages for linux kernel <= 2.6.20 instead
write_cache_pages doesn't exist in linux 2.6.20, change the #if
condition to match that.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Miguel [Fri, 11 Apr 2008 19:45:51 +0000 (15:45 -0400)]
Btrfs: Endianess bug fix for v0.13 with kernels
Fix for a endianess BUG when using btrfs v0.13 with kernels older than 2.6.23
Problem:
Has of v0.13, btrfs-progs is using crc32c.c equivalent to the one found on
linux-2.6.23/lib/libcrc32c.c Since crc32c_le() changed in linux-2.6.23, when
running btrfs v0.13 with older kernels we have a missmatch between the versions
of crc32c_le() from btrfs-progs and libcrc32c in the kernel. This missmatch
causes a bug when using btrfs on big endian machines.
Solution:
btrfs_crc32c() macro that when compiling for kernels older than 2.6.23, does
endianess conversion to parameters and return value of crc32c().
This endianess conversion nullifies the differences in implementation
of crc32c_le().
If kernel 2.6.23 or better, it calls crc32c().
Signed-off-by: Miguel Sousa Filipe <miguel.filipe@gmail.com>
---
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 11 Apr 2008 16:16:46 +0000 (12:16 -0400)]
Btrfs: Fixup a few u64<->pointer casts for 32 bit
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 11 Apr 2008 14:51:07 +0000 (10:51 -0400)]
Btrfs: Add extra checks to avoid removing extent_state from pages we can't free
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 10 Apr 2008 20:19:33 +0000 (16:19 -0400)]
Btrfs: Write out all super blocks on commit, and bring back proper barrier support
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 10 Apr 2008 14:23:21 +0000 (10:23 -0400)]
Btrfs: Add O_DIRECT read and write (writes == buffered + cache flush)
This adds basic O_DIRECT read and write support. In the write case, we
just do a normal buffered write followed by a cache flush. O_DIRECT +
O_SYNC are required to trigger metadata syncs.
In the read case, there is a basic btrfs_get_block call for use by
the generic O_DIRECT code. This does honor multi-volume mapping rules
but it skips all checksumming.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 10 Apr 2008 14:23:19 +0000 (10:23 -0400)]
Btrfs: Disable extra debugging checks on tree blocks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 9 Apr 2008 20:28:12 +0000 (16:28 -0400)]
Btrfs: Handle checksumming errors while reading data blocks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 9 Apr 2008 20:28:12 +0000 (16:28 -0400)]
Btrfs: Retry metadata reads in the face of checksum failures
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 9 Apr 2008 20:28:12 +0000 (16:28 -0400)]
Btrfs: Handle data block end_io through the async work queue
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>
Chris Mason [Wed, 9 Apr 2008 20:28:12 +0000 (16:28 -0400)]
Btrfs: Do metadata checksums for reads via a workqueue
Before, metadata checksumming was done by the callers of read_tree_block,
which would set EXTENT_CSUM bits in the extent tree to show that a given
range of pages was already checksummed and didn't need to be verified
again.
But, those bits could go away via try_to_releasepage, and the end
result was bogus checksum failures on pages that never left the cache.
The new code validates checksums when the page is read. It is a little
tricky because metadata blocks can span pages and a single read may
end up going via multiple bios.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 9 Apr 2008 20:28:12 +0000 (16:28 -0400)]
Btrfs: Add additional debugging for metadata checksum failures
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 9 Apr 2008 20:28:12 +0000 (16:28 -0400)]
Change btrfs_map_block to return a structure with mappings for all stripes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 4 Apr 2008 19:40:00 +0000 (15:40 -0400)]
Btrfs: Fix allocation profile init
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 4 Apr 2008 19:40:00 +0000 (15:40 -0400)]
Btrfs: Don't allow written blocks from this transaction to be reallocated
When a block is freed, it can be immediately reused if it is from
the current transaction. But, an extra check is required to make sure
the block had not been written yet. If it were reused after being written,
the transid in the block header might match the transid of the
next time the block was allocated.
The parent node records the transaction ID of the block it is pointing to,
and this is used as part of validating the block on reads. So, there
can only be one version of a block per transaction.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 3 Apr 2008 20:29:03 +0000 (16:29 -0400)]
Btrfs: Add support for duplicate blocks on a single spindle
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 3 Apr 2008 20:29:03 +0000 (16:29 -0400)]
Btrfs: Add support for mirroring across drives
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 3 Apr 2008 20:29:02 +0000 (16:29 -0400)]
Btrfs: Properly dirty buffers in the split corner cases
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 1 Apr 2008 17:48:14 +0000 (13:48 -0400)]
Btrfs: Verify checksums on tree blocks found without read_tree_block
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>
Chris Mason [Tue, 1 Apr 2008 15:26:07 +0000 (11:26 -0400)]
Btrfs: Keep fs_mutex during reads done by snapshot deletion
There was an optimization to drop the fs_mutex when doing snapshot deletion
reads, but this can lead to false positives on checksumming errors. Keep
the lock for now.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Alex Chiang [Tue, 1 Apr 2008 15:21:40 +0000 (11:21 -0400)]
btrfs-progs: Stop stomping on 'name' input parameter
In btrfs_name_hash, Local variable 'buf' is declared as
__u32 buf[2];
but we then try to do this:
buf[0] = 0x67452301;
buf[1] = 0xefcdab89;
buf[2] = 0x98badcfe;
buf[3] = 0x10325476;
Oops. Fix buf to be the proper size.
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Peter [Tue, 1 Apr 2008 15:21:40 +0000 (11:21 -0400)]
Btrfs: Correct usage of IS_ERR() in extent_io.c
Signed-off-by: Peter Teoh <htmldeveloper@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Tue, 1 Apr 2008 15:21:34 +0000 (11:21 -0400)]
Fix btrfs_fill_super to return -EINVAL when no FS found
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 1 Apr 2008 15:21:32 +0000 (11:21 -0400)]
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>
Chris Mason [Wed, 26 Mar 2008 20:24:23 +0000 (16:24 -0400)]
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>
Chris Mason [Wed, 26 Mar 2008 16:02:55 +0000 (12:02 -0400)]
Btrfs: Use a higher default ra pages
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 26 Mar 2008 14:28:07 +0000 (10:28 -0400)]
Create a btrfs backing dev info
This allows intelligent versions of unplug and congestion functions
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 25 Mar 2008 20:50:33 +0000 (16:50 -0400)]
Btrfs: Implement raid0 when multiple devices are present
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 24 Mar 2008 19:02:07 +0000 (15:02 -0400)]
Btrfs: Add support for device scanning and detection ioctls
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 24 Mar 2008 19:02:07 +0000 (15:02 -0400)]
Btrfs: Bring back mount -o ssd optimizations
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 24 Mar 2008 19:02:07 +0000 (15:02 -0400)]
Btrfs: Move device information into the super block so it can be scanned
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 24 Mar 2008 19:02:07 +0000 (15:02 -0400)]
Btrfs: Make the FS tree the last objectid in the tree of tree roots
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 24 Mar 2008 19:02:04 +0000 (15:02 -0400)]
Add /dev/btrfs-control for device scanning ioctls
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 24 Mar 2008 19:02:03 +0000 (15:02 -0400)]
Btrfs: Bring back find_free_extent CPU usage optimizations
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 24 Mar 2008 19:01:59 +0000 (15:01 -0400)]
Btrfs: Dynamic chunk and block group allocation
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 24 Mar 2008 19:01:56 +0000 (15:01 -0400)]
Btrfs: Add support for multiple devices per filesystem
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 24 Mar 2008 19:01:28 +0000 (15:01 -0400)]
Match the extent tree code to btrfs-progs for multi-device merging
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 21 Feb 2008 14:30:08 +0000 (09:30 -0500)]
Btrfs: Use KM_USERN instead of KM_IRQ during data summing
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 20 Feb 2008 21:02:51 +0000 (16:02 -0500)]
Btrfs: Disable sysfs files on older kernels
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 20 Feb 2008 20:44:32 +0000 (15:44 -0500)]
Btrfs: Make sure bio pages are adjacent during bulk csumming
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 20 Feb 2008 21:11:05 +0000 (16:11 -0500)]
Btrfs: Misc 2.6.25 updates
Remove the btrfs read_inode method, and use save_mount_options
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Greg KH [Wed, 20 Feb 2008 19:14:16 +0000 (14:14 -0500)]
btrfs: fixes for kobject changes in mainline
Here's a patch against the unstable tree that gets the code to build
against Linus's current tree (2.6.24-git12). This is needed as the
kobject/kset api has changed there.
I tried to make the smallest changes needed, and it builds and loads
successfully, but I don't have a btrfs volume anywhere (yet) to try to
see if things still work properly :)
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 20 Feb 2008 17:07:25 +0000 (12:07 -0500)]
Btrfs: While doing checksums on bios, cache the extent_buffer mapping
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 20 Feb 2008 17:07:25 +0000 (12:07 -0500)]
Btrfs: checksum file data at bio submission time instead of during writepage
When we checkum file data during writepage, the checksumming is done one
page at a time, making it difficult to do bulk metadata modifications
to insert checksums for large ranges of the file at once.
This patch changes btrfs to checksum on a per-bio basis instead. The
bios are checksummed before they are handed off to the block layer, so
each bio is contiguous and only has pages from the same inode.
Checksumming on a bio basis allows us to insert and modify the file
checksum items in large groups. It also allows the checksumming to
be done more easily by async worker threads.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 19 Feb 2008 21:24:18 +0000 (16:24 -0500)]
Btrfs: Properly cast before shifting
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 19 Feb 2008 17:55:05 +0000 (12:55 -0500)]
Btrfs: Take the extent lock before dropping the delalloc bits
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan Zheng [Tue, 19 Feb 2008 16:41:02 +0000 (11:41 -0500)]
Btrfs: Fix looping on readdir of the subvol roots
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 19 Feb 2008 16:29:24 +0000 (11:29 -0500)]
Btrfs: Properly clear dirty and delalloc extent bits while preparing the file for write
Yan Zheng noticed that we don't clear the extent state tree dirty and delalloc
bits when we clear the dirty bits on the page during file write.
This leads to csum errors later on.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 18 Feb 2008 21:33:44 +0000 (16:33 -0500)]
Btrfs: Remove extent back refs in batches, and avoid duplicate searches
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 18 Feb 2008 17:12:38 +0000 (12:12 -0500)]
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>
Chris Mason [Fri, 15 Feb 2008 18:19:35 +0000 (13:19 -0500)]
Btrfs: Disable tree defrag in SSD mode
Signed-off-by: Chris Mason <chris.mason@oracle.com>
David Miller [Fri, 15 Feb 2008 15:40:52 +0000 (10:40 -0500)]
Btrfs: unaligned access fixes
Btrfs set/get macros lose type information needed to avoid
unaligned accesses on sparc64.
ere is a patch for the kernel bits which fixes most of the
unaligned accesses on sparc64.
btrfs_name_hash is modified to return the hash value instead
of getting a return location via a (potentially unaligned)
pointer.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Fri, 15 Feb 2008 15:40:50 +0000 (10:40 -0500)]
Btrfs: Fix "no csum found for inode" issue.
A few codes were not properly updated for changes of extent map. This
may be the causes of "no csum found for inode" issue.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 8 Feb 2008 18:49:28 +0000 (13:49 -0500)]
Btrfs: Fix i_blocks accounting
Now that delayed allocation accounting works, i_blocks accounting is changed
to only modify i_blocks when extents inserted or removed.
The fillattr call is changed to include the delayed allocation byte count
in the i_blocks result.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 7 Feb 2008 15:50:54 +0000 (10:50 -0500)]
Btrfs: Create larger bios for btree blocks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 6 Feb 2008 16:01:42 +0000 (11:01 -0500)]
Btrfs: Don't case unsigned long to int in bio submission
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 6 Feb 2008 15:00:57 +0000 (10:00 -0500)]
Btrfs: Use 2MB as the empty_size for clustered allocations
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Tue, 5 Feb 2008 20:40:36 +0000 (15:40 -0500)]
btrfs_drop_extents: handle BTRFS_INODE_REF_KEY types
It's possible "key.type == BTRFS_INODE_REF_KEY" and "key.offset >= end".
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 5 Feb 2008 15:20:17 +0000 (10:20 -0500)]
Btrfs: Add checks for last byte in disk to allocator grouping
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Tue, 5 Feb 2008 14:07:49 +0000 (09:07 -0500)]
Btrfs: Fix hole creation in file_write
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 4 Feb 2008 15:10:43 +0000 (10:10 -0500)]
Btrfs: Update magic
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Mon, 4 Feb 2008 15:10:13 +0000 (10:10 -0500)]
Btrfs: Add debugging for block group update failure
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Mon, 4 Feb 2008 13:57:25 +0000 (08:57 -0500)]
Btrfs: Fix typo in extent_io.c
---
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 1 Feb 2008 21:35:04 +0000 (16:35 -0500)]
Btrfs: Lower stack usage in transaction.c
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 1 Feb 2008 20:42:15 +0000 (15:42 -0500)]
Btrfs: Fix delalloc account on state deletion
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Fri, 1 Feb 2008 19:58:07 +0000 (14:58 -0500)]
Call btrfs_cow_block while lowering tree level.
When freeing root block of a tree, btrfs_free_extent' parameter
'ref_generation' is from root block itseft. When freeing non-root
block, 'ref_generation' is from its parent. so when converting a
non-root block to root block, we must guarantee its generation is
equal to its parent's generation.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 1 Feb 2008 19:51:59 +0000 (14:51 -0500)]
Btrfs: Use last_alloc optimizations for metadata, even without -o ssd
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 1 Feb 2008 19:51:59 +0000 (14:51 -0500)]
Btrfs: Hash in the offset and owner for file extent backref keys
This makes searches for backrefs and backref insertion much more efficient
when there are many backrefs for a single extent
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 1 Feb 2008 19:51:59 +0000 (14:51 -0500)]
Btrfs: Insert extent record and the first backref in a single balance
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 1 Feb 2008 19:51:59 +0000 (14:51 -0500)]
Btrfs: Add a lookup cache to the extent state tree
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 31 Jan 2008 21:45:07 +0000 (16:45 -0500)]
Btrfs: Add data block hints to SSD mode too
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 31 Jan 2008 16:05:37 +0000 (11:05 -0500)]
Btrfs: Enable delalloc accounting
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Wed, 30 Jan 2008 19:39:54 +0000 (14:39 -0500)]
btrfs_drop_extent fixe for inline items > 8K
When truncating a inline extent, btrfs_drop_extents doesn't properly
handle the case "key.offset > inline_limit". This bug can only happen
when max line size is larger than 8K.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 30 Jan 2008 19:33:02 +0000 (14:33 -0500)]
Fix hole start calculation in btrfs_settar
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 30 Jan 2008 16:54:05 +0000 (11:54 -0500)]
Properly align the hole size in btrfs_setattr
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Wed, 30 Jan 2008 16:54:04 +0000 (11:54 -0500)]
Btrfs: Align extent length to sectorsize in
---
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 30 Jan 2008 16:43:54 +0000 (11:43 -0500)]
Btrfs: Copy correct tree when inserting into slot 0
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 29 Jan 2008 21:06:37 +0000 (16:06 -0500)]
Btrfs: Leave on the tree defragger in mount -o ssd, it still helps there
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 29 Jan 2008 21:03:38 +0000 (16:03 -0500)]
Btrfs: mount -o max_inline=size to control the maximum inline extent size
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 29 Jan 2008 20:55:23 +0000 (15:55 -0500)]
Btrfs: Do delalloc accounting via hooks in the extent_state code
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 29 Jan 2008 20:15:18 +0000 (15:15 -0500)]
Btrfs: Add inode item and backref in one insert, reducing cpu usage
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 29 Jan 2008 20:11:36 +0000 (15:11 -0500)]
Btrfs: During deletes and truncate, remove many items at once from the tree
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 29 Jan 2008 14:59:12 +0000 (09:59 -0500)]
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>
Chris Mason [Tue, 29 Jan 2008 14:10:27 +0000 (09:10 -0500)]
Btrfs: Add some extra debugging around file data checksum failures
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 29 Jan 2008 14:10:26 +0000 (09:10 -0500)]
Btrfs: Force f_pos to the max when a readdir hits the end of the directory.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 24 Jan 2008 21:13:14 +0000 (16:13 -0500)]
Btrfs: Tune readahead during defrag to avoid reading too much at once
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 24 Jan 2008 21:13:08 +0000 (16:13 -0500)]
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>
Chris Mason [Tue, 22 Jan 2008 21:47:59 +0000 (16:47 -0500)]
Btrfs: Fix hole insertion corner cases
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>
Chris Mason [Tue, 22 Jan 2008 17:46:56 +0000 (12:46 -0500)]
Btrfs: Include sched.h in the acl code for current (fixes compile on 2.6.23)
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Tue, 22 Jan 2008 17:46:56 +0000 (12:46 -0500)]
Btrfs: Add basic lockfs calls
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Tue, 22 Jan 2008 17:46:56 +0000 (12:46 -0500)]
Btrfs: Fix for test_range_bit
test_range_bit doesn't properly handle the case: there's a hole at the
end of the range and there's no other extent_state after the range.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Tue, 22 Jan 2008 17:46:56 +0000 (12:46 -0500)]
Fix for btrfs_find_free_objectid
btrfs_find_free_objectid may return a used objectid due to arithmetic
underflow. This bug may happen when parameter 'root' is tree root, so
it may cause serious problems when creating snapshot or sub-volume.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Fri, 18 Jan 2008 15:54:22 +0000 (10:54 -0500)]
Btrfs: Add mount -o ssd, which includes optimizations for seek free storage
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 17 Jan 2008 17:01:41 +0000 (12:01 -0500)]
Btrfs: Use blk_congestion_wait on older kernels
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Thu, 17 Jan 2008 16:59:51 +0000 (11:59 -0500)]
Btrfs: Fix compile on 2.6.22 kernel
This patch fixes compile error on kernel-2.6.22
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan [Thu, 17 Jan 2008 16:59:48 +0000 (11:59 -0500)]
Btrfs: Fix compile on kernel without ACLs enabled
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 16 Jan 2008 21:09:22 +0000 (16:09 -0500)]
Btrfs: Fix data=ordered vs wait_on_inode deadlock on older kernels
Using ilookup5 during data=ordered writeback could deadlock on I_LOCK. This
saves a pointer to the inode instead.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Wed, 16 Jan 2008 16:44:43 +0000 (11:44 -0500)]
Btrfs: Run igrab on data=ordered inodes to prevent deadlocks during writeout
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 15 Jan 2008 13:44:06 +0000 (08:44 -0500)]
Btrfs: Disable delalloc accounting for now
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Tue, 15 Jan 2008 13:40:48 +0000 (08:40 -0500)]
Rework btrfs_drop_inode to avoid scheduling
Signed-off-by: Chris Mason <chris.mason@oracle.com>
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / log