Commit Graph

391 Commits

Author SHA1 Message Date
Chris Mason
85e21bac16 Btrfs: During deletes and truncate, remove many items at once from the tree
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
aadfeb6e39 Btrfs: Add some extra debugging around file data checksum failures
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
c2a8b6e110 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>
2008-09-25 11:03:59 -04:00
Chris Mason
bea495e5b4 Btrfs: Tune readahead during defrag to avoid reading too much at once
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
5f56406aab 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>
2008-09-25 11:03:59 -04:00
Chris Mason
c1e32da616 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>
2008-09-25 11:03:59 -04:00
Yan
ed0dab6b86 Btrfs: Add basic lockfs calls
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Yan
f0c5da1446 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>
2008-09-25 11:03:59 -04:00
Yan
b17854275c 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>
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
Yan
fb4bc1e056 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>
2008-09-25 11:03:59 -04:00
Yan
caaca38b8f Btrfs: Fix compile on kernel without ACLs enabled
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
4d5e74bc0a 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>
2008-09-25 11:03:59 -04:00
Chris Mason
2da98f003f Btrfs: Run igrab on data=ordered inodes to prevent deadlocks during writeout
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
9cce6c3bfc Btrfs: Disable delalloc accounting for now
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
61295eb866 Btrfs: Add drop inode func to avoid data=ordered deadlock
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
8c416c9e0d Btrfs: Delete any remaining extent_maps before freeing the inode
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
69a32ac517 Btrfs: Change magic string to reflect new format
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Yan
fdebe2bd70 Btrfs: Add readonly inode flag
This patch adds readonly inode flag support.  A file with this flag
can't be modified, but can be deleted.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Yan
744f52f997 Btrfs: Implement ACLs setting and getting
ACLs are stored but not used for permission checks (yet)

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
b3a0d8d28c Btrfs: Remove verbose WARN_ON
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
bcd987feef Btrfs: Remove extent_map debugging message
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Yan
b98b6767a0 Btrfs: Add inode flags support
This patch adds NODATASUM & NODATACOW inode flags support.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
c31f8830f0 Btrfs: online shrinking fixes
While shrinking the FS, the allocation functions need to make sure
they don't try to allocate bytes past the end of the FS.

nodatacow needed an extra check to force cows when the existing extents are
past the end of the FS.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
b0331a4c4c Btrfs: Disable btree reada during extent backref lookups.
This reada is generally not effective.

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
3063d29f2a Btrfs: Move snapshot creation to commit time
It is very difficult to create a consistent snapshot of the btree when
other writers may update the btree before the commit is done.

This changes the snapshot creation to happen during the commit, while
no other updates are possible.

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
725c8463ea Btrfs: resizer: don't hold the fs_mutex for long periods of time
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
1372f8e609 Properly call btrfs_search_slot while shrinking
The shrinking code used btrfs_next_leaf to find the next item, but
this does not cow the blocks it touches.  This fix calls search_slot after
finding the next item to do appropriate cow and balancing.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
2552488345 Btrfs: Lower the max inline size to 8k
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Chris Mason
d666746207 Btrfs: Change st_blocksize to 4k
Some programs (python) do rwm cycles at the granularity returned by
stat.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
Yan
73e48b277a Btrfs: Properly handle overlapping extent in shrink_extent_tree
The patch fixes the overlapping extent issue in shrink_extent_tree.
It checks whether there is an overlapping extent by using
find_previous_extent. If there is an overlapping extent, it setups
key.objectid and cur_byte properly.

---

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Yan
d548ee5182 Btrfs: Add a helper that finds previous extent item
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Chris Mason
5b92ee7204 Btrfs: Fix lock ordering of the snapshot semaphore against the page lock
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Chris Mason
bd09835d9a count_snapshots: Properly update the leaf pointer after btrfs_next_leaf
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Chris Mason
98ed51747b Btrfs: Force inlining off in a few places to save stack usage
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Chris Mason
f9ef6604ac Btrfs: 32 bit compile fixes for the resizer and enospc checks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -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
56b453c92f Btrfs: Explicitly send a root objectid to count_snapshots_in_path
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Chris Mason
8f662a76c6 Btrfs: Add readahead to the online shrinker, and a mount -o alloc_start= for testing
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Chris Mason
e52ec0eb62 Btrfs: Fix NULL block groups on reading the inode
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00