Commit Graph

379 Commits

Author SHA1 Message Date
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
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 5d4fb734b4 Btrfs: Fix an off by one in the extent_map prepare write code
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 01f4665805 Btrfs: Less aggressive readahead on deletes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Chris Mason 879c1cfc31 Btrfs: Fix nodatacow extent lookup
Yan Zheng noticed the offset into the extent was incorrectly being added to the
extent start before trying to find it in the extent allocation tree.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Chris Mason 190662b212 Btrfs: Fix delayed allocation to avoid missing delalloc extents
find_lock_delalloc_range could exit out too early

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Chris Mason 4aec2b5232 kmalloc a few large stack objects in the btrfs_ioctl path
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 be20aa9dba Btrfs: Add mount option to turn off data cow
A number of workloads do not require copy on write data or checksumming.
mount -o nodatasum to disable checksums and -o nodatacow to disable
both copy on write and checksumming.

In nodatacow mode, copy on write is still performed when a given extent
is under snapshot.

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