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
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
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
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
9cce6c3bfc
Btrfs: Disable delalloc accounting for now
...
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
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
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
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
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
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
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
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
b3a0d8d28c
Btrfs: Remove verbose WARN_ON
...
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
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
21ad10cf3e
Btrfs: Add flush barriers on commit
...
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
bcd987feef
Btrfs: Remove extent_map debugging message
...
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:59 -04:00
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
01f4665805
Btrfs: Less aggressive readahead on deletes
...
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
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
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
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
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
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
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
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
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
e9906a9849
Fixes for loopback files in btrfs
...
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
Yan