Commit Graph

89 Commits

Author SHA1 Message Date
Yan bcc63abbf3 Btrfs: implement memory reclaim for leaf reference cache
The memory reclaiming issue happens when snapshot exists. In that
case, some cache entries may not be used during old snapshot dropping,
so they will remain in the cache until umount.

The patch adds a field to struct btrfs_leaf_ref to record create time. Besides,
the patch makes all dead roots of a given snapshot linked together in order of
create time. After a old snapshot was completely dropped, we check the dead
root list and remove all cache entries created before the oldest dead root in
the list.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:05 -04:00
Chris Mason ca7a79ad8d Btrfs: Pass down the expected generation number when reading tree blocks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:03 -04:00
Chris Mason e17cade25f Btrfs: Add chunk uuids and update multi-device back references
Block headers now store the chunk tree uuid

Chunk items records the device uuid for each stripes

Device extent items record better back refs to the chunk tree

Block groups record better back refs to the chunk tree

The chunk tree format has also changed.  The objectid of BTRFS_CHUNK_ITEM_KEY
used to be the logical offset of the chunk.  Now it is a chunk tree id,
with the logical offset being stored in the offset field of the key.

This allows a single chunk tree to record multiple logical address spaces,
upping the number of bytes indexed by a chunk tree from 2^64 to
2^128.

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 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 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
Josef Bacik 5103e947b9 xattr support for btrfs
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:57 -04:00
Chris Mason db94535db7 Btrfs: Allow tree blocks larger than the page size
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:56 -04:00
Chris Mason 5f39d397df Btrfs: Create extent_buffer interface for large blocksizes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:56 -04:00
Zach Brown ec6b910fb3 Btrfs: trivial include fixups
Almost none of the files including module.h need to do so,
remove them.

Include sched.h in extent-tree.c to silence a warning about cond_resched()
being undeclared.

Signed-off-by: Zach Brown <zach.brown@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-07-11 10:00:37 -04:00
Chris Mason 8c2383c3dd Subject: Rework btrfs_file_write to only allocate while page locks are held
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-18 09:57:58 -04:00
Chris Mason 6cbd557078 Btrfs: add GPLv2
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-12 09:07:21 -04:00
Chris Mason 5af3981c18 Btrfs: printk fixes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-12 07:50:13 -04:00
Chris Mason 35b7e47610 Btrfs: fix page cache memory leak
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-05-02 15:53:43 -04:00
Chris Mason 9078a3e1e4 Btrfs: start of block group code
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-26 16:46:15 -04:00
Chris Mason a429e51371 Btrfs: working file_write, reorganized key flags
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-18 16:15:28 -04:00
Chris Mason d0dbc6245c Btrfs: drop owner and parentid
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-10 12:36:36 -04:00
Chris Mason 1b05da2ee6 Btrfs: drop the inode map tree
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-10 12:13:09 -04:00
Chris Mason d6e4a428eb Btrfs: start of support for many FS volumes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-06 15:37:36 -04:00
Chris Mason e20d96d64f Mountable btrfs, with readdir
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-22 12:13:20 -04:00
Chris Mason 2e635a2783 Btrfs: initial move to kernel module land
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-21 11:12:56 -04:00
Chris Mason 293ffd5fd3 Btrfs: change dir-test to insert inode_items
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-20 15:57:25 -04:00
Chris Mason 9f5fae2fe6 Btrfs: Add inode map, and the start of file extent items
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-20 14:38:32 -04:00
Chris Mason a8a2ee0c60 Btrfs: add a name_len to dir items, reorder key
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-16 08:46:49 -04:00
Chris Mason 1d4f6404de Btrfs: directory testing code and dir item fixes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-15 15:18:43 -04:00
Chris Mason 62e2749e03 Btrfs: Use a chunk of the key flags to record the item type.
Add (untested and simple) directory item code
Fix comp_keys to use the new key ordering
Add btrfs_insert_empty_item

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-15 12:56:47 -04:00
Chris Mason a1516c8921 Btrfs: reorder key offset and flags
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-14 14:26:53 -04:00
Chris Mason 123abc88c9 Btrfs: variable block size support
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-14 14:14:43 -04:00
Chris Mason 4beb1b8b75 Btrfs: add leaf data casting helper
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-14 10:31:29 -04:00
Chris Mason 3768f3689f Btrfs: Change the super to point to a tree of trees to enable persistent snapshots
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-13 16:47:54 -04:00
Chris Mason 234b63a091 rename funcs and structs to btrfs
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-13 10:46:10 -04:00
Chris Mason 1d4f8a0c1e Btrfs: node->blockptrs endian fixes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-13 09:28:32 -04:00
Chris Mason 0783fcfc4d Btrfs: struct item endian fixes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-12 20:12:07 -04:00
Chris Mason 7518a238ea Btrfs: get/set for struct header fields
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-12 12:01:18 -04:00
Chris Mason a28ec19775 Btrfs: Fixup reference counting on cows
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-03-06 20:08:01 -05:00
Chris Mason d16302ab0e Btrfs: more 32 bit cleanups
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-02-26 14:26:58 -05:00
Chris Mason 41903fe666 Btrfs: 32bit cleanups
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-02-26 10:55:42 -05:00
Chris Mason 7cf75962ac Btrfs: u64 cleanups
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-02-26 10:55:01 -05:00
Chris Mason 5de08d7d50 Btrfs: Break up ctree.c a little
Extent fixes

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-02-24 06:24:44 -05:00