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361 Commits 2 Branches 693 Tags 3.5 GiB
1372f8e609
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354 Commits

Author SHA1 Message Date
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
Chris Mason
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
6e3b96668e Off by one fix for btrfs_drop_extents 
One of my old patches introduces a new bug to
btrfs_drop_extents(changeset 275). Inline extents are not truncated
properly when "extent_end == end", it can trigger the BUG_ON at
file.c:600.  I hope I don't introduce new bug this time.

---

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
f6dbff55d7 Btrfs: Reorder extent back refs to differentiate btree blocks from file data 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
6caab489c5 Fix btrfs_inc_ref to add backref hints 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
7a7205367d Btrfs: Fix typo in .. check (thanks Yan) 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
76fea00a05 Btrfs: Add backrefs for symbolic link inodes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
70b043f0c7 Btrfs: Extra NULL block group checks in find_free_extent 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
3954401fa6 Btrfs: Add back pointers from the inode to the directory that references it 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
d8d5f3e16d Btrfs: Add lowest key information to back refs for extent tree blocks as well. 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -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
Chris Mason
74493f7a59 Btrfs: Implement generation numbers in block pointers 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Christian Hesse
17636e03f4 Btrfs: section mismatch warnings 
--Boundary-00=_CcOWHFYK4T+JwSj
Content-Type: text/plain;
  charset="iso-8859-1"
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Hello everybody,

compiling btrfs into the kernel results in section mismatch warnings. __exit
functions are called where they are not allowed to. The attached patch fixes
this for me. Not sure if it is correct though.

Signed-off-by: Christian Hesse <mail@earthworm.de>
--
Regards,
Chris

--Boundary-00=_CcOWHFYK4T+JwSj
Content-Type: text/x-diff; charset="iso-8859-1";
	name="btrfs-section_mismatches.patch"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
	filename="btrfs-section_mismatches.patch"

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Yan
9691975dd6 Btrfs: Fix buffer get/release issue in create_snapshot 
btrfs_cow_block expects a reference to be held on the buffer being cow'd.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
1a2b2ac78a Btrfs: Fix extent allocation for btree blocks as the disk fills 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
87ee04eb0f Btrfs: Add simple stripe size parameter 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
00f5c795fc btrfs_drop_extents: make sure the item is getting smaller before truncate 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
ca6646264b Btrfs: Add efficient dirty accounting to the extent_map tree 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
448d640b66 Btrfs: Fine tune the btree writeback exclusion some more 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
8790bad7fb Btrfs: Only limit btree writeback for pdflush 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
793955bca6 Btrfs: Limit btree writeback to prevent seeks 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
015a739c7c Btrfs: Handle writeback under high memory pressure better 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Yan
eef1c494a2 Btrfs: Properly update right_nritems in push_leaf_left 
The codes that fixup the right leaf and the codes that dirty the
extnet buffer use the variable 'right_nritems' ,  both of them expect
'right_nritems' is the number of items in right leaf after the push.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
0e4de58432 Btrfs: Add check for null block group to find_search_start 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
7073c8e852 Btrfs: Make sure page mapping dirty tag is properly cleared 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
3e9fd94ff0 Btrfs: Avoid fragmentation from parallel delalloc filling 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00