d666746207
Btrfs: Change st_blocksize to 4k
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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)
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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
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
1832a6d5ee
Btrfs: Implement basic support for -ENOSPC
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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
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
879c1cfc31
Btrfs: Fix nodatacow extent lookup
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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
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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
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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
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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
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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
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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
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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
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
e9906a9849
Fixes for loopback files in btrfs
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
6e3b96668e
Off by one fix for btrfs_drop_extents
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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
f6dbff55d7
Btrfs: Reorder extent back refs to differentiate btree blocks from file data
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
6caab489c5
Fix btrfs_inc_ref to add backref hints
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
7a7205367d
Btrfs: Fix typo in .. check (thanks Yan)
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
76fea00a05
Btrfs: Add backrefs for symbolic link inodes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
70b043f0c7
Btrfs: Extra NULL block group checks in find_free_extent
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
3954401fa6
Btrfs: Add back pointers from the inode to the directory that references it
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
d8d5f3e16d
Btrfs: Add lowest key information to back refs for extent tree blocks as well.
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
7bb86316c3
Btrfs: Add back pointers from extents to the btree or file referencing them
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
74493f7a59
Btrfs: Implement generation numbers in block pointers
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
17636e03f4
Btrfs: section mismatch warnings
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--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
9691975dd6
Btrfs: Fix buffer get/release issue in create_snapshot
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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
1a2b2ac78a
Btrfs: Fix extent allocation for btree blocks as the disk fills
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
87ee04eb0f
Btrfs: Add simple stripe size parameter
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
00f5c795fc
btrfs_drop_extents: make sure the item is getting smaller before truncate
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
ca6646264b
Btrfs: Add efficient dirty accounting to the extent_map tree
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
448d640b66
Btrfs: Fine tune the btree writeback exclusion some more
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
8790bad7fb
Btrfs: Only limit btree writeback for pdflush
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
793955bca6
Btrfs: Limit btree writeback to prevent seeks
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
015a739c7c
Btrfs: Handle writeback under high memory pressure better
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
eef1c494a2
Btrfs: Properly update right_nritems in push_leaf_left
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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
0e4de58432
Btrfs: Add check for null block group to find_search_start
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
7073c8e852
Btrfs: Make sure page mapping dirty tag is properly cleared
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
3e9fd94ff0
Btrfs: Avoid fragmentation from parallel delalloc filling
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
2f4cbe6442
Btrfs: Return value checking in module init
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:58 -04:00
3acd7ee876
Btrfs: xattr fixes
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This fixes two typos that Yan pointed out to me. Thanks much,
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:03:57 -04:00
Chris Mason