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The sectorsize member of btrfs_block_group_cache is unused. So remove it, this
reduces the number of holes in the struct.
With patch:
/* size: 856, cachelines: 14, members: 40 */
/* sum members: 837, holes: 4, sum holes: 19 */
/* bit holes: 1, sum bit holes: 29 bits */
/* last cacheline: 24 bytes */
Without patch:
/* size: 864, cachelines: 14, members: 41 */
/* sum members: 841, holes: 5, sum holes: 23 */
/* bit holes: 1, sum bit holes: 29 bits */
/* last cacheline: 32 bytes */
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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We track the node sizes per-root, but they never vary from the values
in the superblock. This patch messes with the 80-column style a bit,
but subsequent patches to factor out root->fs_info into a convenience
variable fix it up again.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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The recommended way is to put all members on separate lines.
Signed-off-by: David Sterba <dsterba@suse.com>
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We don't change the given extent ranges, mark them const to catch
accidental changes.
Signed-off-by: David Sterba <dsterba@suse.com>
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The free space tree format conversion functions were broken on
big-endian systems, but the sanity tests didn't catch it because all of
the operations were aligned to multiple words. This was meant to catch
any bugs in the extent buffer code's handling of high memory, but it
ended up hiding the endianness bug. Expand the tests to do both
sector-aligned and page-aligned operations.
Tested-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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This allows the upcoming patchset to push nodesize and sectorsize into
fs_info.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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self-tests code assumes 4k as the sectorsize and nodesize. This commit
fix hardcoded 4K. Enables the self-tests code to be executed on non-4k
page sized systems (e.g. ppc64).
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Feifei Xu <xufeifei@linux.vnet.ibm.com>
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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When starting up linux with btrfs filesystem, I got many memory leak
messages by kmemleak as,
unreferenced object 0xffff880066882000 (size 4096):
comm "modprobe", pid 730, jiffies 4294690024 (age 196.599s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff8174d52e>] kmemleak_alloc+0x4e/0xb0
[<ffffffff811d09aa>] kmem_cache_alloc_trace+0xea/0x1e0
[<ffffffffa03620fb>] btrfs_alloc_dummy_fs_info+0x6b/0x2a0 [btrfs]
[<ffffffffa03624fc>] btrfs_alloc_dummy_block_group+0x5c/0x120 [btrfs]
[<ffffffffa0360aa9>] btrfs_test_free_space_cache+0x39/0xed0 [btrfs]
[<ffffffffa03b5a74>] trace_raw_output_xfs_attr_class+0x54/0xe0 [xfs]
[<ffffffff81002122>] do_one_initcall+0xb2/0x1f0
[<ffffffff811765aa>] do_init_module+0x5e/0x1e9
[<ffffffff810fec09>] load_module+0x20a9/0x2690
[<ffffffff810ff439>] SyS_finit_module+0xb9/0xf0
[<ffffffff81757daf>] entry_SYSCALL_64_fastpath+0x12/0x76
[<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff8800573f8000 (size 10256):
comm "modprobe", pid 730, jiffies 4294690185 (age 196.460s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff8174d52e>] kmemleak_alloc+0x4e/0xb0
[<ffffffff8119ca6e>] kmalloc_order+0x5e/0x70
[<ffffffff8119caa4>] kmalloc_order_trace+0x24/0x90
[<ffffffffa03620b3>] btrfs_alloc_dummy_fs_info+0x23/0x2a0 [btrfs]
[<ffffffffa03624fc>] btrfs_alloc_dummy_block_group+0x5c/0x120 [btrfs]
[<ffffffffa036603d>] run_test+0xfd/0x320 [btrfs]
[<ffffffffa0366f34>] btrfs_test_free_space_tree+0x94/0xee [btrfs]
[<ffffffffa03b5aab>] trace_raw_output_xfs_attr_class+0x8b/0xe0 [xfs]
[<ffffffff81002122>] do_one_initcall+0xb2/0x1f0
[<ffffffff811765aa>] do_init_module+0x5e/0x1e9
[<ffffffff810fec09>] load_module+0x20a9/0x2690
[<ffffffff810ff439>] SyS_finit_module+0xb9/0xf0
[<ffffffff81757daf>] entry_SYSCALL_64_fastpath+0x12/0x76
[<ffffffffffffffff>] 0xffffffffffffffff
This patch lets btrfs using fs_info stored in btrfs_root for
block group cache directly without allocating a new one.
Fixes: d0bd456074 ("Btrfs: add fragment=* debug mount option")
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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This tests the operations on the free space tree trying to excercise all
of the main cases for both formats. Between this and xfstests, the free
space tree should have pretty good coverage.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
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