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2017-08-16btrfs: remove unused sectorsize memberNikolay Borisov
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>
2017-06-19Btrfs: replace tree->mapping with tree->private_dataJosef Bacik
For extent_io tree's we have carried the address_mapping of the inode around in the io tree in order to pull the inode back out for calling into various tree ops hooks. This works fine when everything that has an extent_io_tree has an inode. But we are going to remove the btree_inode, so we need to change this. Instead just have a generic void * for private data that we can initialize with, and have all the tree ops use that instead. This had a lot of cascading changes but should be relatively straightforward. Signed-off-by: Josef Bacik <jbacik@fb.com> Reviewed-by: Chandan Rajendra <chandan@linux.vnet.ibm.com> Reviewed-by: David Sterba <dsterba@suse.com> [ minor reordering of the callback prototypes ] Signed-off-by: David Sterba <dsterba@suse.com>
2017-04-18btrfs: remove unused qgroup members from btrfs_trans_handleDavid Sterba
The members have been effectively unused since "Btrfs: rework qgroup accounting" (fcebe4562dec83b3), there's no substitute for assert_qgroups_uptodate so it's removed as well. Reviewed-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-28btrfs: Make get_extent_t take btrfs_inodeNikolay Borisov
In addition to changing the signature, this patch also switches all the functions which are used as an argument to also take btrfs_inode. Namely those are: btrfs_get_extent and btrfs_get_extent_filemap. Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-28btrfs: Make btrfs_drop_extent_cache take btrfs_inodeNikolay Borisov
Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-12-16Merge branch 'for-linus-4.10' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs updates from Chris Mason: "Jeff Mahoney and Dave Sterba have a really nice set of cleanups in here, and Christoph pitched in corrections/improvements to make btrfs use proper helpers for bio walking instead of doing it by hand. There are some key fixes as well, including some long standing bugs that took forever to track down in btrfs_drop_extents and during balance" * 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (77 commits) btrfs: limit async_work allocation and worker func duration Revert "Btrfs: adjust len of writes if following a preallocated extent" Btrfs: don't WARN() in btrfs_transaction_abort() for IO errors btrfs: opencode chunk locking, remove helpers btrfs: remove root parameter from transaction commit/end routines btrfs: split btrfs_wait_marked_extents into normal and tree log functions btrfs: take an fs_info directly when the root is not used otherwise btrfs: simplify btrfs_wait_cache_io prototype btrfs: convert extent-tree tracepoints to use fs_info btrfs: root->fs_info cleanup, access fs_info->delayed_root directly btrfs: root->fs_info cleanup, add fs_info convenience variables btrfs: root->fs_info cleanup, update_block_group{,flags} btrfs: root->fs_info cleanup, lock/unlock_chunks btrfs: root->fs_info cleanup, btrfs_calc_{trans,trunc}_metadata_size btrfs: pull node/sector/stripe sizes out of root and into fs_info btrfs: root->fs_info cleanup, io_ctl_init btrfs: root->fs_info cleanup, use fs_info->dev_root everywhere btrfs: struct reada_control.root -> reada_control.fs_info btrfs: struct btrfsic_state->root should be an fs_info btrfs: alloc_reserved_file_extent trace point should use extent_root ...
2016-12-14radix-tree: improve multiorder iteratorsMatthew Wilcox
This fixes several interlinked problems with the iterators in the presence of multiorder entries. 1. radix_tree_iter_next() would only advance by one slot, which would result in the iterators returning the same entry more than once if there were sibling entries. 2. radix_tree_next_slot() could return an internal pointer instead of a user pointer if a tagged multiorder entry was immediately followed by an entry of lower order. 3. radix_tree_next_slot() expanded to a lot more code than it used to when multiorder support was compiled in. And I wasn't comfortable with entry_to_node() being in a header file. Fixing radix_tree_iter_next() for the presence of sibling entries necessarily involves examining the contents of the radix tree, so we now need to pass 'slot' to radix_tree_iter_next(), and we need to change the calling convention so it is called *before* dropping the lock which protects the tree. Also rename it to radix_tree_iter_resume(), as some people thought it was necessary to call radix_tree_iter_next() each time around the loop. radix_tree_next_slot() becomes closer to how it looked before multiorder support was introduced. It only checks to see if the next entry in the chunk is a sibling entry or a pointer to a node; this should be rare enough that handling this case out of line is not a performance impact (and such impact is amortised by the fact that the entry we just processed was a multiorder entry). Also, radix_tree_next_slot() used to force a new chunk lookup for untagged entries, which is more expensive than the out of line sibling entry skipping. Link: http://lkml.kernel.org/r/1480369871-5271-55-git-send-email-mawilcox@linuxonhyperv.com Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-14btrfs: fix race in btrfs_free_dummy_fs_info()Matthew Wilcox
We drop the lock which protects the radix tree, so we must call radix_tree_iter_next() in order to avoid a modification to the tree invalidating the iterator state. Link: http://lkml.kernel.org/r/1480369871-5271-54-git-send-email-mawilcox@linuxonhyperv.com Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-06btrfs: pull node/sector/stripe sizes out of root and into fs_infoJeff Mahoney
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>
2016-11-30btrfs: remove constant parameter to memset_extent_buffer and rename itDavid Sterba
The only memset we do is to 0, so sink the parameter to the function and simplify all calls. Rename the function to reflect the behaviour. Signed-off-by: David Sterba <dsterba@suse.com>
2016-10-12Merge branch 'fst-fixes' of ↵Chris Mason
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.9 Signed-off-by: Chris Mason <clm@fb.com>
2016-10-03btrfs: tests: uninline member definitions in free_space_extentDavid Sterba
The recommended way is to put all members on separate lines. Signed-off-by: David Sterba <dsterba@suse.com>
2016-10-03btrfs: tests: constify free space extent specsDavid Sterba
We don't change the given extent ranges, mark them const to catch accidental changes. Signed-off-by: David Sterba <dsterba@suse.com>
2016-10-03Btrfs: expand free space tree sanity tests to catch endianness bugOmar Sandoval
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>
2016-10-03Btrfs: fix extent buffer bitmap tests on big-endian systemsOmar Sandoval
The in-memory bitmap code manipulates words and is therefore sensitive to endianness, while the extent buffer bitmap code addresses bytes and is byte-order agnostic. Because the byte addressing of the extent buffer bitmaps is equivalent to a little-endian in-memory bitmap, the extent buffer bitmap tests fail on big-endian systems. 34b3e6c92af1 ("Btrfs: self-tests: Fix extent buffer bitmap test fail on BE system") worked around another endianness bug in the tests but missed this one because ed9e4afdb055 ("Btrfs: self-tests: Execute page straddling test only when nodesize < PAGE_SIZE") disables this part of the test on ppc64. That change lost the original meaning of the test, however. We really want to test that an equivalent series of operations using the in-memory bitmap API and the extent buffer bitmap API produces equivalent results. To fix this, don't use memcmp_extent_buffer() or write_extent_buffer(); do everything bit-by-bit. Reported-by: Anatoly Pugachev <matorola@gmail.com> Tested-by: Anatoly Pugachev <matorola@gmail.com> Tested-by: Feifei Xu <xufeifei@linux.vnet.ibm.com> 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>
2016-09-26Btrfs: add a flags field to btrfs_fs_infoJosef Bacik
We have a lot of random ints in btrfs_fs_info that can be put into flags. This is mostly equivalent with the exception of how we deal with quota going on or off, now instead we set a flag when we are turning it on or off and deal with that appropriately, rather than just having a pending state that the current quota_enabled gets set to. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-09-26btrfs: extend btrfs_set_extent_delalloc and its friends to support in-band ↵Qu Wenruo
dedupe and subpage size patchset Extend btrfs_set_extent_delalloc() and extent_clear_unlock_delalloc() parameters for both in-band dedupe and subpage sector size patchset. This should reduce conflict of both patchset and the effort to rebase them. Cc: Chandan Rajendra <chandan@linux.vnet.ibm.com> Cc: David Sterba <dsterba@suse.cz> Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-07-26btrfs: tests, require fs_info for rootJeff Mahoney
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>
2016-07-26btrfs: tests, move initialization into tests/Jeff Mahoney
We have all these stubs that only exist because they're called from btrfs_run_sanity_tests, which is a static inside super.c. Let's just move it all into tests/btrfs-tests.c and only have one stub. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-06-23Btrfs: fix error return code in btrfs_init_test_fs()Wei Yongjun
Fix to return a negative error code from the kern_mount() error handling case instead of 0(ret is set to 0 by register_filesystem), as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Reviewed-by: Omar Sandoval <osandov@fb.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Chris Mason <clm@fb.com>
2016-06-06Btrfs: self-tests: Fix extent buffer bitmap test fail on BE systemFeifei Xu
In __test_eb_bitmaps(), we write random data to a bitmap. Then copy the bitmap to another bitmap that resides inside an extent buffer. Later we verify the values of corresponding bits in the bitmap and the bitmap inside the extent buffer. However, extent_buffer_test_bit() reads in byte granularity while test_bit() reads in unsigned long granularity. Hence we end up comparing wrong bits on big-endian systems such as ppc64. This commit fixes the issue by reading the bitmap in byte granularity. Reviewed-by: Josef Bacik <jbacik@fb.com> Reviewed-by: Chandan Rajendra <chandan@linux.vnet.ibm.com> Signed-off-by: Feifei Xu <xufeifei@linux.vnet.ibm.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-06-06Btrfs: self-tests: Fix test_bitmaps fail on 64k sectorsizeFeifei Xu
With 64K sectorsize, 1G sized block group cannot span across bitmaps. To execute test_bitmaps() function, this commit allocates "BITS_PER_BITMAP * sectorsize + PAGE_SIZE" sized block group. Reviewed-by: Josef Bacik <jbacik@fb.com> Reviewed-by: Chandan Rajendra <chandan@linux.vnet.ibm.com> Signed-off-by: Feifei Xu <xufeifei@linux.vnet.ibm.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-06-06Btrfs: self-tests: Use macros instead of constants and add missing newlineFeifei Xu
This commit replaces numerical constants with appropriate preprocessor macros. Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com> Signed-off-by: Feifei Xu <xufeifei@linux.vnet.ibm.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-06-06Btrfs: self-tests: Execute page straddling test only when nodesize < PAGE_SIZEFeifei Xu
On ppc64, PAGE_SIZE is 64k which is same as BTRFS_MAX_METADATA_BLOCKSIZE. In such a scenario, we will never be able to have an extent buffer containing more than one page. Hence in such cases this commit does not execute the page straddling tests. 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>
2016-06-02Btrfs: self-tests: Support non-4k page sizeFeifei Xu
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>
2016-06-02Btrfs: Fix integer overflow when calculating bytes_per_bitmapFeifei Xu
On ppc64, bytes_per_bitmap will be (65536*8*65536). Hence append UL to fix integer overflow. Reviewed-by: Josef Bacik <jbacik@fb.com> Reviewed-by: Chandan Rajendra <chandan@linux.vnet.ibm.com> Signed-off-by: Feifei Xu <xufeifei@linux.vnet.ibm.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-05-25btrfs: fix string and comment grammatical issues and typosNicholas D Steeves
Signed-off-by: Nicholas D Steeves <nsteeves@gmail.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-04-29btrfs: sink gfp parameter to set_extent_delallocDavid Sterba
Callers pass GFP_NOFS and tests pass GFP_KERNEL, but using NOFS there does not hurt. No need to pass the flags around. Signed-off-by: David Sterba <dsterba@suse.com>
2016-04-29btrfs: sink gfp parameter to clear_extent_bitsDavid Sterba
Callers pass GFP_NOFS and GFP_KERNEL. No need to pass the flags around. Signed-off-by: David Sterba <dsterba@suse.com>
2016-04-04mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usageKirill A. Shutemov
Mostly direct substitution with occasional adjustment or removing outdated comments. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-04mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macrosKirill A. Shutemov
PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. We have many places where PAGE_CACHE_SIZE assumed to be equal to PAGE_SIZE. And it's constant source of confusion on whether PAGE_CACHE_* or PAGE_* constant should be used in a particular case, especially on the border between fs and mm. Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much breakage to be doable. Let's stop pretending that pages in page cache are special. They are not. The changes are pretty straight-forward: - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN}; - page_cache_get() -> get_page(); - page_cache_release() -> put_page(); This patch contains automated changes generated with coccinelle using script below. For some reason, coccinelle doesn't patch header files. I've called spatch for them manually. The only adjustment after coccinelle is revert of changes to PAGE_CAHCE_ALIGN definition: we are going to drop it later. There are few places in the code where coccinelle didn't reach. I'll fix them manually in a separate patch. Comments and documentation also will be addressed with the separate patch. virtual patch @@ expression E; @@ - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ expression E; @@ - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ @@ - PAGE_CACHE_SHIFT + PAGE_SHIFT @@ @@ - PAGE_CACHE_SIZE + PAGE_SIZE @@ @@ - PAGE_CACHE_MASK + PAGE_MASK @@ expression E; @@ - PAGE_CACHE_ALIGN(E) + PAGE_ALIGN(E) @@ expression E; @@ - page_cache_get(E) + get_page(E) @@ expression E; @@ - page_cache_release(E) + put_page(E) Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-03-21Merge branch 'for-linus-4.6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs updates from Chris Mason: "We have a good sized cleanup of our internal read ahead code, and the first series of commits from Chandan to enable PAGE_SIZE > sectorsize Otherwise, it's a normal series of cleanups and fixes, with many thanks to Dave Sterba for doing most of the patch wrangling this time" * 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (82 commits) btrfs: make sure we stay inside the bvec during __btrfs_lookup_bio_sums btrfs: Fix misspellings in comments. btrfs: Print Warning only if ENOSPC_DEBUG is enabled btrfs: scrub: silence an uninitialized variable warning btrfs: move btrfs_compression_type to compression.h btrfs: rename btrfs_print_info to btrfs_print_mod_info Btrfs: Show a warning message if one of objectid reaches its highest value Documentation: btrfs: remove usage specific information btrfs: use kbasename in btrfsic_mount Btrfs: do not collect ordered extents when logging that inode exists Btrfs: fix race when checking if we can skip fsync'ing an inode Btrfs: fix listxattrs not listing all xattrs packed in the same item Btrfs: fix deadlock between direct IO reads and buffered writes Btrfs: fix extent_same allowing destination offset beyond i_size Btrfs: fix file loss on log replay after renaming a file and fsync Btrfs: fix unreplayable log after snapshot delete + parent dir fsync Btrfs: fix lockdep deadlock warning due to dev_replace btrfs: drop unused argument in btrfs_ioctl_get_supported_features btrfs: add GET_SUPPORTED_FEATURES to the control device ioctls btrfs: change max_inline default to 2048 ...
2016-03-17btrfs: use radix_tree_iter_retry()Matthew Wilcox
Even though this is a 'can't happen' situation, use the new radix_tree_iter_retry() pattern to eliminate a goto. [akpm@linux-foundation.org: fix btrfs build] Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Chris Mason <clm@fb.com> Cc: Josef Bacik <jbacik@fb.com> Cc: David Sterba <dsterba@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-03-11btrfs: move btrfs_compression_type to compression.hAnand Jain
So that its better organized. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2016-02-18btrfs: fix memory leak of fs_info in block group cacheKinglong Mee
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>
2016-01-22btrfs: tests: switch to GFP_KERNELDavid Sterba
There's no reason to do GFP_NOFS in tests, it's not data-heavy and memory allocation failures would affect only developers or testers. Signed-off-by: David Sterba <dsterba@suse.com>
2016-01-11Merge branch 'misc-cleanups-4.5' of ↵Chris Mason
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5 Signed-off-by: Chris Mason <clm@fb.com>
2016-01-11Merge branch 'misc-for-4.5' of ↵Chris Mason
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-07btrfs: constify remaining structs with function pointersDavid Sterba
* struct extent_io_ops * struct btrfs_free_space_op Signed-off-by: David Sterba <dsterba@suse.com>
2016-01-07btrfs tests: replace whole ops structure for free space testsDavid Sterba
Preparatory work for making btrfs_free_space_op constant. In test_steal_space_from_bitmap_to_extent, we substitute use_bitmap with own version thus preventing constification. We can rework it so we replace the whole structure with the correct function pointers. Signed-off-by: David Sterba <dsterba@suse.com>
2016-01-07Btrfs: use linux/sizes.h to represent constantsByongho Lee
We use many constants to represent size and offset value. And to make code readable we use '256 * 1024 * 1024' instead of '268435456' to represent '256MB'. However we can make far more readable with 'SZ_256MB' which is defined in the 'linux/sizes.h'. So this patch replaces 'xxx * 1024 * 1024' kind of expression with single 'SZ_xxxMB' if 'xxx' is a power of 2 then 'xxx * SZ_1M' if 'xxx' is not a power of 2. And I haven't touched to '4096' & '8192' because it's more intuitive than 'SZ_4KB' & 'SZ_8KB'. Signed-off-by: Byongho Lee <bhlee.kernel@gmail.com> Signed-off-by: David Sterba <dsterba@suse.com>
2015-12-18Merge branch 'freespace-tree' into for-linus-4.5Chris Mason
Signed-off-by: Chris Mason <clm@fb.com>
2015-12-17Btrfs: add free space tree sanity testsOmar Sandoval
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>
2015-12-17Btrfs: add extent buffer bitmap sanity testsOmar Sandoval
Sanity test the extent buffer bitmap operations (test, set, and clear) against the equivalent standard kernel operations. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
2015-11-25Btrfs: tests: checking for NULL instead of IS_ERR()Dan Carpenter
btrfs_alloc_dummy_root() return an error pointer on failure, it never returns NULL. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: Chris Mason <clm@fb.com>
2015-10-21Btrfs: add fragment=* debug mount optionJosef Bacik
In tracking down these weird bitmap problems it was helpful to artificially create an extremely fragmented file system. These mount options let us either fragment data or metadata or both. With these options I could reproduce all sorts of weird latencies and hangs that occur under extreme fragmentation and get them fixed. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
2015-06-10btrfs: qgroup: Switch self test to extent-oriented qgroup mechanism.Qu Wenruo
Since the self test transaction don't have delayed_ref_roots, so use find_all_roots() and export btrfs_qgroup_account_extent() to simulate it Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>
2015-04-13Btrfs: qgroup: cleanup, remove an unsued parameter in btrfs_create_qgroup().Dongsheng Yang
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>
2015-03-17Btrfs: add sanity test for outstanding_extents accountingJosef Bacik
I introduced a regression wrt outstanding_extents accounting. These are tricky areas that aren't easily covered by xfstests as we could change MAX_EXTENT_SIZE at any time. So add sanity tests to cover the various conditions that are tricky in order to make sure we don't introduce regressions in the future. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com>
2015-01-21btrfs: switch extent_state state to unsignedDavid Sterba
Currently there's a 4B hole in the structure between refs and state and there are only 16 bits used so we can make it unsigned. This will get a better packing and may save some stack space for local variables. The size of extent_state gets reduced by 8B and there are usually a lot of slab objects. struct extent_state { u64 start; /* 0 8 */ u64 end; /* 8 8 */ struct rb_node rb_node; /* 16 24 */ wait_queue_head_t wq; /* 40 24 */ /* --- cacheline 1 boundary (64 bytes) --- */ atomic_t refs; /* 64 4 */ /* XXX 4 bytes hole, try to pack */ long unsigned int state; /* 72 8 */ u64 private; /* 80 8 */ /* size: 88, cachelines: 2, members: 7 */ /* sum members: 84, holes: 1, sum holes: 4 */ /* last cacheline: 24 bytes */ }; Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
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