- Jul 11, 2023
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Filipe Manana authored
If a task creates a new block group and that block group becomes unused before we finish its creation, at btrfs_create_pending_block_groups(), then when btrfs_mark_bg_unused() is called against the block group, we assume that the block group is currently in the list of block groups to reclaim, and we move it out of the list of new block groups and into the list of unused block groups. This has two consequences: 1) We move it out of the list of new block groups associated to the current transaction. So the block group creation is not finished and if we attempt to delete the bg because it's unused, we will not find the block group item in the extent tree (or the new block group tree), its device extent items in the device tree etc, resulting in the deletion to fail due to the missing items; 2) We don't increment the reference count on the block group when we move it to the list of unused block groups, because we assumed the block group was on the list of block groups to reclaim, and in that case it already has the correct reference count. However the block group was on the list of new block groups, in which case no extra reference was taken because it's local to the current task. This later results in doing an extra reference count decrement when removing the block group from the unused list, eventually leading the reference count to 0. This second case was caught when running generic/297 from fstests, which produced the following assertion failure and stack trace: [589.559] assertion failed: refcount_read(&block_group->refs) == 1, in fs/btrfs/block-group.c:4299 [589.559] ------------[ cut here ]------------ [589.559] kernel BUG at fs/btrfs/block-group.c:4299! [589.560] invalid opcode: 0000 [#1] PREEMPT SMP PTI [589.560] CPU: 8 PID: 2819134 Comm: umount Tainted: G W 6.4.0-rc6-btrfs-next-134+ #1 [589.560] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014 [589.560] RIP: 0010:btrfs_free_block_groups+0x449/0x4a0 [btrfs] [589.561] Code: 68 62 da c0 (...) [589.561] RSP: 0018:ffffa55a8c3b3d98 EFLAGS: 00010246 [589.561] RAX: 0000000000000058 RBX: ffff8f030d7f2000 RCX: 0000000000000000 [589.562] RDX: 0000000000000000 RSI: ffffffff953f0878 RDI: 00000000ffffffff [589.562] RBP: ffff8f030d7f2088 R08: 0000000000000000 R09: ffffa55a8c3b3c50 [589.562] R10: 0000000000000001 R11: 0000000000000001 R12: ffff8f05850b4c00 [589.562] R13: ffff8f030d7f2090 R14: ffff8f05850b4cd8 R15: dead000000000100 [589.563] FS: 00007f497fd2e840(0000) GS:ffff8f09dfc00000(0000) knlGS:0000000000000000 [589.563] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [589.563] CR2: 00007f497ff8ec10 CR3: 0000000271472006 CR4: 0000000000370ee0 [589.563] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [589.564] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [589.564] Call Trace: [589.564] <TASK> [589.565] ? __die_body+0x1b/0x60 [589.565] ? die+0x39/0x60 [589.565] ? do_trap+0xeb/0x110 [589.565] ? btrfs_free_block_groups+0x449/0x4a0 [btrfs] [589.566] ? do_error_trap+0x6a/0x90 [589.566] ? btrfs_free_block_groups+0x449/0x4a0 [btrfs] [589.566] ? exc_invalid_op+0x4e/0x70 [589.566] ? btrfs_free_block_groups+0x449/0x4a0 [btrfs] [589.567] ? asm_exc_invalid_op+0x16/0x20 [589.567] ? btrfs_free_block_groups+0x449/0x4a0 [btrfs] [589.567] ? btrfs_free_block_groups+0x449/0x4a0 [btrfs] [589.567] close_ctree+0x35d/0x560 [btrfs] [589.568] ? fsnotify_sb_delete+0x13e/0x1d0 [589.568] ? dispose_list+0x3a/0x50 [589.568] ? evict_inodes+0x151/0x1a0 [589.568] generic_shutdown_super+0x73/0x1a0 [589.569] kill_anon_super+0x14/0x30 [589.569] btrfs_kill_super+0x12/0x20 [btrfs] [589.569] deactivate_locked_super+0x2e/0x70 [589.569] cleanup_mnt+0x104/0x160 [589.570] task_work_run+0x56/0x90 [589.570] exit_to_user_mode_prepare+0x160/0x170 [589.570] syscall_exit_to_user_mode+0x22/0x50 [589.570] ? __x64_sys_umount+0x12/0x20 [589.571] do_syscall_64+0x48/0x90 [589.571] entry_SYSCALL_64_after_hwframe+0x72/0xdc [589.571] RIP: 0033:0x7f497ff0a567 [589.571] Code: af 98 0e (...) [589.572] RSP: 002b:00007ffc98347358 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [589.572] RAX: 0000000000000000 RBX: 00007f49800b8264 RCX: 00007f497ff0a567 [589.572] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000557f558abfa0 [589.573] RBP: 0000557f558a6ba0 R08: 0000000000000000 R09: 00007ffc98346100 [589.573] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [589.573] R13: 0000557f558abfa0 R14: 0000557f558a6cb0 R15: 0000557f558a6dd0 [589.573] </TASK> [589.574] Modules linked in: dm_snapshot dm_thin_pool (...) [589.576] ---[ end trace 0000000000000000 ]--- Fix this by adding a runtime flag to the block group to tell that the block group is still in the list of new block groups, and therefore it should not be moved to the list of unused block groups, at btrfs_mark_bg_unused(), until the flag is cleared, when we finish the creation of the block group at btrfs_create_pending_block_groups(). Fixes: a9f18971 ("btrfs: move out now unused BG from the reclaim list") CC: stable@vger.kernel.org # 5.15+ Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Christoph Hellwig authored
The mirror_num_ret is allowed to be NULL, although it has to be set when smap is set. Unfortunately that is not a well enough specifiable invariant for static type checkers, so add a NULL check to make sure they are fine. Fixes: 03793cbb ("btrfs: add fast path for single device io in __btrfs_map_block") Reported-by:
Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by:
Qu Wenruo <wqu@suse.com> Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Josef Bacik authored
Syzbot reported a panic that looks like this: assertion failed: fs_info->exclusive_operation == BTRFS_EXCLOP_BALANCE_PAUSED, in fs/btrfs/ioctl.c:465 ------------[ cut here ]------------ kernel BUG at fs/btrfs/messages.c:259! RIP: 0010:btrfs_assertfail+0x2c/0x30 fs/btrfs/messages.c:259 Call Trace: <TASK> btrfs_exclop_balance fs/btrfs/ioctl.c:465 [inline] btrfs_ioctl_balance fs/btrfs/ioctl.c:3564 [inline] btrfs_ioctl+0x531e/0x5b30 fs/btrfs/ioctl.c:4632 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The reproducer is running a balance and a cancel or pause in parallel. The way balance finishes is a bit wonky, if we were paused we need to save the balance_ctl in the fs_info, but clear it otherwise and cleanup. However we rely on the return values being specific errors, or having a cancel request or no pause request. If balance completes and returns 0, but we have a pause or cancel request we won't do the appropriate cleanup, and then the next time we try to start a balance we'll trip this ASSERT. The error handling is just wrong here, we always want to clean up, unless we got -ECANCELLED and we set the appropriate pause flag in the exclusive op. With this patch the reproducer ran for an hour without tripping, previously it would trip in less than a few minutes. Reported-by:
<syzbot+c0f3acf145cb465426d5@syzkaller.appspotmail.com> CC: stable@vger.kernel.org # 6.1+ Signed-off-by:
Josef Bacik <josef@toxicpanda.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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- Jun 20, 2023
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Filipe Manana authored
If we disable quotas while we have a relocation of a metadata block group that has extents belonging to the quota root, we can cause the relocation to fail with -ENOENT. This is because relocation builds backref nodes for extents of the quota root and later needs to walk the backrefs and access the quota root - however if in between a task disables quotas, it results in deleting the quota root from the root tree (with btrfs_del_root(), called from btrfs_quota_disable(). This can be sporadically triggered by test case btrfs/255 from fstests: $ ./check btrfs/255 FSTYP -- btrfs PLATFORM -- Linux/x86_64 debian0 6.4.0-rc6-btrfs-next-134+ #1 SMP PREEMPT_DYNAMIC Thu Jun 15 11:59:28 WEST 2023 MKFS_OPTIONS -- /dev/sdc MOUNT_OPTIONS -- /dev/sdc /home/fdmanana/btrfs-tests/scratch_1 btrfs/255 6s ... _check_dmesg: something found in dmesg (see /home/fdmanana/git/hub/xfstests/results//btrfs/255.dmesg) - output mismatch (see /home/fdmanana/git/hub/xfstests/results//btrfs/255.out.bad) --- tests/btrfs/255.out 2023-03-02 21:47:53.876609426 +0000 +++ /home/fdmanana/git/hub/xfstests/results//btrfs/255.out.bad 2023-06-16 10:20:39.267563212 +0100 @@ -1,2 +1,4 @@ QA output created by 255 +ERROR: error during balancing '/home/fdmanana/btrfs-tests/scratch_1': No such file or directory +There may be more info in syslog - try dmesg | tail Silence is golden ... (Run 'diff -u /home/fdmanana/git/hub/xfstests/tests/btrfs/255.out /home/fdmanana/git/hub/xfstests/results//btrfs/255.out.bad' to see the entire diff) Ran: btrfs/255 Failures: btrfs/255 Failed 1 of 1 tests To fix this make the quota disable operation take the cleaner mutex, as relocation of a block group also takes this mutex. This is also what we do when deleting a subvolume/snapshot, we take the cleaner mutex in the cleaner kthread (at cleaner_kthread()) and then we call btrfs_del_root() at btrfs_drop_snapshot() while under the protection of the cleaner mutex. Fixes: bed92eae ("Btrfs: qgroup implementation and prototypes") CC: stable@vger.kernel.org # 5.4+ Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
Add a comment to struct btrfs_fs_info::dirty_cowonly_roots to mention that struct btrfs_fs_info::trans_lock is the lock that protects that list. Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
When deleting the free space tree we are deleting the free space root from the list fs_info->dirty_cowonly_roots without taking the lock that protects it, which is struct btrfs_fs_info::trans_lock. This unsynchronized list manipulation may cause chaos if there's another concurrent manipulation of this list, such as when adding a root to it with ctree.c:add_root_to_dirty_list(). This can result in all sorts of weird failures caused by a race, such as the following crash: [337571.278245] general protection fault, probably for non-canonical address 0xdead000000000108: 0000 [#1] PREEMPT SMP PTI [337571.278933] CPU: 1 PID: 115447 Comm: btrfs Tainted: G W 6.4.0-rc6-btrfs-next-134+ #1 [337571.279153] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [337571.279572] RIP: 0010:commit_cowonly_roots+0x11f/0x250 [btrfs] [337571.279928] Code: 85 38 06 00 (...) [337571.280363] RSP: 0018:ffff9f63446efba0 EFLAGS: 00010206 [337571.280582] RAX: ffff942d98ec2638 RBX: ffff9430b82b4c30 RCX: 0000000449e1c000 [337571.280798] RDX: dead000000000100 RSI: ffff9430021e4900 RDI: 0000000000036070 [337571.281015] RBP: ffff942d98ec2000 R08: ffff942d98ec2000 R09: 000000000000015b [337571.281254] R10: 0000000000000009 R11: 0000000000000001 R12: ffff942fe8fbf600 [337571.281476] R13: ffff942dabe23040 R14: ffff942dabe20800 R15: ffff942d92cf3b48 [337571.281723] FS: 00007f478adb7340(0000) GS:ffff94349fa40000(0000) knlGS:0000000000000000 [337571.281950] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [337571.282184] CR2: 00007f478ab9a3d5 CR3: 000000001e02c001 CR4: 0000000000370ee0 [337571.282416] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [337571.282647] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [337571.282874] Call Trace: [337571.283101] <TASK> [337571.283327] ? __die_body+0x1b/0x60 [337571.283570] ? die_addr+0x39/0x60 [337571.283796] ? exc_general_protection+0x22e/0x430 [337571.284022] ? asm_exc_general_protection+0x22/0x30 [337571.284251] ? commit_cowonly_roots+0x11f/0x250 [btrfs] [337571.284531] btrfs_commit_transaction+0x42e/0xf90 [btrfs] [337571.284803] ? _raw_spin_unlock+0x15/0x30 [337571.285031] ? release_extent_buffer+0x103/0x130 [btrfs] [337571.285305] reset_balance_state+0x152/0x1b0 [btrfs] [337571.285578] btrfs_balance+0xa50/0x11e0 [btrfs] [337571.285864] ? __kmem_cache_alloc_node+0x14a/0x410 [337571.286086] btrfs_ioctl+0x249a/0x3320 [btrfs] [337571.286358] ? mod_objcg_state+0xd2/0x360 [337571.286577] ? refill_obj_stock+0xb0/0x160 [337571.286798] ? seq_release+0x25/0x30 [337571.287016] ? __rseq_handle_notify_resume+0x3ba/0x4b0 [337571.287235] ? percpu_counter_add_batch+0x2e/0xa0 [337571.287455] ? __x64_sys_ioctl+0x88/0xc0 [337571.287675] __x64_sys_ioctl+0x88/0xc0 [337571.287901] do_syscall_64+0x38/0x90 [337571.288126] entry_SYSCALL_64_after_hwframe+0x72/0xdc [337571.288352] RIP: 0033:0x7f478aaffe9b So fix this by locking struct btrfs_fs_info::trans_lock before deleting the free space root from that list. Fixes: a5ed9182 ("Btrfs: implement the free space B-tree") CC: stable@vger.kernel.org # 4.14+ Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
When disabling quotas we are deleting the quota root from the list fs_info->dirty_cowonly_roots without taking the lock that protects it, which is struct btrfs_fs_info::trans_lock. This unsynchronized list manipulation may cause chaos if there's another concurrent manipulation of this list, such as when adding a root to it with ctree.c:add_root_to_dirty_list(). This can result in all sorts of weird failures caused by a race, such as the following crash: [337571.278245] general protection fault, probably for non-canonical address 0xdead000000000108: 0000 [#1] PREEMPT SMP PTI [337571.278933] CPU: 1 PID: 115447 Comm: btrfs Tainted: G W 6.4.0-rc6-btrfs-next-134+ #1 [337571.279153] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [337571.279572] RIP: 0010:commit_cowonly_roots+0x11f/0x250 [btrfs] [337571.279928] Code: 85 38 06 00 (...) [337571.280363] RSP: 0018:ffff9f63446efba0 EFLAGS: 00010206 [337571.280582] RAX: ffff942d98ec2638 RBX: ffff9430b82b4c30 RCX: 0000000449e1c000 [337571.280798] RDX: dead000000000100 RSI: ffff9430021e4900 RDI: 0000000000036070 [337571.281015] RBP: ffff942d98ec2000 R08: ffff942d98ec2000 R09: 000000000000015b [337571.281254] R10: 0000000000000009 R11: 0000000000000001 R12: ffff942fe8fbf600 [337571.281476] R13: ffff942dabe23040 R14: ffff942dabe20800 R15: ffff942d92cf3b48 [337571.281723] FS: 00007f478adb7340(0000) GS:ffff94349fa40000(0000) knlGS:0000000000000000 [337571.281950] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [337571.282184] CR2: 00007f478ab9a3d5 CR3: 000000001e02c001 CR4: 0000000000370ee0 [337571.282416] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [337571.282647] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [337571.282874] Call Trace: [337571.283101] <TASK> [337571.283327] ? __die_body+0x1b/0x60 [337571.283570] ? die_addr+0x39/0x60 [337571.283796] ? exc_general_protection+0x22e/0x430 [337571.284022] ? asm_exc_general_protection+0x22/0x30 [337571.284251] ? commit_cowonly_roots+0x11f/0x250 [btrfs] [337571.284531] btrfs_commit_transaction+0x42e/0xf90 [btrfs] [337571.284803] ? _raw_spin_unlock+0x15/0x30 [337571.285031] ? release_extent_buffer+0x103/0x130 [btrfs] [337571.285305] reset_balance_state+0x152/0x1b0 [btrfs] [337571.285578] btrfs_balance+0xa50/0x11e0 [btrfs] [337571.285864] ? __kmem_cache_alloc_node+0x14a/0x410 [337571.286086] btrfs_ioctl+0x249a/0x3320 [btrfs] [337571.286358] ? mod_objcg_state+0xd2/0x360 [337571.286577] ? refill_obj_stock+0xb0/0x160 [337571.286798] ? seq_release+0x25/0x30 [337571.287016] ? __rseq_handle_notify_resume+0x3ba/0x4b0 [337571.287235] ? percpu_counter_add_batch+0x2e/0xa0 [337571.287455] ? __x64_sys_ioctl+0x88/0xc0 [337571.287675] __x64_sys_ioctl+0x88/0xc0 [337571.287901] do_syscall_64+0x38/0x90 [337571.288126] entry_SYSCALL_64_after_hwframe+0x72/0xdc [337571.288352] RIP: 0033:0x7f478aaffe9b So fix this by locking struct btrfs_fs_info::trans_lock before deleting the quota root from that list. Fixes: bed92eae ("Btrfs: qgroup implementation and prototypes") CC: stable@vger.kernel.org # 4.14+ Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Naohiro Aota authored
The btrfs_inode_mod_outstanding_extents trace event only shows the modified number to the number of outstanding extents. It would be helpful if we can see the resulting extent number as well. Signed-off-by:
Naohiro Aota <naohiro.aota@wdc.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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- Jun 19, 2023
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Jeff Layton authored
When updating the ctime, we also want to update i_version. This is just something I noticed by inspection. There is probably no way to test this today unless you can somehow get to this inode via nfsd. Still, I think it's the right thing to do for consistency's sake. David Sterba's comment: I don't see anything wrong with setting the iversion bit, however I also don't see where this would be useful. Agreed with the consistency, otherwise the time is updated when device super block is wiped or a device initialized, both are big events so missing that due to lack of iversion update seems unlikely. I'll add it to the queue, thanks. Signed-off-by:
Jeff Layton <jlayton@kernel.org> [ add comments ] Signed-off-by:
David Sterba <dsterba@suse.com>
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Ben Dooks authored
The 'btrfs_compressed_bioset' struct isn't exported outside of the fs/btrfs/compression.c file, so make it static to fix the following sparse warning: fs/btrfs/compression.c:40:16: warning: symbol 'btrfs_compressed_bioset' was not declared. Should it be static? Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Ben Dooks <ben.dooks@codethink.co.uk> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Matt Corallo authored
Callers of `btrfs_reduce_alloc_profile` expect it to return exactly one allocation profile flag, and failing to do so may ultimately result in a WARN_ON and remount-ro when allocating new blocks, like the below transaction abort on 6.1. `btrfs_reduce_alloc_profile` has two ways of determining the profile, first it checks if a conversion balance is currently running and uses the profile we're converting to. If no balance is currently running, it returns the max-redundancy profile which at least one block in the selected block group has. This works by simply checking each known allocation profile bit in redundancy order. However, `btrfs_reduce_alloc_profile` has not been updated as new flags have been added - first with the `DUP` profile and later with the RAID1C34 profiles. Because of the way it checks, if we have blocks with different profiles and at least one is known, that profile will be selected. However, if none are known we may return a flag set with multiple allocation profiles set. This is currently only possible when a balance from one of the three unhandled profiles to another of the unhandled profiles is canceled after allocating at least one block using the new profile. In that case, a transaction abort like the below will occur and the filesystem will need to be mounted with -o skip_balance to get it mounted rw again (but the balance cannot be resumed without a similar abort). [770.648] ------------[ cut here ]------------ [770.648] BTRFS: Transaction aborted (error -22) [770.648] WARNING: CPU: 43 PID: 1159593 at fs/btrfs/extent-tree.c:4122 find_free_extent+0x1d94/0x1e00 [btrfs] [770.648] CPU: 43 PID: 1159593 Comm: btrfs Tainted: G W 6.1.0-0.deb11.7-powerpc64le #1 Debian 6.1.20-2~bpo11+1a~test [770.648] Hardware name: T2P9D01 REV 1.00 POWER9 0x4e1202 opal:skiboot-bc106a0 PowerNV [770.648] NIP: c00800000f6784fc LR: c00800000f6784f8 CTR: c000000000d746c0 [770.648] REGS: c000200089afe9a0 TRAP: 0700 Tainted: G W (6.1.0-0.deb11.7-powerpc64le Debian 6.1.20-2~bpo11+1a~test) [770.648] MSR: 9000000002029033 <SF,HV,VEC,EE,ME,IR,DR,RI,LE> CR: 28848282 XER: 20040000 [770.648] CFAR: c000000000135110 IRQMASK: 0 GPR00: c00800000f6784f8 c000200089afec40 c00800000f7ea800 0000000000000026 GPR04: 00000001004820c2 c000200089afea00 c000200089afe9f8 0000000000000027 GPR08: c000200ffbfe7f98 c000000002127f90 ffffffffffffffd8 0000000026d6a6e8 GPR12: 0000000028848282 c000200fff7f3800 5deadbeef0000122 c00000002269d000 GPR16: c0002008c7797c40 c000200089afef17 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000001 c000200008bc5a98 0000000000000001 GPR24: 0000000000000000 c0000003c73088d0 c000200089afef17 c000000016d3a800 GPR28: c0000003c7308800 c00000002269d000 ffffffffffffffea 0000000000000001 [770.648] NIP [c00800000f6784fc] find_free_extent+0x1d94/0x1e00 [btrfs] [770.648] LR [c00800000f6784f8] find_free_extent+0x1d90/0x1e00 [btrfs] [770.648] Call Trace: [770.648] [c000200089afec40] [c00800000f6784f8] find_free_extent+0x1d90/0x1e00 [btrfs] (unreliable) [770.648] [c000200089afed30] [c00800000f681398] btrfs_reserve_extent+0x1a0/0x2f0 [btrfs] [770.648] [c000200089afeea0] [c00800000f681bf0] btrfs_alloc_tree_block+0x108/0x670 [btrfs] [770.648] [c000200089afeff0] [c00800000f66bd68] __btrfs_cow_block+0x170/0x850 [btrfs] [770.648] [c000200089aff100] [c00800000f66c58c] btrfs_cow_block+0x144/0x288 [btrfs] [770.648] [c000200089aff1b0] [c00800000f67113c] btrfs_search_slot+0x6b4/0xcb0 [btrfs] [770.648] [c000200089aff2a0] [c00800000f679f60] lookup_inline_extent_backref+0x128/0x7c0 [btrfs] [770.648] [c000200089aff3b0] [c00800000f67b338] lookup_extent_backref+0x70/0x190 [btrfs] [770.648] [c000200089aff470] [c00800000f67b54c] __btrfs_free_extent+0xf4/0x1490 [btrfs] [770.648] [c000200089aff5a0] [c00800000f67d770] __btrfs_run_delayed_refs+0x328/0x1530 [btrfs] [770.648] [c000200089aff740] [c00800000f67ea2c] btrfs_run_delayed_refs+0xb4/0x3e0 [btrfs] [770.648] [c000200089aff800] [c00800000f699aa4] btrfs_commit_transaction+0x8c/0x12b0 [btrfs] [770.648] [c000200089aff8f0] [c00800000f6dc628] reset_balance_state+0x1c0/0x290 [btrfs] [770.648] [c000200089aff9a0] [c00800000f6e2f7c] btrfs_balance+0x1164/0x1500 [btrfs] [770.648] [c000200089affb40] [c00800000f6f8e4c] btrfs_ioctl+0x2b54/0x3100 [btrfs] [770.648] [c000200089affc80] [c00000000053be14] sys_ioctl+0x794/0x1310 [770.648] [c000200089affd70] [c00000000002af98] system_call_exception+0x138/0x250 [770.648] [c000200089affe10] [c00000000000c654] system_call_common+0xf4/0x258 [770.648] --- interrupt: c00 at 0x7fff94126800 [770.648] NIP: 00007fff94126800 LR: 0000000107e0b594 CTR: 0000000000000000 [770.648] REGS: c000200089affe80 TRAP: 0c00 Tainted: G W (6.1.0-0.deb11.7-powerpc64le Debian 6.1.20-2~bpo11+1a~test) [770.648] MSR: 900000000000d033 <SF,HV,EE,PR,ME,IR,DR,RI,LE> CR: 24002848 XER: 00000000 [770.648] IRQMASK: 0 GPR00: 0000000000000036 00007fffc9439da0 00007fff94217100 0000000000000003 GPR04: 00000000c4009420 00007fffc9439ee8 0000000000000000 0000000000000000 GPR08: 00000000803c7416 0000000000000000 0000000000000000 0000000000000000 GPR12: 0000000000000000 00007fff9467d120 0000000107e64c9c 0000000107e64d0a GPR16: 0000000107e64d06 0000000107e64cf1 0000000107e64cc4 0000000107e64c73 GPR20: 0000000107e64c31 0000000107e64bf1 0000000107e64be7 0000000000000000 GPR24: 0000000000000000 00007fffc9439ee0 0000000000000003 0000000000000001 GPR28: 00007fffc943f713 0000000000000000 00007fffc9439ee8 0000000000000000 [770.648] NIP [00007fff94126800] 0x7fff94126800 [770.648] LR [0000000107e0b594] 0x107e0b594 [770.648] --- interrupt: c00 [770.648] Instruction dump: [770.648] 3b00ffe4 e8898828 481175f5 60000000 4bfff4fc 3be00000 4bfff570 3d220000 [770.648] 7fc4f378 e8698830 4811cd95 e8410018 <0fe00000> f9c10060 f9e10068 fa010070 [770.648] ---[ end trace 0000000000000000 ]--- [770.648] BTRFS: error (device dm-2: state A) in find_free_extent_update_loop:4122: errno=-22 unknown [770.648] BTRFS info (device dm-2: state EA): forced readonly [770.648] BTRFS: error (device dm-2: state EA) in __btrfs_free_extent:3070: errno=-22 unknown [770.648] BTRFS error (device dm-2: state EA): failed to run delayed ref for logical 17838685708288 num_bytes 24576 type 184 action 2 ref_mod 1: -22 [770.648] BTRFS: error (device dm-2: state EA) in btrfs_run_delayed_refs:2144: errno=-22 unknown [770.648] BTRFS: error (device dm-2: state EA) in reset_balance_state:3599: errno=-22 unknown Fixes: 47e6f742 ("btrfs: add support for 3-copy replication (raid1c3)") Fixes: 8d6fac00 ("btrfs: add support for 4-copy replication (raid1c4)") CC: stable@vger.kernel.org # 5.10+ Signed-off-by:
Matt Corallo <blnxfsl@bluematt.me> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Qu Wenruo authored
Since the scrub rework introduced by commit 2af2aaf9 ("btrfs: scrub: introduce structure for new BTRFS_STRIPE_LEN based interface") and later commits, scrub only needs one single workqueue, fs_info::scrub_worker. That scrub_wr_completion_workers is initially to handle the delay work after write bios finished. But the new scrub code goes submit-and-wait for write bios, thus all the work are done inside the scrub_worker. The last user of fs_info::scrub_wr_completion_workers is removed in commit 16f93993 ("btrfs: scrub: remove the old writeback infrastructure"), so we can safely remove the workqueue. Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Qu Wenruo <wqu@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Qu Wenruo authored
Since the rework of scrub introduced by commit 2af2aaf9 ("btrfs: scrub: introduce structure for new BTRFS_STRIPE_LEN based interface") and later commits, scrub no longer keeps its data checksum inside sctx. Instead we have scrub_stripe::csums for the checksum of the stripe. Thus we can remove the unused scrub_ctx::csum_list member. Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Qu Wenruo <wqu@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
During truncation we reserve 2 metadata units when starting a transaction (reserved space goes to fs_info->trans_block_rsv) and then attempt to migrate 1 unit (min_size bytes) from fs_info->trans_block_rsv into the local block reserve. If we ever fail we trigger a BUG_ON(), which should never happen, because we reserved 2 units. However if we happen to fail for some reason, we don't need to be so dire and hit a BUG_ON(), we can just error out the truncation and, since this is highly unexpected, surround the error check with WARN_ON(), to get an informative stack trace and tag the branh as 'unlikely'. Also make the 'min_size' variable const, since it's not supposed to ever change and any accidental change could possibly make the space migration not so unlikely to fail. Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
During the transaction commit path, at create_pending_snapshot(), there is no need to BUG_ON() in case we fail to get a dir index for the snapshot in the parent directory. This should fail very rarely because the parent inode should be loaded in memory already, with the respective delayed inode created and the parent inode's index_cnt field already initialized. However if it fails, it may be -ENOMEM like the comment at create_pending_snapshot() says or any error returned by btrfs_search_slot() through btrfs_set_inode_index_count(), which can be pretty much anything such as -EIO or -EUCLEAN for example. So the comment is not correct when it says it can only be -ENOMEM. However doing a BUG_ON() here is overkill, since we can instead abort the transaction and return the error. Note that any error returned by create_pending_snapshot() will eventually result in a transaction abort at cleanup_transaction(), called from btrfs_commit_transaction(), but we can explicitly abort the transaction at this point instead so that we get a stack trace to tell us that the call to btrfs_set_inode_index() failed. So just abort the transaction and return in case btrfs_set_inode_index() returned an error at create_pending_snapshot(). Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
There's really no need to BUG_ON() if we find a symlink with an extent that is not inline or is compressed. We can just make send fail with an error (-EUCLEAN) and log an informative error message, so just do that instead of BUG_ON(). Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
When dropping inode items from a log tree at drop_inode_items(), we this BUG_ON() on the result of btrfs_search_slot() because we don't expect an exact match since having a key with an offset of (u64)-1 is unexpected. That is generally true, but for dir index keys for example, we can get a key with such an offset value, even though it's very unlikely and it would take ages to increase the sequence counter for a dir index up to (u64)-1. We can deal with an exact match, we just have to delete the key at that slot, so there is really no need to BUG_ON(), error out or trigger any warning. So remove the BUG_ON(). Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
There's no need to BUG_ON() at split_item() if the leaf does not have enough free space for the new item, we can just return -ENOSPC since the caller can deal with errors from split_item(). Also, as this is a very unlikely condition to happen, because the caller has invoked setup_leaf_for_split() before calling split_item(), surround the condition with a WARN_ON() which makes it easier to notice this unexpected condition and tags the if branch with 'unlikely' as well. I've actually once hit this BUG_ON() with some incorrect code changes I had, which was very inconvenient as it required rebooting the VM. Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At btrfs_del_ptr(), instead of doing a BUG_ON() in case we fail to record tree mod log operations, do a transaction abort and return the error to the callers. There's really no need for the BUG_ON() as we can release all resources in the context of all callers, and we have to abort because other future tree searches that use the tree mod log (btrfs_search_old_slot()) may get inconsistent results if other operations modify the tree after that failure and before the tree mod log based search. This implies btrfs_del_ptr() return an int instead of void, and making all callers check for returned errors. Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At insert_ptr(), instead of doing a BUG_ON() in case we fail to record tree mod log operations, do a transaction abort and return the error to the callers. There's really no need for the BUG_ON() as we can release all resources in the context of all callers, and we have to abort because other future tree searches that use the tree mod log (btrfs_search_old_slot()) may get inconsistent results if other operations modify the tree after that failure and before the tree mod log based search. This implies making insert_ptr() return an int instead of void, and making all callers check for returned errors. Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At insert_new_root(), instead of doing a BUG_ON() in case we fail to record the tree mod log operation, just return the error to the callers after releasing the allocated tree block. At this point we haven't made any changes to the b+tree, so we haven't left it in an inconsistent state and therefore have no need to abort the transaction. All we need to do is to unlock and free the extent buffer we just allocated with the purpose of making it the new root. Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At push_nodes_for_insert(), instead of doing a BUG_ON() in case we fail to record tree mod log operations, do a transaction abort and return the error to the caller. There's really no need for the BUG_ON() as we can release all resources in this context, and we have to abort because other future tree searches that use the tree mod log (btrfs_search_old_slot()) may get inconsistent results if other operations modify the tree after that failure and before the tree mod log based search. Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At update_ref_for_cow() we are calling btrfs_handle_fs_error() if we find that the extent buffer has an unexpected ref count of zero, however we can simply use btrfs_abort_transaction(), which achieves the same purposes: to turn the fs to error state, abort the current transaction and turn the fs to RO mode as well. Besides that, btrfs_abort_transaction() also prints a stack trace which makes it more useful. Also, as this is a very unexpected situation, indicating a serious corruption/inconsistency, tag the if branch as 'unlikely', set the error code to -EUCLEAN instead of -EROFS, and log an explicit message. Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At balance_level() we are calling btrfs_handle_fs_error() when the middle child only has 1 item and the left child is missing, however we can simply use btrfs_abort_transaction(), which achieves the same purposes: to turn the fs to error state, abort the current transaction and turn the fs to RO mode. Besides that, btrfs_abort_transaction() also prints a stack trace which makes it more useful. Also, as this is a highly unexpected case and it's about a b+tree inconsistency, change the error code from -EROFS to -EUCLEAN, tag the if branch as 'unlikely' and log an explicit error message. Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At balance_level(), when trying to promote a child node to a root node, if we fail to read the child we call btrfs_handle_fs_error(), which turns the fs to RO mode and sets it to error state as well, causing any ongoing transaction to abort. This however is not necessary because at that point we have not made any change yet at balance_level(), so any error reading the child node does not leaves us in any inconsistent state. Therefore we can just return the error to the caller. Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At balance_level() we have this 'enospc' label where we jump to in case we get an error at several places. However that error is certainly not -ENOSPC in call cases, it can be -EIO or -ENOMEM when reading a child extent buffer for example, or -ENOMEM when trying to record tree mod log operations. So to make this less confusing, rename the label to 'out'. Reviewed-by:
Qu Wenruo <wqu@suse.com> Reviewed-by:
Anand Jain <anand.jain@oracle.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At balance_level(), instead of doing a BUG_ON() in case we fail to record tree mod log operations, do a transaction abort and return the error to the callers. There's really no need for the BUG_ON() as we can release all resources in this context, and we have to abort because other future tree searches that use the tree mod log (btrfs_search_old_slot()) may get inconsistent results if other operations modify the tree after that failure and before the tree mod log based search. CC: stable@vger.kernel.org # 5.4+ Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At __btrfs_cow_block(), instead of doing a BUG_ON() in case we fail to record a tree mod log root insertion operation, do a transaction abort instead. There's really no need for the BUG_ON(), we can properly release all resources in this context and turn the filesystem to RO mode and in an error state instead. CC: stable@vger.kernel.org # 5.4+ Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
When logging tree mod log operations we start by checking, in a lockless manner, if we need to log - if we don't, we just return and do nothing, otherwise we will allocate one or more tree mod log operations and then check again if we need to log. This second check will take the tree mod log lock in write mode if we need to log, otherwise it will do nothing and we just free the allocated memory and return success. We can improve on this by not returning an error in case the memory allocations fail, unless the second check tells us that we actually need to log. That is, if we fail to allocate memory and the second check tells use that we don't need to log, we can just return success and avoid returning -ENOMEM to the caller. Currently tree mod log failures are dealt with either a BUG_ON() or a transaction abort, as tree mod log operations are logged in code paths that modify a b+tree. So just avoid failing with -ENOMEM if we fail to allocate a tree mod log operation unless we actually need to log the operations, that is, if tree_mod_dont_log() returns true. Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
At split_node(), if we fail to log the tree mod log copy operation, we return without unlocking the split extent buffer we just allocated and without decrementing the reference we own on it. Fix this by unlocking it and decrementing the ref count before returning. Fixes: 5de865ee ("Btrfs: fix tree mod logging") CC: stable@vger.kernel.org # 5.4+ Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
When COWing an extent buffer that is not the root node, we need to log in the tree mod log that we replaced a pointer in the parent node, otherwise a tree mod log user doing a search on the b+tree can return incorrect results (that miss something). We are doing the call to btrfs_tree_mod_log_insert_key() but we totally ignore its return value. So fix this by adding the missing error handling, resulting in a transaction abort and freeing the COWed extent buffer. Fixes: f230475e ("Btrfs: put all block modifications into the tree mod log") CC: stable@vger.kernel.org # 5.4+ Reviewed-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Christoph Hellwig authored
Since commit a2ad63da ("VFS: add FMODE_CAN_ODIRECT file flag") file systems can just set the FMODE_CAN_ODIRECT flag at open time instead of wiring up a dummy direct_IO method to indicate support for direct I/O. Do that for btrfs so that noop_direct_IO can eventually be removed. Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Filipe Manana authored
Currently we are only documenting two uses of the bg_list member of a block group, but there two more: 1) To track deleted block groups for discard purposes, introduced in commit e33e17ee ("btrfs: add missing discards when unpinning extents with -o discard"); 2) To track block groups for automatic reclaim, introduced more recently by commit 18bb8bbf ("btrfs: zoned: automatically reclaim zones") So document those two other use cases. Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Naohiro Aota authored
The reclaim process can temporarily fail. For example, if the space is getting tight, it fails to make the block group read-only. If there are no further writes on that block group, the block group will never get back to the reclaim list, and the BG never gets reclaimed. In a certain workload, we can leave many such block groups never reclaimed. So, let's get it back to the list and give it a chance to be reclaimed. Fixes: 18bb8bbf ("btrfs: zoned: automatically reclaim zones") CC: stable@vger.kernel.org # 5.15+ Signed-off-by:
Naohiro Aota <naohiro.aota@wdc.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Naohiro Aota authored
When a filesystem is read-only, we cannot reclaim a block group as it cannot rewrite the data. Just bail out in that case. Note that it can drop block groups in this case. As we did sb_start_write(), read-only filesystem means we got a fatal error and forced read-only. There is no chance to reclaim them again. Fixes: 18bb8bbf ("btrfs: zoned: automatically reclaim zones") CC: stable@vger.kernel.org # 5.15+ Reviewed-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by:
Naohiro Aota <naohiro.aota@wdc.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Naohiro Aota authored
An unused block group is easy to remove to free up space and should be reclaimed fast. Such block group can often already be a target of the reclaim process. As we check list_empty(&bg->bg_list), we keep it in the reclaim list. That block group is never reclaimed until the file system is filled e.g. up to 75%. Instead, we can move unused block group to the unused list and delete it fast. Fixes: 18bb8bbf ("btrfs: zoned: automatically reclaim zones") CC: stable@vger.kernel.org # 5.15+ Reviewed-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by:
Naohiro Aota <naohiro.aota@wdc.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Naohiro Aota authored
The reclaiming process only starts after the filesystem volumes are allocated to a certain level (75% by default). Thus, the list of reclaiming target block groups can build up so huge at the time the reclaim process kicks in. On a test run, there were over 1000 BGs in the reclaim list. As the reclaim involves rewriting the data, it takes really long time to reclaim the BGs. While the reclaim is running, btrfs_delete_unused_bgs() won't proceed because the reclaim side is holding fs_info->reclaim_bgs_lock. As a result, we will have a large number of unused BGs kept in the unused list. On my test run, I got 1057 unused BGs. Since deleting a block group is relatively easy and fast work, we can call btrfs_delete_unused_bgs() while it reclaims BGs, to avoid building up unused BGs. Fixes: 18bb8bbf ("btrfs: zoned: automatically reclaim zones") CC: stable@vger.kernel.org # 5.15+ Reviewed-by:
Filipe Manana <fdmanana@suse.com> Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by:
Naohiro Aota <naohiro.aota@wdc.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Christoph Hellwig authored
Use the btrfs_finish_ordered_extent helper to complete compressed writes using the bbio->ordered pointer instead of requiring an rbtree lookup in the otherwise equivalent btrfs_mark_ordered_io_finished called from btrfs_writepage_endio_finish_ordered. Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by:
Josef Bacik <josef@toxicpanda.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Christoph Hellwig authored
Use the btrfs_finish_ordered_extent helper to complete compressed writes using the bbio->ordered pointer instead of requiring an rbtree lookup in the otherwise equivalent btrfs_mark_ordered_io_finished called from btrfs_writepage_endio_finish_ordered. Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by:
Josef Bacik <josef@toxicpanda.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Christoph Hellwig authored
Use the btrfs_finish_ordered_extent helper to complete compressed writes using the bbio->ordered pointer instead of requiring an rbtree lookup in the otherwise equivalent btrfs_mark_ordered_io_finished called from btrfs_writepage_endio_finish_ordered. Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by:
Josef Bacik <josef@toxicpanda.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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