- 20 6月, 2017 4 次提交
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由 David Sterba 提交于
The list used to track checksums in the early version (2.6.29), but I was able not pinpoint the commit that stopped using it. Everything apparently works without it for a long time. Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Josef Bacik 提交于
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: NJosef Bacik <jbacik@fb.com> Reviewed-by: NChandan Rajendra <chandan@linux.vnet.ibm.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> [ minor reordering of the callback prototypes ] Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Nikolay Borisov 提交于
The ->free_chunk_space variable is used to track the unallocated space and access to it is protected by a spinlock, which is not used for anything else. Make the code a bit self-explanatory by switching the variable to an atomic64_t type and kill the spinlock. Signed-off-by: NNikolay Borisov <nborisov@suse.com> [ not a performance critical code, use of atomic type is ok ] Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Anand Jain 提交于
This adds comments to the flush error handling part of the code, and hopes to maintain the same logic with a framework which can be used to handle the errors at the volume level. Signed-off-by: NAnand Jain <anand.jain@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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- 16 5月, 2017 1 次提交
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由 Jan Kara 提交于
Commit b685d3d6 "block: treat REQ_FUA and REQ_PREFLUSH as synchronous" removed REQ_SYNC flag from WRITE_{FUA|PREFLUSH|...} definitions. generic_make_request_checks() however strips REQ_FUA and REQ_PREFLUSH flags from a bio when the storage doesn't report volatile write cache and thus write effectively becomes asynchronous which can lead to performance regressions Fix the problem by making sure all bios which are synchronous are properly marked with REQ_SYNC. CC: David Sterba <dsterba@suse.com> CC: linux-btrfs@vger.kernel.org Fixes: b685d3d6Signed-off-by: NJan Kara <jack@suse.cz> Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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- 05 5月, 2017 1 次提交
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由 Chris Mason 提交于
Commits cc8385b5 and 7ef70b4d added preallocation for the reada radix trees and also switched them over to GFP_KERNEL for the default gfp mask. Since we're doing radix tree insertions under spinlocks, we need to make sure the mask doesn't allow sleeping. This fix keeps the radix preallocation but switches back to the original gfp_mask. Reported-by: NFilipe Manana <fdmanana@suse.com> Signed-off-by: NChris Mason <clm@fb.com>
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- 21 4月, 2017 1 次提交
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由 Jan Kara 提交于
Allocate struct backing_dev_info separately instead of embedding it inside superblock. This unifies handling of bdi among users. CC: Chris Mason <clm@fb.com> CC: Josef Bacik <jbacik@fb.com> CC: David Sterba <dsterba@suse.com> CC: linux-btrfs@vger.kernel.org Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJan Kara <jack@suse.cz> Signed-off-by: NJens Axboe <axboe@fb.com>
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- 18 4月, 2017 7 次提交
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由 Anand Jain 提交于
The block layer call chain from submit_bio will check if the write cache is enabled for the given queue before submitting the flush. This will add a code to fail fast if its not. Signed-off-by: NAnand Jain <anand.jain@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> [ updated changelog to reflect current code stat, blkdev_issue_flush is not used yet ] Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Anand Jain 提交于
The last consumer of nobarriers is removed by the commit [1] and sync won't fail with EOPNOTSUPP anymore. Thus, now when write cache is write through it just return success without actually transpiring such a request to the block device/lun. [1] commit b25de9d6 block: remove BIO_EOPNOTSUPP And, as the device/lun write cache state may change dynamically saving such as state won't help either. So deleting the member nobarriers. Signed-off-by: NAnand Jain <anand.jain@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
We can read fs_info from eb. Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
We can preallocate the node so insertion does not have to do that under the lock. The GFP flags for the global radix tree are initialized to GFP_NOFS & ~__GFP_DIRECT_RECLAIM but we can use GFP_KERNEL, because readahead is optional and not on any critical writeout path. Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Elena Reshetova 提交于
refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: NElena Reshetova <elena.reshetova@intel.com> Signed-off-by: NHans Liljestrand <ishkamiel@gmail.com> Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid Windsor <dwindsor@gmail.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Elena Reshetova 提交于
refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: NElena Reshetova <elena.reshetova@intel.com> Signed-off-by: NHans Liljestrand <ishkamiel@gmail.com> Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid Windsor <dwindsor@gmail.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Elena Reshetova 提交于
refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: NElena Reshetova <elena.reshetova@intel.com> Signed-off-by: NHans Liljestrand <ishkamiel@gmail.com> Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid Windsor <dwindsor@gmail.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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- 29 3月, 2017 1 次提交
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由 Goldwyn Rodrigues 提交于
Using an int value is causing qg->reserved to become negative and exclusive -EDQUOT to be reached prematurely. This affects exclusive qgroups only. TEST CASE: DEVICE=/dev/vdb MOUNTPOINT=/mnt SUBVOL=$MOUNTPOINT/tmp umount $SUBVOL umount $MOUNTPOINT mkfs.btrfs -f $DEVICE mount /dev/vdb $MOUNTPOINT btrfs quota enable $MOUNTPOINT btrfs subvol create $SUBVOL umount $MOUNTPOINT mount /dev/vdb $MOUNTPOINT mount -o subvol=tmp $DEVICE $SUBVOL btrfs qgroup limit -e 3G $SUBVOL btrfs quota rescan /mnt -w for i in `seq 1 44000`; do dd if=/dev/zero of=/mnt/tmp/test_$i bs=10k count=1 if [[ $? > 0 ]]; then btrfs qgroup show -pcref $SUBVOL exit 1 fi done Signed-off-by: NGoldwyn Rodrigues <rgoldwyn@suse.com> [ add reproducer to changelog ] Signed-off-by: NDavid Sterba <dsterba@suse.com>
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- 28 2月, 2017 4 次提交
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由 David Sterba 提交于
Make extent_io_ops::readpage_io_failed_hook callback mandatory and define a dummy function for btrfs_extent_io_ops. As the failed IO callback is not performance critical, the branch vs extra trade off does not hurt. Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
Some of the callbacks defined in btree_extent_io_ops and btrfs_extent_io_ops do always exist so we don't need to check the existence before each call. This patch just reorders the definition and documents which are mandatory/optional. Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
The function does not modify the input buffer, also update a typecast in one caller. Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Nikolay Borisov 提交于
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: NNikolay Borisov <nborisov@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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- 24 2月, 2017 2 次提交
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由 Filipe Manana 提交于
Before we destroy all work queues (and wait for their tasks to complete) we were destroying the work queues used for metadata I/O operations, which can result in a use-after-free problem because most tasks from all work queues do metadata I/O operations. For example, the tasks from the caching workers work queue (fs_info->caching_workers), which is destroyed only after the work queue used for metadata reads (fs_info->endio_meta_workers) is destroyed, do metadata reads, which result in attempts to queue tasks into the later work queue, triggering a use-after-free with a trace like the following: [23114.613543] general protection fault: 0000 [#1] PREEMPT SMP [23114.614442] Modules linked in: dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio libcrc32c btrfs xor raid6_pq dm_flakey dm_mod crc32c_generic acpi_cpufreq tpm_tis tpm_tis_core tpm ppdev parport_pc parport i2c_piix4 processor sg evdev i2c_core psmouse pcspkr serio_raw button loop autofs4 ext4 crc16 jbd2 mbcache sr_mod cdrom sd_mod ata_generic virtio_scsi ata_piix virtio_pci libata virtio_ring virtio e1000 scsi_mod floppy [last unloaded: scsi_debug] [23114.616932] CPU: 9 PID: 4537 Comm: kworker/u32:8 Not tainted 4.9.0-rc7-btrfs-next-36+ #1 [23114.616932] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014 [23114.616932] Workqueue: btrfs-cache btrfs_cache_helper [btrfs] [23114.616932] task: ffff880221d45780 task.stack: ffffc9000bc50000 [23114.616932] RIP: 0010:[<ffffffffa037c1bf>] [<ffffffffa037c1bf>] btrfs_queue_work+0x2c/0x190 [btrfs] [23114.616932] RSP: 0018:ffff88023f443d60 EFLAGS: 00010246 [23114.616932] RAX: 0000000000000000 RBX: 6b6b6b6b6b6b6b6b RCX: 0000000000000102 [23114.616932] RDX: ffffffffa0419000 RSI: ffff88011df534f0 RDI: ffff880101f01c00 [23114.616932] RBP: ffff88023f443d80 R08: 00000000000f7000 R09: 000000000000ffff [23114.616932] R10: ffff88023f443d48 R11: 0000000000001000 R12: ffff88011df534f0 [23114.616932] R13: ffff880135963868 R14: 0000000000001000 R15: 0000000000001000 [23114.616932] FS: 0000000000000000(0000) GS:ffff88023f440000(0000) knlGS:0000000000000000 [23114.616932] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [23114.616932] CR2: 00007f0fb9f8e520 CR3: 0000000001a0b000 CR4: 00000000000006e0 [23114.616932] Stack: [23114.616932] ffff880101f01c00 ffff88011df534f0 ffff880135963868 0000000000001000 [23114.616932] ffff88023f443da0 ffffffffa03470af ffff880149b37200 ffff880135963868 [23114.616932] ffff88023f443db8 ffffffff8125293c ffff880149b37200 ffff88023f443de0 [23114.616932] Call Trace: [23114.616932] <IRQ> [23114.616932] [<ffffffffa03470af>] end_workqueue_bio+0xd5/0xda [btrfs] [23114.616932] [<ffffffff8125293c>] bio_endio+0x54/0x57 [23114.616932] [<ffffffffa0377929>] btrfs_end_bio+0xf7/0x106 [btrfs] [23114.616932] [<ffffffff8125293c>] bio_endio+0x54/0x57 [23114.616932] [<ffffffff8125955f>] blk_update_request+0x21a/0x30f [23114.616932] [<ffffffffa0022316>] scsi_end_request+0x31/0x182 [scsi_mod] [23114.616932] [<ffffffffa00235fc>] scsi_io_completion+0x1ce/0x4c8 [scsi_mod] [23114.616932] [<ffffffffa001ba9d>] scsi_finish_command+0x104/0x10d [scsi_mod] [23114.616932] [<ffffffffa002311f>] scsi_softirq_done+0x101/0x10a [scsi_mod] [23114.616932] [<ffffffff8125fbd9>] blk_done_softirq+0x82/0x8d [23114.616932] [<ffffffff814c8a4b>] __do_softirq+0x1ab/0x412 [23114.616932] [<ffffffff8105b01d>] irq_exit+0x49/0x99 [23114.616932] [<ffffffff81035135>] smp_call_function_single_interrupt+0x24/0x26 [23114.616932] [<ffffffff814c7ec9>] call_function_single_interrupt+0x89/0x90 [23114.616932] <EOI> [23114.616932] [<ffffffffa0023262>] ? scsi_request_fn+0x13a/0x2a1 [scsi_mod] [23114.616932] [<ffffffff814c5966>] ? _raw_spin_unlock_irq+0x2c/0x4a [23114.616932] [<ffffffff814c596c>] ? _raw_spin_unlock_irq+0x32/0x4a [23114.616932] [<ffffffff814c5966>] ? _raw_spin_unlock_irq+0x2c/0x4a [23114.616932] [<ffffffffa0023262>] scsi_request_fn+0x13a/0x2a1 [scsi_mod] [23114.616932] [<ffffffff8125590e>] __blk_run_queue_uncond+0x22/0x2b [23114.616932] [<ffffffff81255930>] __blk_run_queue+0x19/0x1b [23114.616932] [<ffffffff8125ab01>] blk_queue_bio+0x268/0x282 [23114.616932] [<ffffffff81258f44>] generic_make_request+0xbd/0x160 [23114.616932] [<ffffffff812590e7>] submit_bio+0x100/0x11d [23114.616932] [<ffffffff81298603>] ? __this_cpu_preempt_check+0x13/0x15 [23114.616932] [<ffffffff812a1805>] ? __percpu_counter_add+0x8e/0xa7 [23114.616932] [<ffffffffa03bfd47>] btrfsic_submit_bio+0x1a/0x1d [btrfs] [23114.616932] [<ffffffffa0377db2>] btrfs_map_bio+0x1f4/0x26d [btrfs] [23114.616932] [<ffffffffa0348a33>] btree_submit_bio_hook+0x74/0xbf [btrfs] [23114.616932] [<ffffffffa03489bf>] ? btrfs_wq_submit_bio+0x160/0x160 [btrfs] [23114.616932] [<ffffffffa03697a9>] submit_one_bio+0x6b/0x89 [btrfs] [23114.616932] [<ffffffffa036f5be>] read_extent_buffer_pages+0x170/0x1ec [btrfs] [23114.616932] [<ffffffffa03471fa>] ? free_root_pointers+0x64/0x64 [btrfs] [23114.616932] [<ffffffffa0348adf>] readahead_tree_block+0x3f/0x4c [btrfs] [23114.616932] [<ffffffffa032e115>] read_block_for_search.isra.20+0x1ce/0x23d [btrfs] [23114.616932] [<ffffffffa032fab8>] btrfs_search_slot+0x65f/0x774 [btrfs] [23114.616932] [<ffffffffa036eff1>] ? free_extent_buffer+0x73/0x7e [btrfs] [23114.616932] [<ffffffffa0331ba4>] btrfs_next_old_leaf+0xa1/0x33c [btrfs] [23114.616932] [<ffffffffa0331e4f>] btrfs_next_leaf+0x10/0x12 [btrfs] [23114.616932] [<ffffffffa0336aa6>] caching_thread+0x22d/0x416 [btrfs] [23114.616932] [<ffffffffa037bce9>] btrfs_scrubparity_helper+0x187/0x3b6 [btrfs] [23114.616932] [<ffffffffa037c036>] btrfs_cache_helper+0xe/0x10 [btrfs] [23114.616932] [<ffffffff8106cf96>] process_one_work+0x273/0x4e4 [23114.616932] [<ffffffff8106d6db>] worker_thread+0x1eb/0x2ca [23114.616932] [<ffffffff8106d4f0>] ? rescuer_thread+0x2b6/0x2b6 [23114.616932] [<ffffffff81072a81>] kthread+0xd5/0xdd [23114.616932] [<ffffffff810729ac>] ? __kthread_unpark+0x5a/0x5a [23114.616932] [<ffffffff814c6257>] ret_from_fork+0x27/0x40 [23114.616932] Code: 1f 44 00 00 55 48 89 e5 41 56 41 55 41 54 53 49 89 f4 48 8b 46 70 a8 04 74 09 48 8b 5f 08 48 85 db 75 03 48 8b 1f 49 89 5c 24 68 <83> 7b 64 ff 74 04 f0 ff 43 58 49 83 7c 24 08 00 74 2c 4c 8d 6b [23114.616932] RIP [<ffffffffa037c1bf>] btrfs_queue_work+0x2c/0x190 [btrfs] [23114.616932] RSP <ffff88023f443d60> [23114.689493] ---[ end trace 6e48b6bc707ca34b ]--- [23114.690166] Kernel panic - not syncing: Fatal exception in interrupt [23114.691283] Kernel Offset: disabled [23114.691918] ---[ end Kernel panic - not syncing: Fatal exception in interrupt The following diagram shows the sequence of operations that lead to the use-after-free problem from the above trace: CPU 1 CPU 2 CPU 3 caching_thread() close_ctree() btrfs_stop_all_workers() btrfs_destroy_workqueue( fs_info->endio_meta_workers) btrfs_search_slot() read_block_for_search() readahead_tree_block() read_extent_buffer_pages() submit_one_bio() btree_submit_bio_hook() btrfs_bio_wq_end_io() --> sets the bio's bi_end_io callback to end_workqueue_bio() --> bio is submitted bio completes and its bi_end_io callback is invoked --> end_workqueue_bio() --> attempts to queue a task on fs_info->endio_meta_workers btrfs_destroy_workqueue( fs_info->caching_workers) So fix this by destroying the queues used for metadata I/O tasks only after destroying all the other queues. Signed-off-by: NFilipe Manana <fdmanana@suse.com> Reviewed-by: NLiu Bo <bo.li.liu@oracle.com>
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由 Filipe Manana 提交于
At close_ctree() we free the block groups and then only after we wait for any running worker kthreads to finish and shutdown the workqueues. This behaviour is racy and it triggers an assertion failure when freeing block groups because while we are doing it we can have for example a block group caching kthread running, and in that case the block group's reference count can still be greater than 1 by the time we assert its reference count is 1, leading to an assertion failure: [19041.198004] assertion failed: atomic_read(&block_group->count) == 1, file: fs/btrfs/extent-tree.c, line: 9799 [19041.200584] ------------[ cut here ]------------ [19041.201692] kernel BUG at fs/btrfs/ctree.h:3418! [19041.202830] invalid opcode: 0000 [#1] PREEMPT SMP [19041.203929] Modules linked in: btrfs xor raid6_pq dm_flakey dm_mod crc32c_generic ppdev sg psmouse acpi_cpufreq pcspkr parport_pc evdev tpm_tis parport tpm_tis_core i2c_piix4 i2c_core tpm serio_raw processor button loop autofs4 ext4 crc16 jbd2 mbcache sr_mod cdrom sd_mod ata_generic virtio_scsi ata_piix virtio_pci libata virtio_ring virtio e1000 scsi_mod floppy [last unloaded: btrfs] [19041.208082] CPU: 6 PID: 29051 Comm: umount Not tainted 4.9.0-rc7-btrfs-next-36+ #1 [19041.208082] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014 [19041.208082] task: ffff88015f028980 task.stack: ffffc9000ad34000 [19041.208082] RIP: 0010:[<ffffffffa03e319e>] [<ffffffffa03e319e>] assfail.constprop.41+0x1c/0x1e [btrfs] [19041.208082] RSP: 0018:ffffc9000ad37d60 EFLAGS: 00010286 [19041.208082] RAX: 0000000000000061 RBX: ffff88015ecb4000 RCX: 0000000000000001 [19041.208082] RDX: ffff88023f392fb8 RSI: ffffffff817ef7ba RDI: 00000000ffffffff [19041.208082] RBP: ffffc9000ad37d60 R08: 0000000000000001 R09: 0000000000000000 [19041.208082] R10: ffffc9000ad37cb0 R11: ffffffff82f2b66d R12: ffff88023431d170 [19041.208082] R13: ffff88015ecb40c0 R14: ffff88023431d000 R15: ffff88015ecb4100 [19041.208082] FS: 00007f44f3d42840(0000) GS:ffff88023f380000(0000) knlGS:0000000000000000 [19041.208082] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [19041.208082] CR2: 00007f65d623b000 CR3: 00000002166f2000 CR4: 00000000000006e0 [19041.208082] Stack: [19041.208082] ffffc9000ad37d98 ffffffffa035989f ffff88015ecb4000 ffff88015ecb5630 [19041.208082] ffff88014f6be000 0000000000000000 00007ffcf0ba6a10 ffffc9000ad37df8 [19041.208082] ffffffffa0368cd4 ffff88014e9658e0 ffffc9000ad37e08 ffffffff811a634d [19041.208082] Call Trace: [19041.208082] [<ffffffffa035989f>] btrfs_free_block_groups+0x17f/0x392 [btrfs] [19041.208082] [<ffffffffa0368cd4>] close_ctree+0x1c5/0x2e1 [btrfs] [19041.208082] [<ffffffff811a634d>] ? evict_inodes+0x132/0x141 [19041.208082] [<ffffffffa034356d>] btrfs_put_super+0x15/0x17 [btrfs] [19041.208082] [<ffffffff8118fc32>] generic_shutdown_super+0x6a/0xeb [19041.208082] [<ffffffff8119004f>] kill_anon_super+0x12/0x1c [19041.208082] [<ffffffffa0343370>] btrfs_kill_super+0x16/0x21 [btrfs] [19041.208082] [<ffffffff8118fad1>] deactivate_locked_super+0x3b/0x68 [19041.208082] [<ffffffff8118fb34>] deactivate_super+0x36/0x39 [19041.208082] [<ffffffff811a9946>] cleanup_mnt+0x58/0x76 [19041.208082] [<ffffffff811a99a2>] __cleanup_mnt+0x12/0x14 [19041.208082] [<ffffffff81071573>] task_work_run+0x6f/0x95 [19041.208082] [<ffffffff81001897>] prepare_exit_to_usermode+0xa3/0xc1 [19041.208082] [<ffffffff81001a23>] syscall_return_slowpath+0x16e/0x1d2 [19041.208082] [<ffffffff814c607d>] entry_SYSCALL_64_fastpath+0xab/0xad [19041.208082] Code: c7 ae a0 3e a0 48 89 e5 e8 4e 74 d4 e0 0f 0b 55 89 f1 48 c7 c2 0b a4 3e a0 48 89 fe 48 c7 c7 a4 a6 3e a0 48 89 e5 e8 30 74 d4 e0 <0f> 0b 55 31 d2 48 89 e5 e8 d5 b9 f7 ff 5d c3 48 63 f6 55 31 c9 [19041.208082] RIP [<ffffffffa03e319e>] assfail.constprop.41+0x1c/0x1e [btrfs] [19041.208082] RSP <ffffc9000ad37d60> [19041.279264] ---[ end trace 23330586f16f064d ]--- This started happening as of kernel 4.8, since commit f3bca802 ("Btrfs: add ASSERT for block group's memory leak") introduced these assertions. So fix this by freeing the block groups only after waiting for all worker kthreads to complete and shutdown the workqueues. Signed-off-by: NFilipe Manana <fdmanana@suse.com> Reviewed-by: NLiu Bo <bo.li.liu@oracle.com>
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- 17 2月, 2017 5 次提交
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由 David Sterba 提交于
None of the checks need to know the ro/rw status as they're all not changing the superblock. Moreover, we can access the sb flags directly if we'd need to decide by the ro/rw status. Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
write_all_supers and write_ctree_super are almost equal, the parameter 'trans' is unused so we can drop it and have just one helper. Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
The barriers are handled by the caller. Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
Added but never needed. Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
Added but never used. Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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- 02 2月, 2017 1 次提交
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由 Jan Kara 提交于
blk_get_backing_dev_info() is now a simple dereference. Remove that function and simplify some code around that. Signed-off-by: NJan Kara <jack@suse.cz> Signed-off-by: NJens Axboe <axboe@fb.com>
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- 06 12月, 2016 10 次提交
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由 David Sterba 提交于
The helpers are trivial and we don't use them consistently. Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
Now we only use the root parameter to print the root objectid in a tracepoint. We can use the root parameter from the transaction handle for that. It's also used to join the transaction with async commits, so we remove the comment that it's just for checking. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
There are loads of functions in btrfs that accept a root parameter but only use it to obtain an fs_info pointer. Let's convert those to just accept an fs_info pointer directly. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
This results in btrfs_assert_delayed_root_empty and btrfs_destroy_delayed_inode taking an fs_info instead of a root. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
In routines where someptr->fs_info is referenced multiple times, we introduce a convenience variable. This makes the code considerably more readable. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
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: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
There are many functions that are always called with the same root argument. Rather than passing the same root every time, we can pass an fs_info pointer instead and have the function get the root pointer itself. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
There are 11 functions that accept a root parameter and immediately overwrite it. We can pass those an fs_info pointer instead. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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- 30 11月, 2016 3 次提交
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由 Wang Xiaoguang 提交于
This issue was found when I tried to delete a heavily reflinked file, when deleting such files, other transaction operation will not have a chance to make progress, for example, start_transaction() will blocked in wait_current_trans(root) for long time, sometimes it even triggers soft lockups, and the time taken to delete such heavily reflinked file is also very large, often hundreds of seconds. Using perf top, it reports that: PerfTop: 7416 irqs/sec kernel:99.8% exact: 0.0% [4000Hz cpu-clock], (all, 4 CPUs) --------------------------------------------------------------------------------------- 84.37% [btrfs] [k] __btrfs_run_delayed_refs.constprop.80 11.02% [kernel] [k] delay_tsc 0.79% [kernel] [k] _raw_spin_unlock_irq 0.78% [kernel] [k] _raw_spin_unlock_irqrestore 0.45% [kernel] [k] do_raw_spin_lock 0.18% [kernel] [k] __slab_alloc It seems __btrfs_run_delayed_refs() took most cpu time, after some debug work, I found it's select_delayed_ref() causing this issue, for a delayed head, in our case, it'll be full of BTRFS_DROP_DELAYED_REF nodes, but select_delayed_ref() will firstly try to iterate node list to find BTRFS_ADD_DELAYED_REF nodes, obviously it's a disaster in this case, and waste much time. To fix this issue, we introduce a new ref_add_list in struct btrfs_delayed_ref_head, then in select_delayed_ref(), if this list is not empty, we can directly use nodes in this list. With this patch, it just took about 10~15 seconds to delte the same file. Now using perf top, it reports that: PerfTop: 2734 irqs/sec kernel:99.5% exact: 0.0% [4000Hz cpu-clock], (all, 4 CPUs) ---------------------------------------------------------------------------------------- 20.74% [kernel] [k] _raw_spin_unlock_irqrestore 16.33% [kernel] [k] __slab_alloc 5.41% [kernel] [k] lock_acquired 4.42% [kernel] [k] lock_acquire 4.05% [kernel] [k] lock_release 3.37% [kernel] [k] _raw_spin_unlock_irq For normal files, this patch also gives help, at least we do not need to iterate whole list to found BTRFS_ADD_DELAYED_REF nodes. Signed-off-by: NWang Xiaoguang <wangxg.fnst@cn.fujitsu.com> Reviewed-by: NLiu Bo <bo.li.liu@oracle.com> Tested-by: NHolger Hoffstätte <holger@applied-asynchrony.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Domagoj Tršan 提交于
csum member of struct btrfs_super_block has array type of u8. It makes sense that function btrfs_csum_final should be also declared to accept u8 *. I changed the declaration of method void btrfs_csum_final(u32 crc, char *result); to void btrfs_csum_final(u32 crc, u8 *result); Signed-off-by: NDomagoj Tršan <domagoj.trsan@gmail.com> [ changed cast to u8 at several call sites ] Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
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: NDavid Sterba <dsterba@suse.com>
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