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| Filename | Latest commit message | Latest commit date |
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2e949b0a55
When doing directIO repair, we have this oops: [ 1458.532816] general protection fault: 0000 [#1] SMP ... [ 1458.536291] Workqueue: btrfs-endio-repair btrfs_endio_repair_helper [btrfs] [ 1458.536893] task: ffff88082a42d100 task.stack: ffffc90002b3c000 [ 1458.537499] RIP: 0010:btrfs_retry_endio+0x7e/0x1a0 [btrfs] ... [ 1458.543261] Call Trace: [ 1458.543958] ? rcu_read_lock_sched_held+0xc4/0xd0 [ 1458.544374] bio_endio+0xed/0x100 [ 1458.544750] end_workqueue_fn+0x3c/0x40 [btrfs] [ 1458.545257] normal_work_helper+0x9f/0x900 [btrfs] [ 1458.545762] btrfs_endio_repair_helper+0x12/0x20 [btrfs] [ 1458.546224] process_one_work+0x34d/0xb70 [ 1458.546570] ? process_one_work+0x29e/0xb70 [ 1458.546938] worker_thread+0x1cf/0x960 [ 1458.547263] ? process_one_work+0xb70/0xb70 [ 1458.547624] kthread+0x17d/0x180 [ 1458.547909] ? kthread_create_on_node+0x70/0x70 [ 1458.548300] ret_from_fork+0x31/0x40 It turns out that btrfs_retry_endio is trying to get inode from a directIO page. This fixes the problem by using the saved inode pointer, done->inode. btrfs_retry_endio_nocsum has the same problem, and it's fixed as well. Also cleanup unused @start (which is too trivial for a separate patch). Cc: David Sterba <dsterba@suse.cz> Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.