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504081c415
[ Upstream commit bb385bedded3ccbd794559600de4a09448810f4a ] If we get an error while looking up the inode item we'll simply bail without cleaning up the delayed node. This results in this style of warning happening on commit: WARNING: CPU: 0 PID: 76403 at fs/btrfs/delayed-inode.c:1365 btrfs_assert_delayed_root_empty+0x5b/0x90 CPU: 0 PID: 76403 Comm: fsstress Tainted: G W 5.13.0-rc1+ #373 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014 RIP: 0010:btrfs_assert_delayed_root_empty+0x5b/0x90 RSP: 0018:ffffb8bb815a7e50 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff95d6d07e1888 RCX: ffff95d6c0fa3000 RDX: 0000000000000002 RSI: 000000000029e91c RDI: ffff95d6c0fc8060 RBP: ffff95d6c0fc8060 R08: 00008d6d701a2c1d R09: 0000000000000000 R10: ffff95d6d1760ea0 R11: 0000000000000001 R12: ffff95d6c15a4d00 R13: ffff95d6c0fa3000 R14: 0000000000000000 R15: ffffb8bb815a7e90 FS: 00007f490e8dbb80(0000) GS:ffff95d73bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6e75555cb0 CR3: 00000001101ce001 CR4: 0000000000370ef0 Call Trace: btrfs_commit_transaction+0x43c/0xb00 ? finish_wait+0x80/0x80 ? vfs_fsync_range+0x90/0x90 iterate_supers+0x8c/0x100 ksys_sync+0x50/0x90 __do_sys_sync+0xa/0x10 do_syscall_64+0x3d/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae Because the iref isn't dropped and this leaves an elevated node->count, so any release just re-queues it onto the delayed inodes list. Fix this by going to the out label to handle the proper cleanup of the delayed node. Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.