Re: [3.16-rc1] BUG: soft lockup - CPU#0 stuck for 23s! [kworker/u25:4:5189]

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It looks like I just hit this on rc4.  (I compiled the earlier rc
versions, but hadn't rebooted until yesterday.)

I don't think I see anything in the git log since rc1 which is relevant,
but just in case one of those tried to fix this, its still there.

The stuck processes are:

]btrfs-transacti] btrfs_wait_and_free_delalloc_work
rsync             writeback_inodes_sb_nr
rsync             reserve_metadata_bytes
git-merge         sleep_on_page_killable
/bin/sync         sync_inodes_sb

(The two rsync processes are separate; each to its one directory.)

The fs with those processes is mounted with noatime,compress.

Interestingly, I also use btrfs /var/log, also with noatime,compress,
but that one is fine.

-JimC
-- 
James Cloos <cloos@xxxxxxxxxxx>         OpenPGP: 0x997A9F17ED7DAEA6
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