[Bug 25832] kernel crashes upon resume if usb devices are removed when suspended

https://bugzilla.kernel.org/show_bug.cgi?id=25832

--- Comment #27 from Theodore Tso <tytso@mit.edu>  2011-02-07 15:35:59 ---

There is shared umount code paths that are used by all file systems in
fs/super.c, in the VFS layer, of course.

But again, unless you or some userspace program has explicitly requested a
umount, a umount does not happen just because a disk drive has disappeared.  So
if you are locking up right after a resume, there wouldn't have been any _time_
for you or some userspace program to request an umount.   And certainly the
standard desktop userspace programs (e.g., the GNOME desktop) do not
automagically look for kernel I/O error messages caused by a disk disappearing,
and then umount the file system automagically.

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