tree 62a198ce3602ceda172890a2a17c8001624a29f8
parent 98d54f81e36ba3bf92172791eba5ca5bd813989b
author Domenico Andreoli <domenico.andreoli@linux.com> 1584976935 -0700
committer Darrick J. Wong <darrick.wong@oracle.com> 1584976935 -0700

hibernate: Allow uswsusp to write to swap

It turns out that there is one use case for programs being able to
write to swap devices, and that is the userspace hibernation code.

Quick fix: disable the S_SWAPFILE check if hibernation is configured.

Fixes: dc617f29dbe5 ("vfs: don't allow writes to swap files")
Reported-by: Domenico Andreoli <domenico.andreoli@linux.com>
Reported-by: Marian Klein <mkleinsoft@gmail.com>
Signed-off-by: Domenico Andreoli <domenico.andreoli@linux.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>