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f4768ffd1d
The previous patch which limited the number of sectors in a single request to a COWed device was correct in concept, but the limit was implemented in the wrong place. By putting it in ubd_add, it covered the cases where the COWing was specified on the command line. However, when the command line only has the COW file specified, the fact that it's a COW file isn't known until it's opened, so the limit is missed in these cases. This patch moves the sector limit from ubd_add to ubd_open_dev. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>