vfs: Avoid integer overflow when faultingHEADmain

In vn_io_fault1(), the read / write length can easily exceed INT_MAX.
Passing it directly to uiomove(), which expects an int, results in a
negative uio_resid, which to the caller looks like we read more than
was requested.

PR:		298159
MFC after:	1 week
Reviewed by:	olce, kib
Differential Revision:	https://reviews.freebsd.org/D59412

0 files changed, 0 insertions, 0 deletions