Similar to FreeBSD stop issuing prefetches on POSIX_FADV_SEQUENTIAL.
It should not have this semantics, only hint speculative prefetcher,
if access ever happen later. Instead after POSIX_FADV_WILLNEED
handling call generic_fadvise(), if available, to do all the generic
stuff, including setting f_mode in struct file, that we could later
use to control prefetcher as part of read/write operations.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes#18395
Alexander Motin
63b8da8ff7