On Mon, May 07, 2018 at 10:13:32AM -0600, Jens Axboe wrote: > Don't build discards bigger than what the user asked for, if the > user decided to limit the size by writing to 'discard_max_bytes'. > > Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Seems fine to me, Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> --D > --- > block/blk-lib.c | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/block/blk-lib.c b/block/blk-lib.c > index a676084d4740..7417d617091b 100644 > --- a/block/blk-lib.c > +++ b/block/blk-lib.c > @@ -62,10 +62,11 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector, > unsigned int req_sects; > sector_t end_sect, tmp; > > - /* Make sure bi_size doesn't overflow */ > - req_sects = min_t(sector_t, nr_sects, UINT_MAX >> 9); > + /* Issue in chunks of the user defined max discard setting */ > + req_sects = min_t(sector_t, nr_sects, > + q->limits.max_discard_sectors); > > - /** > + /* > * If splitting a request, and the next starting sector would be > * misaligned, stop the discard at the previous aligned sector. > */ > -- > 2.7.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-xfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html
