| Message ID | 1478034531-28559-2-git-send-email-axboe@fb.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Nov 01, 2016 at 03:08:44PM -0600, Jens Axboe wrote: > This adds a new request flag, REQ_BACKGROUND, that callers can use to > tell the block layer that this is background (non-urgent) IO. The subject still says WRITE_BACKGROUND :) Otherwise looks fine: Reviewed-by: Christoph Hellwig <hch@lst.de> -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, Nov 02 2016, Christoph Hellwig wrote: > On Tue, Nov 01, 2016 at 03:08:44PM -0600, Jens Axboe wrote: > > This adds a new request flag, REQ_BACKGROUND, that callers can use to > > tell the block layer that this is background (non-urgent) IO. > > The subject still says WRITE_BACKGROUND :) Gah - will fix that up. > Otherwise looks fine: > > Reviewed-by: Christoph Hellwig <hch@lst.de> Added, thanks.
On Tue 01-11-16 15:08:44, Jens Axboe wrote: > This adds a new request flag, REQ_BACKGROUND, that callers can use to > tell the block layer that this is background (non-urgent) IO. > > Signed-off-by: Jens Axboe <axboe@fb.com> Looks good. You can add: Reviewed-by: Jan Kara <jack@suse.cz> Honza > --- > include/linux/blk_types.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h > index bb921028e7c5..562ac46cb790 100644 > --- a/include/linux/blk_types.h > +++ b/include/linux/blk_types.h > @@ -177,6 +177,7 @@ enum req_flag_bits { > __REQ_FUA, /* forced unit access */ > __REQ_PREFLUSH, /* request for cache flush */ > __REQ_RAHEAD, /* read ahead, can fail anytime */ > + __REQ_BACKGROUND, /* background IO */ > __REQ_NR_BITS, /* stops here */ > }; > > @@ -192,6 +193,7 @@ enum req_flag_bits { > #define REQ_FUA (1ULL << __REQ_FUA) > #define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH) > #define REQ_RAHEAD (1ULL << __REQ_RAHEAD) > +#define REQ_BACKGROUND (1ULL << __REQ_BACKGROUND) > > #define REQ_FAILFAST_MASK \ > (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER) > -- > 2.7.4 >
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index bb921028e7c5..562ac46cb790 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -177,6 +177,7 @@ enum req_flag_bits { __REQ_FUA, /* forced unit access */ __REQ_PREFLUSH, /* request for cache flush */ __REQ_RAHEAD, /* read ahead, can fail anytime */ + __REQ_BACKGROUND, /* background IO */ __REQ_NR_BITS, /* stops here */ }; @@ -192,6 +193,7 @@ enum req_flag_bits { #define REQ_FUA (1ULL << __REQ_FUA) #define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH) #define REQ_RAHEAD (1ULL << __REQ_RAHEAD) +#define REQ_BACKGROUND (1ULL << __REQ_BACKGROUND) #define REQ_FAILFAST_MASK \ (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
This adds a new request flag, REQ_BACKGROUND, that callers can use to tell the block layer that this is background (non-urgent) IO. Signed-off-by: Jens Axboe <axboe@fb.com> --- include/linux/blk_types.h | 2 ++ 1 file changed, 2 insertions(+)