| Message ID | 1460479373-63317-4-git-send-email-bfoster@redhat.com (mailing list archive) |
|---|---|
| State | Deferred, archived |
| Delegated to: | Mike Snitzer |
| Headers | show |
On Tue, Apr 12, 2016 at 12:42:46PM -0400, Brian Foster wrote: > From: Mike Snitzer <snitzer@redhat.com> > > [BF: > - Killed wrapper functions. > - Condensed to single bdev op.] > > Signed-off-by: Mike Snitzer <snitzer@redhat.com> > --- > include/linux/blkdev.h | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h > index 669e419..6c6ea96 100644 > --- a/include/linux/blkdev.h > +++ b/include/linux/blkdev.h > @@ -1650,6 +1650,10 @@ struct blk_dax_ctl { > pfn_t pfn; > }; > > +#define BDEV_RES_GET 0 > +#define BDEV_RES_MOD (1 << 0) > +#define BDEV_RES_PROVISION (1 << 1) > + > struct block_device_operations { > int (*open) (struct block_device *, fmode_t); > void (*release) (struct gendisk *, fmode_t); > @@ -1667,6 +1671,8 @@ struct block_device_operations { > int (*getgeo)(struct block_device *, struct hd_geometry *); > /* this callback is with swap_lock and sometimes page table lock held */ > void (*swap_slot_free_notify) (struct block_device *, unsigned long); > + int (*reserve_space) (struct block_device *, int, sector_t, sector_t, > + sector_t *); > struct module *owner; > const struct pr_ops *pr_ops; You know, I'm now wondering how much of this has overlap with the iomap interface we are adding for the VFS IO paths to map and allocate extents.... Cheers, Dave.
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 669e419..6c6ea96 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1650,6 +1650,10 @@ struct blk_dax_ctl { pfn_t pfn; }; +#define BDEV_RES_GET 0 +#define BDEV_RES_MOD (1 << 0) +#define BDEV_RES_PROVISION (1 << 1) + struct block_device_operations { int (*open) (struct block_device *, fmode_t); void (*release) (struct gendisk *, fmode_t); @@ -1667,6 +1671,8 @@ struct block_device_operations { int (*getgeo)(struct block_device *, struct hd_geometry *); /* this callback is with swap_lock and sometimes page table lock held */ void (*swap_slot_free_notify) (struct block_device *, unsigned long); + int (*reserve_space) (struct block_device *, int, sector_t, sector_t, + sector_t *); struct module *owner; const struct pr_ops *pr_ops; };