Lines Matching full:discard
156 * feature-discard
189 * discard the grants that are less commonly used. Using a LRU in the
214 * discard-enable
219 * to offer (or not to offer) discard to the frontend. If the property
220 * is missing the backend should offer discard if the backing storage
223 * discard-alignment
229 * to the first, addressable, discard extent on the underlying device.
231 * discard-granularity
236 * The size, in bytes, of the individually addressable discard extents
239 * discard-secure
393 * (4) Devices that support discard functionality may internally allocate space
396 * backend should provide both discard-granularity and discard-alignment.
398 * Backends supporting discard should include discard-granularity and
399 * discard-alignment even if it supports discarding individual sectors.
400 * Frontends should assume discard-alignment == 0 and discard-granularity
402 * (5) The discard-alignment parameter allows a physical device to be
420 *(10) The discard-secure property may be present and will be set to 1 if the
421 * backing device supports secure discard.
588 * Optional. See "feature-discard", "discard-alignment",
589 * "discard-granularity", and "discard-secure" in the XenBus node
664 #define BLKIF_DISCARD_SECURE (1<<0) /* ignored if discard-secure=0 */
668 uint64_t nr_sectors; /* number of contiguous sectors to discard*/