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-rw-r--r--drivers/block/xen-blkback/blkback.c104
-rw-r--r--drivers/block/xen-blkback/common.h96
2 files changed, 104 insertions, 96 deletions
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index 243712b59a05..c362f4ad80ab 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -1072,7 +1072,111 @@ static void end_block_io_op(struct bio *bio)
bio_put(bio);
}
+static void blkif_get_x86_32_req(struct blkif_request *dst,
+ const struct blkif_x86_32_request *src)
+{
+ unsigned int i, n;
+
+ dst->operation = READ_ONCE(src->operation);
+
+ switch (dst->operation) {
+ case BLKIF_OP_READ:
+ case BLKIF_OP_WRITE:
+ case BLKIF_OP_WRITE_BARRIER:
+ case BLKIF_OP_FLUSH_DISKCACHE:
+ dst->u.rw.nr_segments = READ_ONCE(src->u.rw.nr_segments);
+ dst->u.rw.handle = src->u.rw.handle;
+ dst->u.rw.id = src->u.rw.id;
+ dst->u.rw.sector_number = src->u.rw.sector_number;
+ n = min_t(unsigned int, BLKIF_MAX_SEGMENTS_PER_REQUEST,
+ dst->u.rw.nr_segments);
+ for (i = 0; i < n; i++)
+ dst->u.rw.seg[i] = src->u.rw.seg[i];
+ break;
+
+ case BLKIF_OP_DISCARD:
+ dst->u.discard.flag = src->u.discard.flag;
+ dst->u.discard.id = src->u.discard.id;
+ dst->u.discard.sector_number = src->u.discard.sector_number;
+ dst->u.discard.nr_sectors = src->u.discard.nr_sectors;
+ break;
+
+ case BLKIF_OP_INDIRECT:
+ dst->u.indirect.indirect_op = src->u.indirect.indirect_op;
+ dst->u.indirect.nr_segments =
+ READ_ONCE(src->u.indirect.nr_segments);
+ dst->u.indirect.handle = src->u.indirect.handle;
+ dst->u.indirect.id = src->u.indirect.id;
+ dst->u.indirect.sector_number = src->u.indirect.sector_number;
+ n = min(MAX_INDIRECT_PAGES,
+ INDIRECT_PAGES(dst->u.indirect.nr_segments));
+ for (i = 0; i < n; i++)
+ dst->u.indirect.indirect_grefs[i] =
+ src->u.indirect.indirect_grefs[i];
+ break;
+
+ default:
+ /*
+ * Don't know how to translate this op. Only get the
+ * ID so failure can be reported to the frontend.
+ */
+ dst->u.other.id = src->u.other.id;
+ break;
+ }
+}
+static void blkif_get_x86_64_req(struct blkif_request *dst,
+ const struct blkif_x86_64_request *src)
+{
+ unsigned int i, n;
+
+ dst->operation = READ_ONCE(src->operation);
+
+ switch (dst->operation) {
+ case BLKIF_OP_READ:
+ case BLKIF_OP_WRITE:
+ case BLKIF_OP_WRITE_BARRIER:
+ case BLKIF_OP_FLUSH_DISKCACHE:
+ dst->u.rw.nr_segments = READ_ONCE(src->u.rw.nr_segments);
+ dst->u.rw.handle = src->u.rw.handle;
+ dst->u.rw.id = src->u.rw.id;
+ dst->u.rw.sector_number = src->u.rw.sector_number;
+ n = min_t(unsigned int, BLKIF_MAX_SEGMENTS_PER_REQUEST,
+ dst->u.rw.nr_segments);
+ for (i = 0; i < n; i++)
+ dst->u.rw.seg[i] = src->u.rw.seg[i];
+ break;
+
+ case BLKIF_OP_DISCARD:
+ dst->u.discard.flag = src->u.discard.flag;
+ dst->u.discard.id = src->u.discard.id;
+ dst->u.discard.sector_number = src->u.discard.sector_number;
+ dst->u.discard.nr_sectors = src->u.discard.nr_sectors;
+ break;
+
+ case BLKIF_OP_INDIRECT:
+ dst->u.indirect.indirect_op = src->u.indirect.indirect_op;
+ dst->u.indirect.nr_segments =
+ READ_ONCE(src->u.indirect.nr_segments);
+ dst->u.indirect.handle = src->u.indirect.handle;
+ dst->u.indirect.id = src->u.indirect.id;
+ dst->u.indirect.sector_number = src->u.indirect.sector_number;
+ n = min(MAX_INDIRECT_PAGES,
+ INDIRECT_PAGES(dst->u.indirect.nr_segments));
+ for (i = 0; i < n; i++)
+ dst->u.indirect.indirect_grefs[i] =
+ src->u.indirect.indirect_grefs[i];
+ break;
+
+ default:
+ /*
+ * Don't know how to translate this op. Only get the
+ * ID so failure can be reported to the frontend.
+ */
+ dst->u.other.id = src->u.other.id;
+ break;
+ }
+}
/*
* Function to copy the from the ring buffer the 'struct blkif_request'
diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h
index fab8a8dee0da..40f67bfc052d 100644
--- a/drivers/block/xen-blkback/common.h
+++ b/drivers/block/xen-blkback/common.h
@@ -394,100 +394,4 @@ int xen_blkbk_barrier(struct xenbus_transaction xbt,
struct xenbus_device *xen_blkbk_xenbus(struct backend_info *be);
void xen_blkbk_unmap_purged_grants(struct work_struct *work);
-static inline void blkif_get_x86_32_req(struct blkif_request *dst,
- struct blkif_x86_32_request *src)
-{
- int i, n = BLKIF_MAX_SEGMENTS_PER_REQUEST, j;
- dst->operation = READ_ONCE(src->operation);
- switch (dst->operation) {
- case BLKIF_OP_READ:
- case BLKIF_OP_WRITE:
- case BLKIF_OP_WRITE_BARRIER:
- case BLKIF_OP_FLUSH_DISKCACHE:
- dst->u.rw.nr_segments = src->u.rw.nr_segments;
- dst->u.rw.handle = src->u.rw.handle;
- dst->u.rw.id = src->u.rw.id;
- dst->u.rw.sector_number = src->u.rw.sector_number;
- barrier();
- if (n > dst->u.rw.nr_segments)
- n = dst->u.rw.nr_segments;
- for (i = 0; i < n; i++)
- dst->u.rw.seg[i] = src->u.rw.seg[i];
- break;
- case BLKIF_OP_DISCARD:
- dst->u.discard.flag = src->u.discard.flag;
- dst->u.discard.id = src->u.discard.id;
- dst->u.discard.sector_number = src->u.discard.sector_number;
- dst->u.discard.nr_sectors = src->u.discard.nr_sectors;
- break;
- case BLKIF_OP_INDIRECT:
- dst->u.indirect.indirect_op = src->u.indirect.indirect_op;
- dst->u.indirect.nr_segments = src->u.indirect.nr_segments;
- dst->u.indirect.handle = src->u.indirect.handle;
- dst->u.indirect.id = src->u.indirect.id;
- dst->u.indirect.sector_number = src->u.indirect.sector_number;
- barrier();
- j = min(MAX_INDIRECT_PAGES, INDIRECT_PAGES(dst->u.indirect.nr_segments));
- for (i = 0; i < j; i++)
- dst->u.indirect.indirect_grefs[i] =
- src->u.indirect.indirect_grefs[i];
- break;
- default:
- /*
- * Don't know how to translate this op. Only get the
- * ID so failure can be reported to the frontend.
- */
- dst->u.other.id = src->u.other.id;
- break;
- }
-}
-
-static inline void blkif_get_x86_64_req(struct blkif_request *dst,
- struct blkif_x86_64_request *src)
-{
- int i, n = BLKIF_MAX_SEGMENTS_PER_REQUEST, j;
- dst->operation = READ_ONCE(src->operation);
- switch (dst->operation) {
- case BLKIF_OP_READ:
- case BLKIF_OP_WRITE:
- case BLKIF_OP_WRITE_BARRIER:
- case BLKIF_OP_FLUSH_DISKCACHE:
- dst->u.rw.nr_segments = src->u.rw.nr_segments;
- dst->u.rw.handle = src->u.rw.handle;
- dst->u.rw.id = src->u.rw.id;
- dst->u.rw.sector_number = src->u.rw.sector_number;
- barrier();
- if (n > dst->u.rw.nr_segments)
- n = dst->u.rw.nr_segments;
- for (i = 0; i < n; i++)
- dst->u.rw.seg[i] = src->u.rw.seg[i];
- break;
- case BLKIF_OP_DISCARD:
- dst->u.discard.flag = src->u.discard.flag;
- dst->u.discard.id = src->u.discard.id;
- dst->u.discard.sector_number = src->u.discard.sector_number;
- dst->u.discard.nr_sectors = src->u.discard.nr_sectors;
- break;
- case BLKIF_OP_INDIRECT:
- dst->u.indirect.indirect_op = src->u.indirect.indirect_op;
- dst->u.indirect.nr_segments = src->u.indirect.nr_segments;
- dst->u.indirect.handle = src->u.indirect.handle;
- dst->u.indirect.id = src->u.indirect.id;
- dst->u.indirect.sector_number = src->u.indirect.sector_number;
- barrier();
- j = min(MAX_INDIRECT_PAGES, INDIRECT_PAGES(dst->u.indirect.nr_segments));
- for (i = 0; i < j; i++)
- dst->u.indirect.indirect_grefs[i] =
- src->u.indirect.indirect_grefs[i];
- break;
- default:
- /*
- * Don't know how to translate this op. Only get the
- * ID so failure can be reported to the frontend.
- */
- dst->u.other.id = src->u.other.id;
- break;
- }
-}
-
#endif /* __XEN_BLKIF__BACKEND__COMMON_H__ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-02 16:33:32 +0000