mn10300: use kbuild.h instead of defining macros in asm-offsets.c

[linux-2.6-omap-h63xx.git] / include / linux / bio.h

diff --git a/include/linux/bio.h b/include/linux/bio.h
index 1ddef34f43c37c3a4153e080fa1c97757fe1ab08..d259690863fb0494a5d1ceeb580f30d0ac793eef 100644 (file)
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -64,7 +64,7 @@ struct bio_vec {
 
 struct bio_set;
 struct bio;
-typedef int (bio_end_io_t) (struct bio *, unsigned int, int);
+typedef void (bio_end_io_t) (struct bio *, int);
 typedef void (bio_destructor_t) (struct bio *);
 
 /*
@@ -176,13 +176,28 @@ struct bio {
 #define bio_offset(bio)                bio_iovec((bio))->bv_offset
 #define bio_segments(bio)      ((bio)->bi_vcnt - (bio)->bi_idx)
 #define bio_sectors(bio)       ((bio)->bi_size >> 9)
-#define bio_cur_sectors(bio)   (bio_iovec(bio)->bv_len >> 9)
-#define bio_data(bio)          (page_address(bio_page((bio))) + bio_offset((bio)))
 #define bio_barrier(bio)       ((bio)->bi_rw & (1 << BIO_RW_BARRIER))
 #define bio_sync(bio)          ((bio)->bi_rw & (1 << BIO_RW_SYNC))
 #define bio_failfast(bio)      ((bio)->bi_rw & (1 << BIO_RW_FAILFAST))
 #define bio_rw_ahead(bio)      ((bio)->bi_rw & (1 << BIO_RW_AHEAD))
 #define bio_rw_meta(bio)       ((bio)->bi_rw & (1 << BIO_RW_META))
+#define bio_empty_barrier(bio) (bio_barrier(bio) && !(bio)->bi_size)
+
+static inline unsigned int bio_cur_sectors(struct bio *bio)
+{
+       if (bio->bi_vcnt)
+               return bio_iovec(bio)->bv_len >> 9;
+
+       return 0;
+}
+
+static inline void *bio_data(struct bio *bio)
+{
+       if (bio->bi_vcnt)
+               return page_address(bio_page(bio)) + bio_offset(bio);
+
+       return NULL;
+}
 
 /*
  * will die
@@ -226,7 +241,7 @@ struct bio {
 #define BIO_SEG_BOUNDARY(q, b1, b2) \
        BIOVEC_SEG_BOUNDARY((q), __BVEC_END((b1)), __BVEC_START((b2)))
 
-#define bio_io_error(bio, bytes) bio_endio((bio), (bytes), -EIO)
+#define bio_io_error(bio) bio_endio((bio), -EIO)
 
 /*
  * drivers should not use the __ version unless they _really_ want to
@@ -286,7 +301,7 @@ extern struct bio *bio_alloc_bioset(gfp_t, int, struct bio_set *);
 extern void bio_put(struct bio *);
 extern void bio_free(struct bio *, struct bio_set *);
 
-extern void bio_endio(struct bio *, unsigned int, int);
+extern void bio_endio(struct bio *, int);
 struct request_queue;
 extern int bio_phys_segments(struct request_queue *, struct bio *);
 extern int bio_hw_segments(struct request_queue *, struct bio *);
@@ -311,8 +326,9 @@ extern struct bio *bio_map_kern(struct request_queue *, void *, unsigned int,
                                gfp_t);
 extern void bio_set_pages_dirty(struct bio *bio);
 extern void bio_check_pages_dirty(struct bio *bio);
-extern void bio_release_pages(struct bio *bio);
 extern struct bio *bio_copy_user(struct request_queue *, unsigned long, unsigned int, int);
+extern struct bio *bio_copy_user_iov(struct request_queue *, struct sg_iovec *,
+                                    int, int);
 extern int bio_uncopy_user(struct bio *);
 void zero_fill_bio(struct bio *bio);