Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa...

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

diff --git a/include/linux/bio.h b/include/linux/bio.h
index f53568c5852ebabf04b1bdef94f6226696e73f94..2aa283ab062b215ddb37975d8e55193ecd502c5f 100644 (file)
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -173,6 +173,24 @@ struct bio {
 
 #define BIO_RW_SYNC    (BIO_RW_SYNCIO | BIO_RW_UNPLUG)
 
+#define bio_rw_flagged(bio, flag)      ((bio)->bi_rw & (1 << (flag)))
+
+/*
+ * Old defines, these should eventually be replaced by direct usage of
+ * bio_rw_flagged()
+ */
+#define bio_barrier(bio)       bio_rw_flagged(bio, BIO_RW_BARRIER)
+#define bio_sync(bio)          bio_rw_flagged(bio, BIO_RW_SYNCIO)
+#define bio_unplug(bio)                bio_rw_flagged(bio, BIO_RW_UNPLUG)
+#define bio_failfast_dev(bio)  bio_rw_flagged(bio, BIO_RW_FAILFAST_DEV)
+#define bio_failfast_transport(bio)    \
+               bio_rw_flagged(bio, BIO_RW_FAILFAST_TRANSPORT)
+#define bio_failfast_driver(bio)       \
+               bio_rw_flagged(bio, BIO_RW_FAILFAST_DRIVER)
+#define bio_rw_ahead(bio)      bio_rw_flagged(bio, BIO_RW_AHEAD)
+#define bio_rw_meta(bio)       bio_rw_flagged(bio, BIO_RW_META)
+#define bio_discard(bio)       bio_rw_flagged(bio, BIO_RW_DISCARD)
+
 /*
  * upper 16 bits of bi_rw define the io priority of this bio
  */
@@ -196,16 +214,6 @@ 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_barrier(bio)       ((bio)->bi_rw & (1 << BIO_RW_BARRIER))
-#define bio_sync(bio)          ((bio)->bi_rw & (1 << BIO_RW_SYNCIO))
-#define bio_unplug(bio)                ((bio)->bi_rw & (1 << BIO_RW_UNPLUG))
-#define bio_failfast_dev(bio)  ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_DEV))
-#define bio_failfast_transport(bio)    \
-       ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_TRANSPORT))
-#define bio_failfast_driver(bio) ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_DRIVER))
-#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_discard(bio)       ((bio)->bi_rw & (1 << BIO_RW_DISCARD))
 #define bio_empty_barrier(bio) (bio_barrier(bio) && !bio_has_data(bio) && !bio_discard(bio))
 
 static inline unsigned int bio_cur_sectors(struct bio *bio)
@@ -443,12 +451,13 @@ extern struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly;
 
 #ifdef CONFIG_HIGHMEM
 /*
- * remember to add offset! and never ever reenable interrupts between a
- * bvec_kmap_irq and bvec_kunmap_irq!!
+ * remember never ever reenable interrupts between a bvec_kmap_irq and
+ * bvec_kunmap_irq!
  *
  * This function MUST be inlined - it plays with the CPU interrupt flags.
  */
-static inline char *bvec_kmap_irq(struct bio_vec *bvec, unsigned long *flags)
+static __always_inline char *bvec_kmap_irq(struct bio_vec *bvec,
+               unsigned long *flags)
 {
        unsigned long addr;
 
@@ -464,7 +473,8 @@ static inline char *bvec_kmap_irq(struct bio_vec *bvec, unsigned long *flags)
        return (char *) addr + bvec->bv_offset;
 }
 
-static inline void bvec_kunmap_irq(char *buffer, unsigned long *flags)
+static __always_inline void bvec_kunmap_irq(char *buffer,
+               unsigned long *flags)
 {
        unsigned long ptr = (unsigned long) buffer & PAGE_MASK;