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yaml --- r: 110442 b: refs/heads/master c: 7a67f63 h: refs/heads/master v: v3
git-mirror · Oct 9, 2008 · dc760c6 · dc760c6
1 parent 13b65b0
commit dc760c6
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 35e396cd100489dfe8f5a76e3613fb8049ffdff3
+refs/heads/master: 7a67f63b3233ff28e753854fe27891c44f8588ae
diff --git a/trunk/include/linux/bio.h b/trunk/include/linux/bio.h
@@ -445,6 +445,14 @@ static inline char *__bio_kmap_irq(struct bio *bio, unsigned short idx,
 	__bio_kmap_irq((bio), (bio)->bi_idx, (flags))
 #define bio_kunmap_irq(buf,flags)	__bio_kunmap_irq(buf, flags)
 
+/*
+ * Check whether this bio carries any data or not. A NULL bio is allowed.
+ */
+static inline int bio_has_data(struct bio *bio)
+{
+	return bio && bio->bi_io_vec != NULL;
+}
+
 #if defined(CONFIG_BLK_DEV_INTEGRITY)
 
 #define bip_vec_idx(bip, idx)	(&(bip->bip_vec[(idx)]))