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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-17 20:29:55 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-17 20:29:55 +0400
commitc53dbf54863e7f3b0b8810dda2bdd0290006bdac (patch)
treef783074f1bec1112bf1148a077e0114a38403ad4 /include/linux/bio.h
parentb73b636e8987f8728c6c700377615757691b9a55 (diff)
parentf73e2d13a16cc88c4faa4729967f92bfeec8a142 (diff)
downloadlinux-c53dbf54863e7f3b0b8810dda2bdd0290006bdac.tar.xz
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: remove __generic_unplug_device() from exports block: move q->unplug_work initialization blktrace: pass zfcp driver data blktrace: add support for driver data block: fix current kernel-doc warnings block: only call ->request_fn when the queue is not stopped block: simplify string handling in elv_iosched_store() block: fix kernel-doc for blk_alloc_devt() block: fix nr_phys_segments miscalculation bug block: add partition attribute for partition number block: add BIG FAT WARNING to CONFIG_DEBUG_BLOCK_EXT_DEVT softirq: Add support for triggering softirq work on softirqs.
Diffstat (limited to 'include/linux/bio.h')
-rw-r--r--include/linux/bio.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 1beda208cbfb..1c91a176b9ae 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -79,6 +79,13 @@ struct bio {
unsigned int bi_size; /* residual I/O count */
+ /*
+ * To keep track of the max segment size, we account for the
+ * sizes of the first and last mergeable segments in this bio.
+ */
+ unsigned int bi_seg_front_size;
+ unsigned int bi_seg_back_size;
+
unsigned int bi_max_vecs; /* max bvl_vecs we can hold */
unsigned int bi_comp_cpu; /* completion CPU */