From: Dave Kleikamp <dave.kleikamp@oracle.com>
To: Zach Brown <zab@zabbo.net>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Dave Kleikamp <dave.kleikamp@oracle.com>
Subject: [PATCH V7 -next 16/33] bio: add bvec_length(), like iov_length()
Date: Fri, 8 Mar 2013 16:52:11 -0600 [thread overview]
Message-ID: <1362783148-22736-17-git-send-email-dave.kleikamp@oracle.com> (raw)
In-Reply-To: <1362783148-22736-1-git-send-email-dave.kleikamp@oracle.com>
From: Zach Brown <zab@zabbo.net>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: Zach Brown <zab@zabbo.net>
---
include/linux/bio.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 5f5491767..d670bee 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -311,6 +311,14 @@ extern struct bio_vec *bvec_alloc_bs(gfp_t, int, unsigned long *, struct bio_set
extern void bvec_free_bs(struct bio_set *, struct bio_vec *, unsigned int);
extern unsigned int bvec_nr_vecs(unsigned short idx);
+static inline ssize_t bvec_length(const struct bio_vec *bvec, unsigned long nr)
+{
+ ssize_t bytes = 0;
+ while (nr--)
+ bytes += (bvec++)->bv_len;
+ return bytes;
+}
+
#ifdef CONFIG_BLK_CGROUP
int bio_associate_current(struct bio *bio);
void bio_disassociate_task(struct bio *bio);
--
1.8.1.5
next prev parent reply other threads:[~2013-03-08 22:52 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-08 22:51 [PATCH V7 -next 00/33] loop: Issue O_DIRECT aio using bio_vec Dave Kleikamp
2013-03-08 22:51 ` [PATCH V7 -next 01/33] iov_iter: move into its own file Dave Kleikamp
2013-03-08 22:51 ` [PATCH V7 -next 02/33] iov_iter: iov_iter_copy_from_user() should use non-atomic copy Dave Kleikamp
2013-03-08 22:51 ` [PATCH V7 -next 03/33] iov_iter: add copy_to_user support Dave Kleikamp
2013-03-08 22:51 ` [PATCH V7 -next 04/33] iov_iter: add __iovec_copy_to_user() Dave Kleikamp
[not found] ` <1362783148-22736-1-git-send-email-dave.kleikamp-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2013-03-08 22:52 ` [PATCH V7 -next 05/33] fuse: convert fuse to use iov_iter_copy_[to|from]_user Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 06/33] iov_iter: hide iovec details behind ops function pointers Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 07/33] iov_iter: ii_iovec_copy_to_user should pre-fault user pages Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 08/33] iov_iter: add bvec support Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 09/33] iov_iter: add a shorten call Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 10/33] iov_iter: let callers extract iovecs and bio_vecs Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 11/33] dio: Convert direct_IO to use iov_iter Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 12/33] dio: add bio_vec support to __blockdev_direct_IO() Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 13/33] fs: pull iov_iter use higher up the stack Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 14/33] aio: add aio_kernel_() interface Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 15/33] aio: add aio support for iov_iter arguments Dave Kleikamp
2013-03-08 22:52 ` Dave Kleikamp [this message]
2013-03-08 22:52 ` [PATCH V7 -next 17/33] loop: use aio to perform io on the underlying file Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 18/33] fs: create file_readable() and file_writable() functions Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 19/33] fs: use read_iter and write_iter rather than aio_read and aio_write Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 20/33] fs: add read_iter and write_iter to several file systems Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 21/33] ocfs2: add support for read_iter, write_iter, and direct_IO_bvec Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 22/33] ext4: add support for read_iter and write_iter Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 23/33] nfs: add support for read_iter, write_iter Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 24/33] nfs: simplify swap Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 25/33] btrfs: add support for read_iter and write_iter Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 26/33] block_dev: add support for read_iter, write_iter Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 27/33] xfs: add support for read_iter and write_iter Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 28/33] gfs2: Convert aio_read/write ops to read/write_iter Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 29/33] udf: convert file ops from aio_read/write " Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 30/33] afs: add support for read_iter and write_iter Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 31/33] ecrpytfs: Convert aio_read/write ops to read/write_iter Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 32/33] ubifs: convert file ops from aio_read/write " Dave Kleikamp
2013-03-08 22:52 ` [PATCH V7 -next 33/33] tmpfs: add support for read_iter and write_iter Dave Kleikamp
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