From: Dave Kleikamp <dave.kleikamp@oracle.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Zach Brown <zab@zabbo.net>,
"Maxim V. Patlasov" <mpatlasov@parallels.com>,
Dave Kleikamp <dave.kleikamp@oracle.com>
Subject: [PATCH V6 14/30] bio: add bvec_length(), like iov_length()
Date: Tue, 29 Jan 2013 10:23:27 -0600 [thread overview]
Message-ID: <1359476623-10544-15-git-send-email-dave.kleikamp@oracle.com> (raw)
In-Reply-To: <1359476623-10544-1-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 820e7aa..f5f9829 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -290,6 +290,14 @@ 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);
--
1.8.1.1
next prev parent reply other threads:[~2013-01-29 16:24 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-29 16:23 [PATCH V6 00/30] loop: Issue O_DIRECT aio using bio_vec Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 01/30] iov_iter: move into its own file Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 02/30] iov_iter: iov_iter_copy_from_user() should use non-atomic copy Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 03/30] iov_iter: add copy_to_user support Dave Kleikamp
[not found] ` <1359476623-10544-1-git-send-email-dave.kleikamp-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2013-01-29 16:23 ` [PATCH V6 04/30] fuse: convert fuse to use iov_iter_copy_[to|from]_user Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 05/30] iov_iter: hide iovec details behind ops function pointers Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 06/30] iov_iter: add bvec support Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 07/30] iov_iter: add a shorten call Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 08/30] iov_iter: let callers extract iovecs and bio_vecs Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 09/30] dio: Convert direct_IO to use iov_iter Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 10/30] dio: add bio_vec support to __blockdev_direct_IO() Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 11/30] fs: pull iov_iter use higher up the stack Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 12/30] aio: add aio_kernel_() interface Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 13/30] aio: add aio support for iov_iter arguments Dave Kleikamp
2013-01-29 16:23 ` Dave Kleikamp [this message]
2013-01-29 16:23 ` [PATCH V6 15/30] loop: use aio to perform io on the underlying file Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 16/30] fs: create file_readable() and file_writable() functions Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 17/30] fs: use read_iter and write_iter rather than aio_read and aio_write Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 18/30] fs: add read_iter and write_iter to several file systems Dave Kleikamp
2013-02-01 7:51 ` Artem Bityutskiy
2013-02-01 20:40 ` Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 19/30] ocfs2: add support for read_iter, write_iter, and direct_IO_bvec Dave Kleikamp
2013-01-30 0:59 ` Joel Becker
2013-01-29 16:23 ` [PATCH V6 20/30] ext4: add support for read_iter and write_iter Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 21/30] nfs: add support for read_iter, write_iter Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 22/30] nfs: simplify swap Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 23/30] btrfs: add support for read_iter and write_iter Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 24/30] block_dev: add support for read_iter, write_iter Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 25/30] xfs: add support for read_iter and write_iter Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 26/30] gfs2: Convert aio_read/write ops to read/write_iter Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 27/30] udf: convert file ops from aio_read/write " Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 28/30] afs: add support for read_iter and write_iter Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 29/30] ecrpytfs: Convert aio_read/write ops to read/write_iter Dave Kleikamp
2013-01-29 16:23 ` [PATCH V6 30/30] ubifs: convert file ops from aio_read/write " Dave Kleikamp
2013-01-29 18:42 ` [PATCH V6 00/30] loop: Issue O_DIRECT aio using bio_vec Jeff Moyer
2013-01-29 18:45 ` Dave Kleikamp
2013-01-30 3:22 ` Dave Kleikamp
2013-01-30 19:23 ` Jeff Moyer
2013-01-30 19:26 ` Dave Kleikamp
2013-02-18 21:42 ` Sedat Dilek
2013-02-18 22:14 ` Dave Kleikamp
2013-01-29 23:38 ` [PATCH V6 18/30] fs: add read_iter and write_iter to several file systems Dave Kleikamp
2013-01-30 0:52 ` Dave Kleikamp
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