From: Dave Kleikamp <dave.kleikamp@oracle.com>
To: linux-fsdevel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Zach Brown <zab@zabbo.net>,
"Maxim V. Patlasov" <mpatlasov@parallels.com>,
Dave Kleikamp <dave.kleikamp@oracle.com>
Subject: [PATCH V5 14/30] bio: add bvec_length(), like iov_length()
Date: Wed, 9 Jan 2013 13:58:29 -0600 [thread overview]
Message-ID: <1357761525-22718-15-git-send-email-dave.kleikamp@oracle.com> (raw)
In-Reply-To: <1357761525-22718-1-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
next prev parent reply other threads:[~2013-01-09 19:58 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-09 19:58 [PATCH V5 00/30] loop: Issue O_DIRECT aio using bio_vec Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 01/30] iov_iter: move into its own file Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 02/30] iov_iter: iov_iter_copy_from_user() should use non-atomic copy Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 03/30] iov_iter: add copy_to_user support Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 05/30] iov_iter: hide iovec details behind ops function pointers Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 06/30] iov_iter: add bvec support Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 07/30] iov_iter: add a shorten call Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 08/30] iov_iter: let callers extract iovecs and bio_vecs Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 09/30] dio: Convert direct_IO to use iov_iter Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 10/30] dio: add bio_vec support to __blockdev_direct_IO() Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 11/30] fs: pull iov_iter use higher up the stack Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 12/30] aio: add aio_kernel_() interface Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 13/30] aio: add aio support for iov_iter arguments Dave Kleikamp
2013-01-09 19:58 ` Dave Kleikamp [this message]
2013-01-09 19:58 ` [PATCH V5 15/30] loop: use aio to perform io on the underlying file Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 16/30] fs: create file_readable() and file_writable() functions Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 17/30] fs: use read_iter and write_iter rather than aio_read and aio_write Dave Kleikamp
2013-01-18 21:26 ` Jeff Moyer
2013-01-18 22:03 ` Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 18/30] fs: add read_iter and write_iter to several file systems Dave Kleikamp
2013-01-10 12:40 ` Boaz Harrosh
2013-01-09 19:58 ` [PATCH V5 19/30] ocfs2: add support for read_iter, write_iter, and direct_IO_bvec Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 20/30] ext4: add support for read_iter and write_iter Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 21/30] nfs: add support for read_iter, write_iter Dave Kleikamp
[not found] ` <1357761525-22718-1-git-send-email-dave.kleikamp-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2013-01-09 19:58 ` [PATCH V5 04/30] fuse: convert fuse to use iov_iter_copy_[to|from]_user Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 22/30] nfs: simplify swap Dave Kleikamp
2013-01-09 20:01 ` Rik van Riel
2013-01-09 19:58 ` [PATCH V5 23/30] btrfs: add support for read_iter and write_iter Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 24/30] block_dev: add support for read_iter, write_iter Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 25/30] xfs: add support for read_iter and write_iter Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 26/30] gfs2: Convert aio_read/write ops to read/write_iter Dave Kleikamp
2013-01-10 10:10 ` Steven Whitehouse
2013-01-10 14:34 ` Dave Kleikamp
2013-01-11 16:24 ` Steven Whitehouse
2013-01-09 19:58 ` [PATCH V5 27/30] udf: convert file ops from aio_read/write " Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 28/30] afs: add support for read_iter and write_iter Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 29/30] ecrpytfs: Convert aio_read/write ops to read/write_iter Dave Kleikamp
2013-01-09 19:58 ` [PATCH V5 30/30] ubifs: convert file ops from aio_read/write " Dave Kleikamp
2013-01-10 15:46 ` [PATCH V5 00/30] loop: Issue O_DIRECT aio using bio_vec Sedat Dilek
2013-01-11 21:51 ` Dave Kleikamp
2013-01-12 10:52 ` Sedat Dilek
2013-01-12 12:54 ` Sedat Dilek
2013-01-16 16:32 ` James Bottomley
2013-01-16 18:25 ` Sedat Dilek
2013-01-17 23:49 ` James Bottomley
2013-01-18 17:16 ` Jeff Moyer
2013-01-18 17:56 ` Jeff Moyer
2013-01-18 17:58 ` Dave Kleikamp
2013-01-18 21:48 ` Jeff Moyer
2013-01-18 22:33 ` Dave Kleikamp
2013-01-22 16:14 ` Jeff Moyer
2013-01-20 22:26 ` Dave Chinner
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