From: Christoph Hellwig <hch@lst.de>
To: "Darrick J. Wong" <djwong@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>,
Matthew Wilcox <willy@infradead.org>,
Andreas Gruenbacher <agruenba@redhat.com>,
Shiyang Ruan <ruansy.fnst@fujitsu.com>,
linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-btrfs@vger.kernel.org, nvdimm@lists.linux.dev,
cluster-devel@redhat.com
Subject: [PATCH 10/27] iomap: switch iomap_file_buffered_write to use iomap_iter
Date: Mon, 19 Jul 2021 12:35:03 +0200 [thread overview]
Message-ID: <20210719103520.495450-11-hch@lst.de> (raw)
In-Reply-To: <20210719103520.495450-1-hch@lst.de>
Switch iomap_file_buffered_write to use iomap_iter.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/iomap/buffered-io.c | 49 +++++++++++++++++++++---------------------
1 file changed, 25 insertions(+), 24 deletions(-)
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 3b18cafa72bec6..7195e82d15775e 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -715,13 +715,14 @@ static size_t iomap_write_end(struct inode *inode, loff_t pos, size_t len,
return ret;
}
-static loff_t
-iomap_write_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
- struct iomap *iomap, struct iomap *srcmap)
+static loff_t iomap_write_iter(struct iomap_iter *iter, struct iov_iter *i)
{
- struct iov_iter *i = data;
- long status = 0;
+ struct iomap *srcmap = iomap_iter_srcmap(iter);
+ struct iomap *iomap = &iter->iomap;
+ loff_t length = iomap_length(iter);
+ loff_t pos = iter->pos;
ssize_t written = 0;
+ long status = 0;
do {
struct page *page;
@@ -747,18 +748,18 @@ iomap_write_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
break;
}
- status = iomap_write_begin(inode, pos, bytes, 0, &page, iomap,
- srcmap);
+ status = iomap_write_begin(iter->inode, pos, bytes, 0, &page,
+ iomap, srcmap);
if (unlikely(status))
break;
- if (mapping_writably_mapped(inode->i_mapping))
+ if (mapping_writably_mapped(iter->inode->i_mapping))
flush_dcache_page(page);
copied = copy_page_from_iter_atomic(page, offset, bytes, i);
- status = iomap_write_end(inode, pos, bytes, copied, page, iomap,
- srcmap);
+ status = iomap_write_end(iter->inode, pos, bytes, copied, page,
+ iomap, srcmap);
if (unlikely(copied != status))
iov_iter_revert(i, copied - status);
@@ -779,29 +780,29 @@ iomap_write_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
written += status;
length -= status;
- balance_dirty_pages_ratelimited(inode->i_mapping);
+ balance_dirty_pages_ratelimited(iter->inode->i_mapping);
} while (iov_iter_count(i) && length);
return written ? written : status;
}
ssize_t
-iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *iter,
+iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *i,
const struct iomap_ops *ops)
{
- struct inode *inode = iocb->ki_filp->f_mapping->host;
- loff_t pos = iocb->ki_pos, ret = 0, written = 0;
-
- while (iov_iter_count(iter)) {
- ret = iomap_apply(inode, pos, iov_iter_count(iter),
- IOMAP_WRITE, ops, iter, iomap_write_actor);
- if (ret <= 0)
- break;
- pos += ret;
- written += ret;
- }
+ struct iomap_iter iter = {
+ .inode = iocb->ki_filp->f_mapping->host,
+ .pos = iocb->ki_pos,
+ .len = iov_iter_count(i),
+ .flags = IOMAP_WRITE,
+ };
+ int ret;
- return written ? written : ret;
+ while ((ret = iomap_iter(&iter, ops)) > 0)
+ iter.processed = iomap_write_iter(&iter, i);
+ if (iter.pos == iocb->ki_pos)
+ return ret;
+ return iter.pos - iocb->ki_pos;
}
EXPORT_SYMBOL_GPL(iomap_file_buffered_write);
--
2.30.2
next prev parent reply other threads:[~2021-07-19 10:50 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-19 10:34 RFC: switch iomap to an iterator model Christoph Hellwig
2021-07-19 10:34 ` [PATCH 01/27] iomap: fix a trivial comment typo in trace.h Christoph Hellwig
2021-07-19 16:00 ` Darrick J. Wong
2021-07-19 10:34 ` [PATCH 02/27] iomap: remove the iomap arguments to ->page_{prepare,done} Christoph Hellwig
2021-07-19 16:04 ` Darrick J. Wong
2021-07-19 10:34 ` [PATCH 03/27] iomap: mark the iomap argument to iomap_sector const Christoph Hellwig
2021-07-19 16:08 ` Darrick J. Wong
2021-07-20 9:52 ` Nikolay Borisov
2021-07-26 8:12 ` Christoph Hellwig
2021-07-19 10:34 ` [PATCH 04/27] fs: mark the iomap argument to __block_write_begin_int const Christoph Hellwig
2021-07-19 17:35 ` Darrick J. Wong
2021-07-19 10:34 ` [PATCH 05/27] fsdax: mark the iomap argument to dax_iomap_sector as const Christoph Hellwig
2021-07-19 17:35 ` Darrick J. Wong
2021-07-19 10:34 ` [PATCH 06/27] iomap: mark the iomap argument to iomap_read_inline_data const Christoph Hellwig
2021-07-19 17:35 ` Darrick J. Wong
2021-07-19 10:35 ` [PATCH 07/27] iomap: mark the iomap argument to iomap_read_page_sync const Christoph Hellwig
2021-07-19 17:35 ` Darrick J. Wong
2021-07-19 10:35 ` [PATCH 08/27] iomap: add the new iomap_iter model Christoph Hellwig
2021-07-19 16:56 ` Darrick J. Wong
2021-07-26 8:15 ` Christoph Hellwig
2021-07-19 21:48 ` Dave Chinner
2021-07-26 8:17 ` Christoph Hellwig
2021-07-19 10:35 ` [PATCH 09/27] iomap: switch readahead and readpage to use iomap_iter Christoph Hellwig
2021-07-19 10:35 ` Christoph Hellwig [this message]
2021-07-19 10:35 ` [PATCH 11/27] iomap: switch iomap_file_unshare " Christoph Hellwig
2021-07-19 10:35 ` [PATCH 12/27] iomap: switch iomap_zero_range " Christoph Hellwig
2021-07-19 10:35 ` [PATCH 13/27] iomap: switch iomap_page_mkwrite " Christoph Hellwig
2021-07-19 10:35 ` [PATCH 14/27] iomap: switch __iomap_dio_rw " Christoph Hellwig
2021-07-19 10:35 ` [PATCH 15/27] iomap: switch iomap_fiemap " Christoph Hellwig
2021-07-19 10:35 ` [PATCH 16/27] iomap: switch iomap_bmap " Christoph Hellwig
2021-07-19 17:05 ` Darrick J. Wong
2021-07-26 8:19 ` Christoph Hellwig
2021-07-26 16:39 ` Darrick J. Wong
2021-07-27 6:31 ` Christoph Hellwig
2021-07-27 14:32 ` Darrick J. Wong
2021-07-19 10:35 ` [PATCH 17/27] iomap: switch iomap_seek_hole " Christoph Hellwig
2021-07-19 17:22 ` Darrick J. Wong
2021-07-26 8:22 ` Christoph Hellwig
2021-07-26 16:41 ` Darrick J. Wong
2021-07-19 10:35 ` [PATCH 18/27] iomap: switch iomap_seek_data " Christoph Hellwig
2021-07-19 10:35 ` [PATCH 19/27] iomap: switch iomap_swapfile_activate " Christoph Hellwig
2021-07-19 10:35 ` [PATCH 20/27] fsdax: switch dax_iomap_rw " Christoph Hellwig
2021-07-19 22:10 ` Dave Chinner
2021-07-26 8:25 ` Christoph Hellwig
2021-07-19 10:35 ` [PATCH 21/27] iomap: remove iomap_apply Christoph Hellwig
2021-07-19 17:48 ` Darrick J. Wong
2021-07-19 10:35 ` [PATCH 22/27] iomap: pass an iomap_iter to various buffered I/O helpers Christoph Hellwig
2021-07-19 17:48 ` Darrick J. Wong
2021-07-19 10:35 ` [PATCH 23/27] iomap: rework unshare flag Christoph Hellwig
2021-07-19 17:44 ` Darrick J. Wong
2021-07-19 10:35 ` [PATCH 24/27] fsdax: factor out helpers to simplify the dax fault code Christoph Hellwig
2021-07-19 10:35 ` [PATCH 25/27] fsdax: factor out a dax_fault_actor() helper Christoph Hellwig
2021-07-19 10:35 ` [PATCH 26/27] fsdax: switch the fault handlers to use iomap_iter Christoph Hellwig
2021-07-19 17:35 ` Darrick J. Wong
2021-07-19 10:35 ` [PATCH 27/27] iomap: constify iomap_iter_srcmap Christoph Hellwig
2021-07-19 17:44 ` Darrick J. Wong
2021-07-19 17:57 ` RFC: switch iomap to an iterator model Darrick J. Wong
2021-07-27 8:07 ` DAX setup pains, was " Christoph Hellwig
2021-07-29 20:33 ` Darrick J. Wong
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