From: "Darrick J. Wong" <djwong@kernel.org>
To: Christoph Hellwig <hch@lst.de>
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: Re: [PATCH 22/30] iomap: switch iomap_swapfile_activate to use iomap_iter
Date: Tue, 10 Aug 2021 17:08:43 -0700 [thread overview]
Message-ID: <20210811000843.GR3601443@magnolia> (raw)
In-Reply-To: <20210809061244.1196573-23-hch@lst.de>
On Mon, Aug 09, 2021 at 08:12:36AM +0200, Christoph Hellwig wrote:
> Switch iomap_swapfile_activate to use iomap_iter.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Smooooooth
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
--D
> ---
> fs/iomap/swapfile.c | 38 ++++++++++++++++----------------------
> 1 file changed, 16 insertions(+), 22 deletions(-)
>
> diff --git a/fs/iomap/swapfile.c b/fs/iomap/swapfile.c
> index 6250ca6a1f851d..7069606eca85b2 100644
> --- a/fs/iomap/swapfile.c
> +++ b/fs/iomap/swapfile.c
> @@ -88,13 +88,9 @@ static int iomap_swapfile_fail(struct iomap_swapfile_info *isi, const char *str)
> * swap only cares about contiguous page-aligned physical extents and makes no
> * distinction between written and unwritten extents.
> */
> -static loff_t iomap_swapfile_activate_actor(struct inode *inode, loff_t pos,
> - loff_t count, void *data, struct iomap *iomap,
> - struct iomap *srcmap)
> +static loff_t iomap_swapfile_iter(const struct iomap_iter *iter,
> + struct iomap *iomap, struct iomap_swapfile_info *isi)
> {
> - struct iomap_swapfile_info *isi = data;
> - int error;
> -
> switch (iomap->type) {
> case IOMAP_MAPPED:
> case IOMAP_UNWRITTEN:
> @@ -125,12 +121,12 @@ static loff_t iomap_swapfile_activate_actor(struct inode *inode, loff_t pos,
> isi->iomap.length += iomap->length;
> } else {
> /* Otherwise, add the retained iomap and store this one. */
> - error = iomap_swapfile_add_extent(isi);
> + int error = iomap_swapfile_add_extent(isi);
> if (error)
> return error;
> memcpy(&isi->iomap, iomap, sizeof(isi->iomap));
> }
> - return count;
> + return iomap_length(iter);
> }
>
> /*
> @@ -141,16 +137,19 @@ int iomap_swapfile_activate(struct swap_info_struct *sis,
> struct file *swap_file, sector_t *pagespan,
> const struct iomap_ops *ops)
> {
> + struct inode *inode = swap_file->f_mapping->host;
> + struct iomap_iter iter = {
> + .inode = inode,
> + .pos = 0,
> + .len = ALIGN_DOWN(i_size_read(inode), PAGE_SIZE),
> + .flags = IOMAP_REPORT,
> + };
> struct iomap_swapfile_info isi = {
> .sis = sis,
> .lowest_ppage = (sector_t)-1ULL,
> .file = swap_file,
> };
> - struct address_space *mapping = swap_file->f_mapping;
> - struct inode *inode = mapping->host;
> - loff_t pos = 0;
> - loff_t len = ALIGN_DOWN(i_size_read(inode), PAGE_SIZE);
> - loff_t ret;
> + int ret;
>
> /*
> * Persist all file mapping metadata so that we won't have any
> @@ -160,15 +159,10 @@ int iomap_swapfile_activate(struct swap_info_struct *sis,
> if (ret)
> return ret;
>
> - while (len > 0) {
> - ret = iomap_apply(inode, pos, len, IOMAP_REPORT,
> - ops, &isi, iomap_swapfile_activate_actor);
> - if (ret <= 0)
> - return ret;
> -
> - pos += ret;
> - len -= ret;
> - }
> + while ((ret = iomap_iter(&iter, ops)) > 0)
> + iter.processed = iomap_swapfile_iter(&iter, &iter.iomap, &isi);
> + if (ret < 0)
> + return ret;
>
> if (isi.iomap.length) {
> ret = iomap_swapfile_add_extent(&isi);
> --
> 2.30.2
>
next prev parent reply other threads:[~2021-08-11 0:08 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-09 6:12 switch iomap to an iterator model v2 Christoph Hellwig
2021-08-09 6:12 ` [PATCH 01/30] iomap: fix a trivial comment typo in trace.h Christoph Hellwig
2021-08-09 6:12 ` [PATCH 02/30] iomap: remove the iomap arguments to ->page_{prepare,done} Christoph Hellwig
2021-08-09 6:12 ` [PATCH 03/30] iomap: mark the iomap argument to iomap_sector const Christoph Hellwig
2021-08-09 6:12 ` [PATCH 04/30] iomap: mark the iomap argument to iomap_inline_data const Christoph Hellwig
2021-08-09 16:17 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 05/30] iomap: mark the iomap argument to iomap_inline_data_valid const Christoph Hellwig
2021-08-09 16:17 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 06/30] fs: mark the iomap argument to __block_write_begin_int const Christoph Hellwig
2021-08-09 6:12 ` [PATCH 07/30] fsdax: mark the iomap argument to dax_iomap_sector as const Christoph Hellwig
2021-08-19 20:35 ` Dan Williams
2021-08-09 6:12 ` [PATCH 08/30] iomap: mark the iomap argument to iomap_read_inline_data const Christoph Hellwig
2021-08-09 6:12 ` [PATCH 09/30] iomap: mark the iomap argument to iomap_read_page_sync const Christoph Hellwig
2021-08-09 6:12 ` [PATCH 10/30] iomap: fix the iomap_readpage_actor return value for inline data Christoph Hellwig
2021-08-10 23:31 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 11/30] iomap: add the new iomap_iter model Christoph Hellwig
2021-08-09 22:10 ` Dave Chinner
2021-08-10 6:45 ` Darrick J. Wong
2021-08-10 7:13 ` Christoph Hellwig
2021-08-11 0:31 ` Darrick J. Wong
2021-08-11 5:38 ` Christoph Hellwig
2021-08-11 19:17 ` Darrick J. Wong
2021-08-12 6:49 ` Christoph Hellwig
2021-08-12 18:20 ` Darrick J. Wong
2021-08-13 7:29 ` Christoph Hellwig
2021-08-11 19:17 ` [PATCH v2.1 " Darrick J. Wong
2021-08-17 2:34 ` Dave Chinner
2021-08-19 21:25 ` [PATCH " Dan Williams
2021-08-20 4:11 ` Christoph Hellwig
2021-08-20 15:27 ` Dan Williams
2021-08-09 6:12 ` [PATCH 12/30] iomap: switch readahead and readpage to use iomap_iter Christoph Hellwig
2021-08-10 23:46 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 13/30] iomap: switch iomap_file_buffered_write " Christoph Hellwig
2021-08-10 23:53 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 14/30] iomap: switch iomap_file_unshare " Christoph Hellwig
2021-08-10 23:54 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 15/30] iomap: switch iomap_zero_range " Christoph Hellwig
2021-08-10 23:54 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 16/30] iomap: switch iomap_page_mkwrite " Christoph Hellwig
2021-08-10 23:58 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 17/30] iomap: switch __iomap_dio_rw " Christoph Hellwig
2021-08-11 0:17 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 18/30] iomap: switch iomap_fiemap " Christoph Hellwig
2021-08-11 0:05 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 19/30] iomap: switch iomap_bmap " Christoph Hellwig
2021-08-10 6:39 ` Darrick J. Wong
2021-08-10 7:13 ` Christoph Hellwig
2021-08-11 19:18 ` [PATCH v2.1 " Darrick J. Wong
2021-08-12 6:50 ` Christoph Hellwig
2021-08-17 2:35 ` Dave Chinner
2021-08-09 6:12 ` [PATCH 20/30] iomap: switch iomap_seek_hole " Christoph Hellwig
2021-08-11 0:13 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 21/30] iomap: switch iomap_seek_data " Christoph Hellwig
2021-08-11 0:12 ` Darrick J. Wong
2021-08-09 6:12 ` [PATCH 22/30] iomap: switch iomap_swapfile_activate " Christoph Hellwig
2021-08-11 0:08 ` Darrick J. Wong [this message]
2021-08-09 6:12 ` [PATCH 23/30] fsdax: switch dax_iomap_rw " Christoph Hellwig
2021-08-11 0:07 ` Darrick J. Wong
2021-08-19 21:55 ` Dan Williams
2021-08-09 6:12 ` [PATCH 24/30] iomap: remove iomap_apply Christoph Hellwig
2021-08-11 19:18 ` [PATCH v2.1 " Darrick J. Wong
2021-08-17 2:36 ` Dave Chinner
2021-08-09 6:12 ` [PATCH 25/30] iomap: pass an iomap_iter to various buffered I/O helpers Christoph Hellwig
2021-08-09 6:12 ` [PATCH 26/30] iomap: rework unshare flag Christoph Hellwig
2021-08-09 6:12 ` [PATCH 27/30] fsdax: factor out helpers to simplify the dax fault code Christoph Hellwig
2021-08-09 6:12 ` [PATCH 28/30] fsdax: factor out a dax_fault_actor() helper Christoph Hellwig
2021-08-09 6:12 ` [PATCH 29/30] fsdax: switch the fault handlers to use iomap_iter Christoph Hellwig
2021-08-09 6:12 ` [PATCH 30/30] iomap: constify iomap_iter_srcmap Christoph Hellwig
2021-08-11 19:19 ` [PATCH 31/30] iomap: move iomap iteration code to iter.c Darrick J. Wong
2021-08-17 2:37 ` Dave Chinner
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