linux-fsdevel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Christoph Hellwig <hch@lst.de>
To: linux-xfs@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 13/13] xfs: use iomap for blocksize == PAGE_SIZE readpage and readpages
Date: Wed, 30 May 2018 11:58:13 +0200	[thread overview]
Message-ID: <20180530095813.31245-14-hch@lst.de> (raw)
In-Reply-To: <20180530095813.31245-1-hch@lst.de>

For file systems with a block size that equals the page size we never do
partial reads, so we can use the buffer_head-less iomap versions of
readpage and readpages without conflicting with the buffer_head structures
create later in write_begin.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/xfs_aops.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 56e405572909..c631c457b444 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -1402,6 +1402,8 @@ xfs_vm_readpage(
 	struct page		*page)
 {
 	trace_xfs_vm_readpage(page->mapping->host, 1);
+	if (i_blocksize(page->mapping->host) == PAGE_SIZE)
+		return iomap_readpage(page, &xfs_iomap_ops);
 	return mpage_readpage(page, xfs_get_blocks);
 }
 
@@ -1413,6 +1415,8 @@ xfs_vm_readpages(
 	unsigned		nr_pages)
 {
 	trace_xfs_vm_readpages(mapping->host, nr_pages);
+	if (i_blocksize(mapping->host) == PAGE_SIZE)
+		return iomap_readpages(mapping, pages, nr_pages, &xfs_iomap_ops);
 	return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks);
 }
 
-- 
2.17.0

  parent reply	other threads:[~2018-05-30  9:58 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-30  9:58 iomap based buffered reads & iomap cleanups v4 Christoph Hellwig
2018-05-30  9:58 ` [PATCH 01/13] block: add a lower-level bio_add_page interface Christoph Hellwig
2018-05-30 10:12   ` Ming Lei
2018-05-30  9:58 ` [PATCH 02/13] mm: give the 'ret' variable a better name __do_page_cache_readahead Christoph Hellwig
2018-05-30 23:01   ` Dave Chinner
2018-05-30  9:58 ` [PATCH 03/13] mm: return an unsigned int from __do_page_cache_readahead Christoph Hellwig
2018-05-30 23:02   ` Dave Chinner
2018-05-30  9:58 ` [PATCH 04/13] mm: split ->readpages calls to avoid non-contiguous pages lists Christoph Hellwig
2018-05-30 23:02   ` Dave Chinner
2018-05-30  9:58 ` [PATCH 05/13] iomap: inline data should be an iomap type, not a flag Christoph Hellwig
2018-05-30 23:05   ` Dave Chinner
2018-05-30  9:58 ` [PATCH 06/13] iomap: fix the comment describing IOMAP_NOWAIT Christoph Hellwig
2018-05-30 23:05   ` Dave Chinner
2018-05-30  9:58 ` [PATCH 07/13] iomap: move IOMAP_F_BOUNDARY to gfs2 Christoph Hellwig
2018-05-30 23:08   ` Dave Chinner
2018-05-30  9:58 ` [PATCH 08/13] iomap: use __bio_add_page in iomap_dio_zero Christoph Hellwig
2018-05-30 23:09   ` Dave Chinner
2018-05-30  9:58 ` [PATCH 09/13] iomap: add a iomap_sector helper Christoph Hellwig
2018-05-30 23:10   ` Dave Chinner
2018-05-30  9:58 ` [PATCH 10/13] iomap: add an iomap-based bmap implementation Christoph Hellwig
2018-05-30 23:11   ` Dave Chinner
2018-05-31  6:07     ` Christoph Hellwig
2018-05-30  9:58 ` [PATCH 11/13] iomap: add an iomap-based readpage and readpages implementation Christoph Hellwig
2018-05-30 16:22   ` Darrick J. Wong
2018-05-30 23:45   ` Dave Chinner
2018-05-31  6:13     ` Christoph Hellwig
2018-05-31 11:59       ` Dave Chinner
2018-05-30  9:58 ` [PATCH 12/13] xfs: use iomap_bmap Christoph Hellwig
2018-05-30 23:46   ` Dave Chinner
2018-05-30  9:58 ` Christoph Hellwig [this message]
2018-05-30 23:47   ` [PATCH 13/13] xfs: use iomap for blocksize == PAGE_SIZE readpage and readpages Dave Chinner
2018-05-31 18:06 iomap based buffered reads & iomap cleanups v5 Christoph Hellwig
2018-05-31 18:06 ` [PATCH 13/13] xfs: use iomap for blocksize == PAGE_SIZE readpage and readpages Christoph Hellwig

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180530095813.31245-14-hch@lst.de \
    --to=hch@lst.de \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-xfs@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).