From: Christoph Hellwig <hch@lst.de>
To: linux-xfs@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 11/18] xfs: don't clear imap_valid for a non-uptodate buffers
Date: Wed, 30 May 2018 12:00:06 +0200 [thread overview]
Message-ID: <20180530100013.31358-12-hch@lst.de> (raw)
In-Reply-To: <20180530100013.31358-1-hch@lst.de>
Finding a buffer that isn't uptodate doesn't invalidate the mapping for
any given block. The last_sector check will already take care of starting
another ioend as soon as we find any non-update buffer, and if the current
mapping doesn't include the next uptodate buffer the xfs_imap_valid check
will take care of it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_aops.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index cef2bc3cf98b..7dc13b0aae60 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -849,15 +849,12 @@ xfs_writepage_map(
break;
/*
- * Block does not contain valid data, skip it, mark the current
- * map as invalid because we have a discontiguity. This ensures
- * we put subsequent writeable buffers into a new ioend.
+ * Block does not contain valid data, skip it.
*/
if (!buffer_uptodate(bh)) {
if (PageUptodate(page))
ASSERT(buffer_mapped(bh));
uptodate = false;
- wpc->imap_valid = false;
continue;
}
--
2.17.0
next prev parent reply other threads:[~2018-05-30 10:00 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-30 9:59 buffered writes without buffer heads in xfs and iomap v4 Christoph Hellwig
2018-05-30 9:59 ` [PATCH 01/18] fs: factor out a __generic_write_end helper Christoph Hellwig
2018-05-30 13:34 ` Brian Foster
2018-05-30 16:26 ` Darrick J. Wong
2018-05-30 9:59 ` [PATCH 02/18] iomap: add initial support for writes without buffer heads Christoph Hellwig
2018-05-30 13:34 ` Brian Foster
2018-05-30 16:33 ` Darrick J. Wong
2018-05-30 9:59 ` [PATCH 03/18] xfs: simplify xfs_bmap_punch_delalloc_range Christoph Hellwig
2018-05-30 13:35 ` Brian Foster
2018-05-30 16:55 ` Darrick J. Wong
2018-05-30 9:59 ` [PATCH 04/18] xfs: simplify xfs_aops_discard_page Christoph Hellwig
2018-05-30 13:35 ` Brian Foster
2018-05-30 16:40 ` Darrick J. Wong
2018-05-30 10:00 ` [PATCH 05/18] xfs: move locking into xfs_bmap_punch_delalloc_range Christoph Hellwig
2018-05-30 13:35 ` Brian Foster
2018-05-30 16:58 ` Darrick J. Wong
2018-05-30 17:40 ` Brian Foster
2018-05-30 10:00 ` [PATCH 06/18] xfs: make xfs_writepage_map extent map centric Christoph Hellwig
2018-05-30 17:19 ` Darrick J. Wong
2018-05-30 17:39 ` Brian Foster
2018-05-31 16:11 ` Christoph Hellwig
2018-05-31 16:12 ` Christoph Hellwig
2018-05-30 10:00 ` [PATCH 07/18] xfs: remove the now unused XFS_BMAPI_IGSTATE flag Christoph Hellwig
2018-05-30 17:19 ` Darrick J. Wong
2018-05-31 13:46 ` Brian Foster
2018-05-31 16:11 ` Christoph Hellwig
2018-05-30 10:00 ` [PATCH 08/18] xfs: remove xfs_reflink_find_cow_mapping Christoph Hellwig
2018-05-30 17:23 ` Darrick J. Wong
2018-05-31 13:46 ` Brian Foster
2018-05-30 10:00 ` [PATCH 09/18] xfs: remove xfs_reflink_trim_irec_to_next_cow Christoph Hellwig
2018-05-30 17:27 ` Darrick J. Wong
2018-05-31 13:46 ` Brian Foster
2018-05-30 10:00 ` [PATCH 10/18] xfs: simplify xfs_map_blocks by using xfs_iext_lookup_extent directly Christoph Hellwig
2018-05-30 17:32 ` Darrick J. Wong
2018-05-31 13:46 ` Brian Foster
2018-05-30 10:00 ` Christoph Hellwig [this message]
2018-05-30 17:34 ` [PATCH 11/18] xfs: don't clear imap_valid for a non-uptodate buffers Darrick J. Wong
2018-05-31 13:46 ` Brian Foster
2018-05-30 10:00 ` [PATCH 12/18] xfs: remove the imap_valid flag Christoph Hellwig
2018-05-30 17:44 ` Darrick J. Wong
2018-05-31 13:47 ` Brian Foster
2018-05-30 10:00 ` [PATCH 13/18] xfs: don't look at buffer heads in xfs_add_to_ioend Christoph Hellwig
2018-05-30 17:55 ` Darrick J. Wong
2018-05-31 7:03 ` Christoph Hellwig
2018-05-31 13:49 ` Brian Foster
2018-05-30 10:00 ` [PATCH 14/18] xfs: move all writeback buffer_head manipulation into xfs_map_at_offset Christoph Hellwig
2018-05-30 17:56 ` Darrick J. Wong
2018-05-31 13:49 ` Brian Foster
2018-05-30 10:00 ` [PATCH 15/18] xfs: remove xfs_start_page_writeback Christoph Hellwig
2018-05-30 17:57 ` Darrick J. Wong
2018-05-31 13:49 ` Brian Foster
2018-05-30 10:00 ` [PATCH 16/18] xfs: refactor the tail of xfs_writepage_map Christoph Hellwig
2018-05-30 18:00 ` Darrick J. Wong
2018-05-31 13:49 ` Brian Foster
2018-05-30 10:00 ` [PATCH 17/18] xfs: do not set the page uptodate in xfs_writepage_map Christoph Hellwig
2018-05-30 18:08 ` Darrick J. Wong
2018-05-31 7:04 ` Christoph Hellwig
2018-05-31 13:49 ` Brian Foster
2018-05-30 10:00 ` [PATCH 18/18] xfs: allow writeback on pages without buffer heads Christoph Hellwig
2018-05-30 18:08 ` Darrick J. Wong
2018-05-31 13:49 ` Brian Foster
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