[PATCH 27/34] xfs: don't clear imap_valid for a non-uptodate buffers
From: Christoph Hellwig <hch@lst.de>
Date: 2018-05-23 14:43:50
Also in:
linux-fsdevel, linux-xfs
Subsystem:
filesystems (vfs and infrastructure), the rest, xfs filesystem · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds, Carlos Maiolino
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 b1dee2171194..82fd08c29f7f 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c@@ -859,15 +859,12 @@ 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