Thread (61 messages) 61 messages, 4 authors, 2018-05-31

Re: [PATCH 17/18] xfs: do not set the page uptodate in xfs_writepage_map

From: Darrick J. Wong <hidden>
Date: 2018-05-30 18:08:39
Also in: linux-fsdevel, linux-xfs

On Wed, May 30, 2018 at 12:00:12PM +0200, Christoph Hellwig wrote:
We already track the page uptodate status based on the buffer uptodate
status, which is updated whenever reading or zeroing blocks.

This code has been there since commit a ptool commit in 2002, which
claims to:

    "merge" the 2.4 fsx fix for block size < page size to 2.5.  This needed
    major changes to actually fit.

and isn't present in other writepage implementations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks ok, assuming that reads or buffered writes set the page
uptodate...

Reviewed-by: Darrick J. Wong <redacted>

--D
quoted hunk ↗ jump to hunk
---
 fs/xfs/xfs_aops.c | 5 -----
 1 file changed, 5 deletions(-)
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index ac417ef326a9..84f88cecd2f1 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -786,7 +786,6 @@ xfs_writepage_map(
 	ssize_t			len = i_blocksize(inode);
 	int			error = 0;
 	int			count = 0;
-	bool			uptodate = true;
 	loff_t			file_offset;	/* file offset of page */
 	unsigned		poffset;	/* offset into page */
 
@@ -813,7 +812,6 @@ xfs_writepage_map(
 		if (!buffer_uptodate(bh)) {
 			if (PageUptodate(page))
 				ASSERT(buffer_mapped(bh));
-			uptodate = false;
 			continue;
 		}
 
@@ -847,9 +845,6 @@ xfs_writepage_map(
 		count++;
 	}
 
-	if (uptodate && poffset == PAGE_SIZE)
-		SetPageUptodate(page);
-
 	ASSERT(wpc->ioend || list_empty(&submit_list));
 
 out:
-- 
2.17.0

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