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From: Christoph Hellwig <hch@lst.de>
To: Chandan Babu R <chandan.babu@oracle.com>,
	"Darrick J. Wong" <djwong@kernel.org>,
	Hugh Dickins <hughd@google.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: linux-xfs@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 10/21] xfs: don't try to handle non-update pages in xfile_obj_load
Date: Fri, 26 Jan 2024 14:28:52 +0100	[thread overview]
Message-ID: <20240126132903.2700077-11-hch@lst.de> (raw)
In-Reply-To: <20240126132903.2700077-1-hch@lst.de>

shmem_read_mapping_page_gfp always returns an uptodate page or an
ERR_PTR.  Remove the code that tries to handle a non-uptodate page.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
---
 fs/xfs/scrub/xfile.c | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/fs/xfs/scrub/xfile.c b/fs/xfs/scrub/xfile.c
index d65681372a7458..71c4102f3305fe 100644
--- a/fs/xfs/scrub/xfile.c
+++ b/fs/xfs/scrub/xfile.c
@@ -166,18 +166,14 @@ xfile_load(
 			goto advance;
 		}
 
-		if (PageUptodate(page)) {
-			/*
-			 * xfile pages must never be mapped into userspace, so
-			 * we skip the dcache flush.
-			 */
-			kaddr = kmap_local_page(page);
-			p = kaddr + offset_in_page(pos);
-			memcpy(buf, p, len);
-			kunmap_local(kaddr);
-		} else {
-			memset(buf, 0, len);
-		}
+		/*
+		 * xfile pages must never be mapped into userspace, so
+		 * we skip the dcache flush.
+		 */
+		kaddr = kmap_local_page(page);
+		p = kaddr + offset_in_page(pos);
+		memcpy(buf, p, len);
+		kunmap_local(kaddr);
 		put_page(page);
 
 advance:
-- 
2.39.2



  parent reply	other threads:[~2024-01-26 13:30 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-26 13:28 put the xfs xfile abstraction on a diet v2 Christoph Hellwig
2024-01-26 13:28 ` [PATCH 01/21] mm: move mapping_set_update out of <linux/swap.h> Christoph Hellwig
2024-01-26 14:39   ` Matthew Wilcox
2024-01-26 13:28 ` [PATCH 02/21] shmem: move shmem_mapping out of line Christoph Hellwig
2024-01-26 14:40   ` Matthew Wilcox
2024-01-26 13:28 ` [PATCH 03/21] shmem: set a_ops earlier in shmem_symlink Christoph Hellwig
2024-01-26 14:41   ` Matthew Wilcox
2024-01-26 13:28 ` [PATCH 04/21] shmem: move the shmem_mapping assert into shmem_get_folio_gfp Christoph Hellwig
2024-01-26 15:09   ` Matthew Wilcox
2024-01-26 13:28 ` [PATCH 05/21] shmem: export shmem_get_folio Christoph Hellwig
2024-01-26 15:15   ` Matthew Wilcox
2024-01-26 13:28 ` [PATCH 06/21] shmem: export shmem_kernel_file_setup Christoph Hellwig
2024-01-26 15:45   ` Matthew Wilcox
2024-01-26 13:28 ` [PATCH 07/21] shmem: document how to "persist" data when using shmem_*file_setup Christoph Hellwig
2024-01-26 15:49   ` Matthew Wilcox
2024-01-28 16:54     ` Christoph Hellwig
2024-01-29 15:56       ` Matthew Wilcox
2024-01-29 16:04         ` Christoph Hellwig
2024-01-26 13:28 ` [PATCH 08/21] xfs: remove xfile_stat Christoph Hellwig
2024-01-26 13:28 ` [PATCH 09/21] xfs: remove the xfile_pread/pwrite APIs Christoph Hellwig
2024-01-26 16:21   ` Matthew Wilcox
2024-01-26 16:48     ` Darrick J. Wong
2024-01-26 13:28 ` Christoph Hellwig [this message]
2024-01-26 13:28 ` [PATCH 11/21] xfs: shmem_file_setup can't return NULL Christoph Hellwig
2024-01-26 13:28 ` [PATCH 12/21] xfs: don't modify file and inode flags for shmem files Christoph Hellwig
2024-01-26 13:28 ` [PATCH 13/21] xfs: don't allow highmem pages in xfile mappings Christoph Hellwig
2024-01-26 16:26   ` Matthew Wilcox
2024-01-26 13:28 ` [PATCH 14/21] xfs: use shmem_get_folio in xfile_obj_store Christoph Hellwig
2024-01-26 16:29   ` Matthew Wilcox
2024-01-26 13:28 ` [PATCH 15/21] xfs: use shmem_get_folio in in xfile_load Christoph Hellwig
2024-01-26 13:28 ` [PATCH 16/21] xfs: improve detection of lost xfile contents Christoph Hellwig
2024-01-26 16:33   ` Matthew Wilcox
2024-01-26 16:50     ` Darrick J. Wong
2024-01-28 16:55     ` Christoph Hellwig
2024-01-28 20:33       ` Matthew Wilcox
2024-01-26 13:28 ` [PATCH 17/21] xfs: add file_{get,put}_folio Christoph Hellwig
2024-01-26 16:40   ` Matthew Wilcox
2024-01-26 16:55     ` Darrick J. Wong
2024-01-27  1:26   ` Kent Overstreet
2024-01-27  1:32     ` Darrick J. Wong
2024-01-26 13:29 ` [PATCH 18/21] xfs: remove xfarray_sortinfo.page_kaddr Christoph Hellwig
2024-01-26 13:29 ` [PATCH 19/21] xfs: fix a comment in xfarray.c Christoph Hellwig
2024-01-26 13:29 ` [PATCH 20/21] xfs: convert xfarray_pagesort to deal with large folios Christoph Hellwig
2024-01-27  1:09   ` Kent Overstreet
2024-01-26 13:29 ` [PATCH 21/21] xfs: remove xfile_{get,put}_page Christoph Hellwig
2024-01-26 14:15 ` put the xfs xfile abstraction on a diet v2 Matthew Wilcox
2024-01-26 14:18   ` Christoph Hellwig
2024-01-26 16:47 ` Matthew Wilcox

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