linux-kernel - [PATCH] erofs: refine warning messages for data I/Os

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Date:   Wed,  9 Aug 2023 14:06:37 +0800
From:   Ferry Meng <mengferry@...ux.alibaba.com>
To:     linux-erofs@...ts.ozlabs.org
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Ferry Meng <mengferry@...ux.alibaba.com>
Subject: [PATCH] erofs: refine warning messages for data I/Os

Don't warn users since -EINTR is returned due to user interruption.
Also suppress warning messages of readmore.

Signed-off-by: Ferry Meng <mengferry@...ux.alibaba.com>
---
 fs/erofs/zdata.c | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index de4f12152b62..53820271e538 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -1848,15 +1848,10 @@ static void z_erofs_pcluster_readmore(struct z_erofs_decompress_frontend *f,
 
 		page = erofs_grab_cache_page_nowait(inode->i_mapping, index);
 		if (page) {
-			if (PageUptodate(page)) {
+			if (PageUptodate(page))
 				unlock_page(page);
-			} else {
-				err = z_erofs_do_read_page(f, page);
-				if (err)
-					erofs_err(inode->i_sb,
-						  "readmore error at page %lu @ nid %llu",
-						  index, EROFS_I(inode)->nid);
-			}
+			else
+				(void)z_erofs_do_read_page(f, page);
 			put_page(page);
 		}
 
@@ -1885,8 +1880,9 @@ static int z_erofs_read_folio(struct file *file, struct folio *folio)
 	/* if some compressed cluster ready, need submit them anyway */
 	z_erofs_runqueue(&f, z_erofs_is_sync_decompress(sbi, 0), false);
 
-	if (err)
-		erofs_err(inode->i_sb, "failed to read, err [%d]", err);
+	if (err && err != -EINTR)
+		erofs_err(inode->i_sb, "read error %d @ %lu of nid %llu",
+			  err, folio->index, EROFS_I(inode)->nid);
 
 	erofs_put_metabuf(&f.map.buf);
 	erofs_release_pages(&f.pagepool);
@@ -1920,10 +1916,9 @@ static void z_erofs_readahead(struct readahead_control *rac)
 		head = (void *)page_private(page);
 
 		err = z_erofs_do_read_page(&f, page);
-		if (err)
-			erofs_err(inode->i_sb,
-				  "readahead error at page %lu @ nid %llu",
-				  page->index, EROFS_I(inode)->nid);
+		if (err && err != -EINTR)
+			erofs_err(inode->i_sb, "readahead error %d @ %lu of nid %llu",
+				  err, page->index, EROFS_I(inode)->nid);
 		put_page(page);
 	}
 	z_erofs_pcluster_readmore(&f, rac, false);
-- 
2.19.1.6.gb485710b