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From: Joanne Koong <joannelkoong@gmail.com>
To: miklos@szeredi.hu, linux-fsdevel@vger.kernel.org
Cc: josef@toxicpanda.com, bernd.schubert@fastmail.fm,
	jefflexu@linux.alibaba.com, kernel-team@meta.com
Subject: [PATCH v2 9/9] fuse: tidy up error paths in fuse_writepages_fill() and fuse_writepage_locked()
Date: Wed, 21 Aug 2024 16:22:41 -0700	[thread overview]
Message-ID: <20240821232241.3573997-10-joannelkoong@gmail.com> (raw)
In-Reply-To: <20240821232241.3573997-1-joannelkoong@gmail.com>

Tidy up the error paths in fuse_writepages_fill() and
fuse_writepage_locked() to be easier to read / less cluttered.

No functional changes added.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
---
 fs/fuse/file.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index fe8ae19587fb..0a3a92ef645d 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2098,16 +2098,19 @@ static int fuse_writepage_locked(struct folio *folio)
 	struct fuse_args_pages *ap;
 	struct folio *tmp_folio;
 	struct fuse_file *ff;
-	int error = -ENOMEM;
+	int error;
 
 	tmp_folio = folio_alloc(GFP_NOFS | __GFP_HIGHMEM, 0);
-	if (!tmp_folio)
+	if (!tmp_folio) {
+		error = -ENOMEM;
 		goto err;
+	}
 
-	error = -EIO;
 	ff = fuse_write_file_get(fi);
-	if (!ff)
+	if (!ff) {
+		error = -EIO;
 		goto err_nofile;
+	}
 
 	wpa = fuse_writepage_args_setup(folio, ff);
 	if (!wpa) {
@@ -2287,17 +2290,18 @@ static int fuse_writepages_fill(struct folio *folio,
 	struct fuse_inode *fi = get_fuse_inode(inode);
 	struct fuse_conn *fc = get_fuse_conn(inode);
 	struct folio *tmp_folio;
-	int err;
+	int err = 0;
 
 	if (wpa && fuse_writepage_need_send(fc, &folio->page, ap, data)) {
 		fuse_writepages_send(data);
 		data->wpa = NULL;
 	}
 
-	err = -ENOMEM;
 	tmp_folio = folio_alloc(GFP_NOFS | __GFP_HIGHMEM, 0);
-	if (!tmp_folio)
+	if (!tmp_folio) {
+		err = -ENOMEM;
 		goto out_unlock;
+	}
 
 	/*
 	 * The page must not be redirtied until the writeout is completed
@@ -2313,10 +2317,10 @@ static int fuse_writepages_fill(struct folio *folio,
 	 * under writeback, so we can release the page lock.
 	 */
 	if (data->wpa == NULL) {
-		err = -ENOMEM;
 		wpa = fuse_writepage_args_setup(folio, data->ff);
 		if (!wpa) {
 			folio_put(tmp_folio);
+			err = -ENOMEM;
 			goto out_unlock;
 		}
 		fuse_file_get(wpa->ia.ff);
@@ -2329,7 +2333,6 @@ static int fuse_writepages_fill(struct folio *folio,
 
 	data->orig_pages[ap->num_pages] = &folio->page;
 
-	err = 0;
 	if (data->wpa) {
 		/*
 		 * Protected by fi->lock against concurrent access by
-- 
2.43.5


  parent reply	other threads:[~2024-08-21 23:25 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-21 23:22 [PATCH v2 0/9] fuse: writeback clean up / refactoring Joanne Koong
2024-08-21 23:22 ` [PATCH v2 1/9] fuse: drop unused fuse_mount arg in fuse_writepage_finish() Joanne Koong
2024-08-21 23:22 ` [PATCH v2 2/9] fuse: refactor finished writeback stats updates into helper function Joanne Koong
2024-08-21 23:22 ` [PATCH v2 3/9] fuse: update stats for pages in dropped aux writeback list Joanne Koong
2024-08-21 23:22 ` [PATCH v2 4/9] fuse: clean up error handling in fuse_writepages() Joanne Koong
2024-08-21 23:22 ` [PATCH v2 5/9] fuse: move initialization of fuse_file to fuse_writepages() instead of in callback Joanne Koong
2024-08-22  9:39   ` Miklos Szeredi
2024-08-21 23:22 ` [PATCH v2 6/9] fuse: convert fuse_writepages_fill() to use a folio for its tmp page Joanne Koong
2024-08-21 23:22 ` [PATCH v2 7/9] fuse: move folio_start_writeback to after the allocations in fuse_writepage_locked() Joanne Koong
2024-08-21 23:22 ` [PATCH v2 8/9] fuse: refactor out shared logic in fuse_writepages_fill() and fuse_writepage_locked() Joanne Koong
2024-08-22  9:58   ` Miklos Szeredi
2024-08-22 17:08     ` Joanne Koong
2024-08-21 23:22 ` Joanne Koong [this message]
2024-08-22  9:59   ` [PATCH v2 9/9] fuse: tidy up error paths " Miklos Szeredi
2024-08-22  9:03 ` [PATCH v2 0/9] fuse: writeback clean up / refactoring Miklos Szeredi

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