linux-ext4 - [RFCv2 2/5] ext4: Remove PAGE_SIZE assumption of folio from mpage_submit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <74182f5607ccfc3b1e7f08737fcb3442b42a2124.1684122756.git.ritesh.list@gmail.com>
Date:   Mon, 15 May 2023 16:10:41 +0530
From:   "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
To:     linux-ext4@...r.kernel.org, Matthew Wilcox <willy@...radead.org>
Cc:     linux-fsdevel@...r.kernel.org,
        Ojaswin Mujoo <ojaswin@...ux.ibm.com>,
        Disha Goel <disgoel@...ux.ibm.com>,
        "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
Subject: [RFCv2 2/5] ext4: Remove PAGE_SIZE assumption of folio from mpage_submit_folio

mpage_submit_folio() was converted to take folio. Even though
folio_size() in ext4 as of now is PAGE_SIZE, but it's better to
remove that assumption which I am assuming is a missed left over from
patch[1].

[1]: https://lore.kernel.org/linux-ext4/20230324180129.1220691-7-willy@infradead.org/

Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>
---
 fs/ext4/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index ce5f21b6c2b3..b9fa7c30a9a5 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1885,7 +1885,7 @@ static int mpage_submit_folio(struct mpage_da_data *mpd, struct folio *folio)
 	len = folio_size(folio);
 	if (folio_pos(folio) + len > size &&
 	    !ext4_verity_in_progress(mpd->inode))
-		len = size & ~PAGE_MASK;
+		len = size - folio_pos(folio);
 	err = ext4_bio_write_folio(&mpd->io_submit, folio, len);
 	if (!err)
 		mpd->wbc->nr_to_write--;
-- 
2.40.1