This is a note to let you know that I've just added the patch titled
fs/ufs: Set UFS default maximum bytes per file
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
fs-ufs-set-ufs-default-maximum-bytes-per-file.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 239e250e4acbc0104d514307029c0839e834a51a Mon Sep 17 00:00:00 2001
From: Richard Narron <comet.berkeley@xxxxxxxxx>
Date: Sun, 4 Jun 2017 16:23:18 -0700
Subject: fs/ufs: Set UFS default maximum bytes per file
From: Richard Narron <comet.berkeley@xxxxxxxxx>
commit 239e250e4acbc0104d514307029c0839e834a51a upstream.
This fixes a problem with reading files larger than 2GB from a UFS-2
file system:
https://bugzilla.kernel.org/show_bug.cgi?id=195721
The incorrect UFS s_maxsize limit became a problem as of commit
c2a9737f45e2 ("vfs,mm: fix a dead loop in truncate_inode_pages_range()")
which started using s_maxbytes to avoid a page index overflow in
do_generic_file_read().
That caused files to be truncated on UFS-2 file systems because the
default maximum file size is 2GB (MAX_NON_LFS) and UFS didn't update it.
Here I simply increase the default to a common value used by other file
systems.
Signed-off-by: Richard Narron <comet.berkeley@xxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Will B <will.brokenbourgh2877@xxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ufs/super.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -812,9 +812,8 @@ static int ufs_fill_super(struct super_b
uspi->s_dirblksize = UFS_SECTOR_SIZE;
super_block_offset=UFS_SBLOCK;
- /* Keep 2Gig file limit. Some UFS variants need to override
- this but as I don't know which I'll let those in the know loosen
- the rules */
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
+
switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
case UFS_MOUNT_UFSTYPE_44BSD:
UFSD("ufstype=44bsd\n");
Patches currently in stable-queue which might be from comet.berkeley@xxxxxxxxx are
queue-4.9/fs-ufs-set-ufs-default-maximum-bytes-per-file.patch