This patch is a response to a problem with reading files larger than 2GB from a UFS-2 file system:
https://bugzilla.kernel.org/show_bug.cgi?id=195721
The problem was started with a patch to Linux 4.8.4 mm/filemap.c to fix a truncation problem:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-4.8.y&id=3d549dcfbbb0ecdaa571431a27ee5da9f2466716
which truncates UFS-2 file systems because the default maximum file size
is 2GB (MAX_NON_LFS)
Here I simply increase the default to a common value used by other file
systems.
Signed-off-by: Richard Narron <comet.berkeley@xxxxxxxxx>
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--- a/fs/ufs/super.c.orig 2017-05-28 17:20:53.000000000 -0700
+++ b/fs/ufs/super.c 2017-06-03 17:08:33.340100262 -0700
@@ -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");
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