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ufs: set correct ->s_maxsize

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Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-06-08 21:15:45 -04:00
parent eb315d2ae6
commit 6b0d144fa7
1 changed files with 18 additions and 0 deletions
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18
fs/ufs/super.c
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@ -746,6 +746,23 @@ static void ufs_put_super(struct super_block *sb)
return;
}
static u64 ufs_max_bytes(struct super_block *sb)
{
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
int bits = uspi->s_apbshift;
u64 res;
if (bits > 21)
res = ~0ULL;
else
res = UFS_NDADDR + (1LL << bits) + (1LL << (2*bits)) +
(1LL << (3*bits));
if (res >= (MAX_LFS_FILESIZE >> uspi->s_bshift))
return MAX_LFS_FILESIZE;
return res << uspi->s_bshift;
}
static int ufs_fill_super(struct super_block *sb, void *data, int silent)
{
struct ufs_sb_info * sbi;
@ -1212,6 +1229,7 @@ magic_found:
"fast symlink size (%u)\n", uspi->s_maxsymlinklen);
uspi->s_maxsymlinklen = maxsymlen;
}
sb->s_maxbytes = ufs_max_bytes(sb);
sb->s_max_links = UFS_LINK_MAX;
inode = ufs_iget(sb, UFS_ROOTINO);