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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-08 21:15:45 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-09 16:28:01 -0400 |
| commit | 6b0d144fa758869bdd652c50aa41aaf601232550 (patch) | |
| tree | a47f0b980f80de487442f3fdd814d153c636d86f /fs | |
| parent | eb315d2ae614493fd1ebb026c75a80573d84f7ad (diff) | |
| download | lwn-6b0d144fa758869bdd652c50aa41aaf601232550.tar.gz lwn-6b0d144fa758869bdd652c50aa41aaf601232550.zip | |
ufs: set correct ->s_maxsize
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ufs/super.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 131b2b77c818..d9aa2627c9df 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -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); |