ext4: replace bogus assertion in ext4_xattr_shift_entries()
We were checking whether computed offsets do not exceed end of block in
ext4_xattr_shift_entries(). However this does not make sense since we
always only decrease offsets. So replace that assertion with a check
whether we really decrease xattrs value offsets.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 1447860..82b025c 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1319,18 +1319,19 @@
*/
static void ext4_xattr_shift_entries(struct ext4_xattr_entry *entry,
int value_offs_shift, void *to,
- void *from, size_t n, int blocksize)
+ void *from, size_t n)
{
struct ext4_xattr_entry *last = entry;
int new_offs;
+ /* We always shift xattr headers further thus offsets get lower */
+ BUG_ON(value_offs_shift > 0);
+
/* Adjust the value offsets of the entries */
for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
if (last->e_value_size) {
new_offs = le16_to_cpu(last->e_value_offs) +
value_offs_shift;
- BUG_ON(new_offs + le32_to_cpu(last->e_value_size)
- > blocksize);
last->e_value_offs = cpu_to_le16(new_offs);
}
}
@@ -1542,7 +1543,7 @@
ext4_xattr_shift_entries(entry, EXT4_I(inode)->i_extra_isize
- new_extra_isize, (void *)raw_inode +
EXT4_GOOD_OLD_INODE_SIZE + new_extra_isize,
- (void *)header, total_ino, inode->i_sb->s_blocksize);
+ (void *)header, total_ino);
EXT4_I(inode)->i_extra_isize = new_extra_isize;
brelse(bh);
out: