[PATCH 2/5] ext4: inline: use cached i_inline_size instead of e_value_size

[Thadeu Lima de Souza Cascardo]

i_inline_size caches the total size of the inline data, it is always
EXT4_MIN_INLINE_DATA_SIZE plus the size of the system.data xattr value.

This avoids looking up for the entry again, which allows i_inline_off to be
used to point directly to the inline data.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxx>
---
 fs/ext4/inline.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index 0611a050668b..b49cfcadbd36 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -80,10 +80,8 @@ static int get_max_inline_xattr_value_size(struct inode *inode,
 		((void *)entry - (void *)IFIRST(header)) - sizeof(__u32);
 
 	if (EXT4_I(inode)->i_inline_off) {
-		entry = (struct ext4_xattr_entry *)
-			((void *)raw_inode + EXT4_I(inode)->i_inline_off);
-
-		free += EXT4_XATTR_SIZE(le32_to_cpu(entry->e_value_size));
+		free += EXT4_I(inode)->i_inline_size -
+				EXT4_MIN_INLINE_DATA_SIZE;
 		goto out;
 	}
 
-- 
2.34.1