Messages in this thread Patch in this message | | | Subject | [PATCH] ext4: keep existing extra fields when inode expands | From | Konstantin Khlebnikov <> | Date | Fri, 19 May 2017 10:13:39 +0300 |
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ext4_expand_extra_isize() should clear only space between old and new size.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> --- fs/ext4/inode.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 5834c4d76be8..7204e1a2801a 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5637,8 +5637,9 @@ static int ext4_expand_extra_isize(struct inode *inode, /* No extended attributes present */ if (!ext4_test_inode_state(inode, EXT4_STATE_XATTR) || header->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC)) { - memset((void *)raw_inode + EXT4_GOOD_OLD_INODE_SIZE, 0, - new_extra_isize); + memset((void *)raw_inode + EXT4_GOOD_OLD_INODE_SIZE + + EXT4_I(inode)->i_extra_isize, 0, + new_extra_isize - EXT4_I(inode)->i_extra_isize); EXT4_I(inode)->i_extra_isize = new_extra_isize; return 0; }
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