unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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ovl: fix incorrect extent info in metacopy case

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In metacopy case, we should use ovl_inode_realdata() instead of
ovl_inode_real() to get real inode which has data, so that
we can get correct information of extentes in ->fiemap operation.

Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Chengguang Xu 2020-06-24 18:20:11 +08:00 committed by Miklos Szeredi
parent cef4cbff06
commit c11faf3259
1 changed files with 1 additions and 1 deletions
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2
fs/overlayfs/inode.c
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@ -476,7 +476,7 @@ static int ovl_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len)
{
int err;
struct inode *realinode = ovl_inode_real(inode);
struct inode *realinode = ovl_inode_realdata(inode);
const struct cred *old_cred;
if (!realinode->i_op->fiemap)