在 2021/1/23 5:22, Richard Weinberger 写道:
Although whiteouts are unlinked files they will get re-linked later,
I just want to make sure, is this where the count is increased?
do_rename -> inc_nlink(whiteout)
therefore the size of the parent directory needs to be updated too.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 9e0a1fff8db5 ("ubifs: Implement RENAME_WHITEOUT")
Signed-off-by: Richard Weinberger <richard@xxxxxx>
---
fs/ubifs/dir.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 8a34e0118ee9..b5d523e5854f 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -361,6 +361,7 @@ static int do_tmpfile(struct inode *dir, struct dentry *dentry,
struct ubifs_budget_req ino_req = { .dirtied_ino = 1 };
struct ubifs_inode *ui, *dir_ui = ubifs_inode(dir);
int err, instantiated = 0;
+ int sz_change = 0;
struct fscrypt_name nm;
/*
@@ -411,6 +412,8 @@ static int do_tmpfile(struct inode *dir, struct dentry *dentry,
mark_inode_dirty(inode);
drop_nlink(inode);
*whiteout = inode;
+ sz_change = CALC_DENT_SIZE(fname_len(&nm));
+ dir->i_size += sz_change;
} else {
d_tmpfile(dentry, inode);
}
@@ -430,6 +433,7 @@ static int do_tmpfile(struct inode *dir, struct dentry *dentry,
return 0;
out_cancel:
Does this need a judgment? Like this,
if (whiteout)
dir->i_size -= sz_change;
+ dir->i_size -= sz_change;
mutex_unlock(&dir_ui->ui_mutex);
out_inode:
make_bad_inode(inode);
