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cifs: do d_move in rename 

See commit 349457ccf2
"Allow file systems to manually d_move() inside of ->rename()"

Lessens possibility of race conditions in rename

Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Steve French 2020-02-25 18:08:54 -06:00
parent 69dda3059e
commit c7e9f78f7b
2 changed files with 4 additions and 2 deletions
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4
fs/cifs/cifsfs.c
View File

@ -1018,7 +1018,7 @@ struct file_system_type cifs_fs_type = {
.name = "cifs",
.mount = cifs_do_mount,
.kill_sb = cifs_kill_sb,
/* .fs_flags */
.fs_flags = FS_RENAME_DOES_D_MOVE,
};
MODULE_ALIAS_FS("cifs");
@ -1027,7 +1027,7 @@ static struct file_system_type smb3_fs_type = {
.name = "smb3",
.mount = smb3_do_mount,
.kill_sb = cifs_kill_sb,
/* .fs_flags */
.fs_flags = FS_RENAME_DOES_D_MOVE,
};
MODULE_ALIAS_FS("smb3");
MODULE_ALIAS("smb3");

2
fs/cifs/inode.c
View File

@ -1835,6 +1835,8 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
CIFSSMBClose(xid, tcon, fid.netfid);
}
do_rename_exit:
if (rc == 0)
d_move(from_dentry, to_dentry);
cifs_put_tlink(tlink);
return rc;
}