diff options
| author | Steve French <smfrench@gmail.com> | 2013-07-04 14:38:48 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-21 18:19:00 -0700 |
| commit | e2c411cce27a933da365034968f431a874e0001a (patch) | |
| tree | b01ac2b6582bda884c852c43a71b78e69bf86e79 | |
| parent | dd156c8db2ba5e40718fa7adfd25b3e846e6e83b (diff) | |
CIFS use sensible file nlink values if unprovided
commit 6658b9f70ebca5fc0795b1d6d733996af1e2caa7 upstream.
Certain servers may not set the NumberOfLinks field in query file/path
info responses. In such a case, cifs_inode_needs_reval() assumes that
all regular files are hardlinks and triggers revalidation, leading to
excessive and unnecessary network traffic.
This change hardcodes cf_nlink (and subsequently i_nlink) when not
returned by the server, similar to what already occurs in cifs_mkdir().
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/cifs/inode.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 6fbfbdba5701..43944c6d7b41 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -549,6 +549,11 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, fattr->cf_mode &= ~(S_IWUGO); fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); + if (fattr->cf_nlink < 1) { + cFYI(1, "replacing bogus file nlink value %u\n", + fattr->cf_nlink); + fattr->cf_nlink = 1; + } } fattr->cf_uid = cifs_sb->mnt_uid; |