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authorRonnie Sahlberg <lsahlber@redhat.com>2019-05-15 00:17:02 +0300
committerSteve French <stfrench@microsoft.com>2019-05-16 06:27:53 +0300
commitdece44e381ab4a9fd1021db45ba4472e8c85becb (patch)
tree0acf0893d4a05cfb0045df758cf47a4bddd070d1 /fs/cifs/cifsfs.c
parent9ab70ca653307771589e1414102c552d8dbdbbef (diff)
downloadlinux-dece44e381ab4a9fd1021db45ba4472e8c85becb.tar.xz
cifs: add support for SEEK_DATA and SEEK_HOLE
Add llseek op for SEEK_DATA and SEEK_HOLE. Improves xfstests/285,286,436,445,448 and 490 Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/cifsfs.c')
-rw-r--r--fs/cifs/cifsfs.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index d0cb042732cb..f5fcd6360056 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -878,6 +878,9 @@ out:
static loff_t cifs_llseek(struct file *file, loff_t offset, int whence)
{
+ struct cifsFileInfo *cfile = file->private_data;
+ struct cifs_tcon *tcon;
+
/*
* whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate
* the cached file length
@@ -909,6 +912,12 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int whence)
if (rc < 0)
return (loff_t)rc;
}
+ if (cfile && cfile->tlink) {
+ tcon = tlink_tcon(cfile->tlink);
+ if (tcon->ses->server->ops->llseek)
+ return tcon->ses->server->ops->llseek(file, tcon,
+ offset, whence);
+ }
return generic_file_llseek(file, offset, whence);
}