From 06222e491e663dac939f04b125c9dc52126a75c4 Mon Sep 17 00:00:00 2001
From: Josef Bacik <josef@redhat.com>
Date: Mon, 18 Jul 2011 13:21:38 -0400
Subject: fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their
own llseek
This converts everybody to handle SEEK_HOLE/SEEK_DATA properly. In some cases
we just return -EINVAL, in others we do the normal generic thing, and in others
we're simply making sure that the properly due-dilligence is done. For example
in NFS/CIFS we need to make sure the file size is update properly for the
SEEK_HOLE and SEEK_DATA case, but since it calls the generic llseek stuff itself
that is all we have to do. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/nfs/file.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
(limited to 'fs/nfs')
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 2f093ed1698..2c1705b6acd 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -187,8 +187,11 @@ static loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin)
filp->f_path.dentry->d_name.name,
offset, origin);
- /* origin == SEEK_END => we must revalidate the cached file length */
- if (origin == SEEK_END) {
+ /*
+ * origin == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate
+ * the cached file length
+ */
+ if (origin != SEEK_SET || origin != SEEK_CUR) {
struct inode *inode = filp->f_mapping->host;
int retval = nfs_revalidate_file_size(inode, filp);
--
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