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-rw-r--r--fs/proc/generic.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 2791907..dd29f03 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -12,6 +12,7 @@
#include <linux/time.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
+#include <linux/mm.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/mount.h>
@@ -258,17 +259,22 @@ static int proc_notify_change(struct dentry *dentry, struct iattr *iattr)
error = inode_change_ok(inode, iattr);
if (error)
- goto out;
+ return error;
- error = inode_setattr(inode, iattr);
- if (error)
- goto out;
+ if ((iattr->ia_valid & ATTR_SIZE) &&
+ iattr->ia_size != i_size_read(inode)) {
+ error = vmtruncate(inode, iattr->ia_size);
+ if (error)
+ return error;
+ }
+
+ setattr_copy(inode, iattr);
+ mark_inode_dirty(inode);
de->uid = inode->i_uid;
de->gid = inode->i_gid;
de->mode = inode->i_mode;
-out:
- return error;
+ return 0;
}
static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry,