[kernel/f18] Patch to fix efivarfs underflow from Lingzhu Xiang (rhbz 888163)

[Josh Boyer]

commit ac003e409f309dd7dee2518364fbb18d2983c7aa
Author: Josh Boyer <jwboyer at redhat.com>
Date:   Mon Jan 7 11:23:18 2013 -0500

    Patch to fix efivarfs underflow from Lingzhu Xiang (rhbz 888163)

 efivarfs-3.7.patch |   24 ++++++++++++++++++++++++
 kernel.spec        |    3 +++
 2 files changed, 27 insertions(+), 0 deletions(-)
---
diff --git a/efivarfs-3.7.patch b/efivarfs-3.7.patch
index 3009107..6624064 100644
--- a/efivarfs-3.7.patch
+++ b/efivarfs-3.7.patch
@@ -1628,3 +1628,27 @@ index 58cec62..9ac9340 100644
 -- 
 1.7.12.1
 
+efivarfs_unlink() should drop the file's link count, not the directory's.
+
+Tested-by: Lee, Chun-Yi <jlee at suse.com>
+Signed-off-by: Lingzhu Xiang <lxiang at redhat.com>
+---
+ drivers/firmware/efivars.c |    2 +-
+ 1 files changed, 1 insertions(+), 1 deletions(-)
+
+diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
+index d6b8d2f..60f5324 100644
+--- a/drivers/firmware/efivars.c
++++ b/drivers/firmware/efivars.c
+@@ -995,7 +995,7 @@ static int efivarfs_unlink(struct inode *dir, struct dentry *dentry)
+ 		list_del(&var->list);
+ 		spin_unlock(&efivars->lock);
+ 		efivar_unregister(var);
+-		drop_nlink(dir);
++		drop_nlink(dentry->d_inode);
+ 		dput(dentry);
+ 		return 0;
+ 	}
+-- 
+1.7.7.6
+
diff --git a/kernel.spec b/kernel.spec
index fc24a6d..8ef0cb9 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -2398,6 +2398,9 @@ fi
 #                 ||----w |
 #                 ||     ||
 %changelog
+* Mon Jan 07 2013 Josh Boyer <jwboyer at redhat.com>
+- Patch to fix efivarfs underflow from Lingzhu Xiang (rhbz 888163)
+
 * Sun Jan 06 2013 Josh Boyer <jwboyer at redhat.com>
 - Fix version.h include due to UAPI change in 3.7 (rhbz 892373)