[PATCH] efs: Remove incorrect unlock_kernel from failure path in efs_symlink_readpage()
If efs_symlink_readpage hits the -ENAMETOOLONG error path, it will call
unlock_kernel without ever having called lock_kernel(); fix this by
creating and jumping to a new label fail_notlocked rather than the fail
label used after calling lock_kernel().
Signed-off-by: Josh Triplett <josh@freedesktop.org>
Cc: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/efs/symlink.c b/fs/efs/symlink.c
index e249cf7..1d30d2f 100644
--- a/fs/efs/symlink.c
+++ b/fs/efs/symlink.c
@@ -22,7 +22,7 @@
err = -ENAMETOOLONG;
if (size > 2 * EFS_BLOCKSIZE)
- goto fail;
+ goto fail_notlocked;
lock_kernel();
/* read first 512 bytes of link target */
@@ -47,6 +47,7 @@
return 0;
fail:
unlock_kernel();
+fail_notlocked:
SetPageError(page);
kunmap(page);
unlock_page(page);