From 121cef8f17d80e97838ea2f88715417e675e4403 Mon Sep 17 00:00:00 2001
From: Andy Lutomirski <luto@kernel.org>
Date: Tue, 22 Mar 2016 14:25:04 -0700
Subject: [PATCH] ext4: in ext4_dir_llseek, check syscall bitness directly
ext4 treats directory offsets differently for 32-bit and 64-bit callers.
Check the caller type using in_compat_syscall, not is_compat_task. This
changes behavior on SPARC slightly.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
fs/ext4/dir.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 33f5e2a50cf88..50ba27cbed034 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -285,7 +285,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
static inline int is_32bit_api(void)
{
#ifdef CONFIG_COMPAT
- return is_compat_task();
+ return in_compat_syscall();
#else
return (BITS_PER_LONG == 32);
#endif
--
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