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>

diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 33f5e2a50cf883c43842e1c89a868fcf70c4c2a9..50ba27cbed034115c4ad3f608aa9758860d2cd76 100644 (file)
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -285,7 +285,7 @@ errout:
 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