Commit 121cef8f authored Mar 22, 2016 by Andy Lutomirski Committed by Linus Torvalds Mar 22, 2016

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>

parent 6d8bedff

fs/ext4/dir.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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