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Commit 94412a96 authored Feb 20, 2007 by OGAWA Hirofumi Committed by Linus Torvalds Feb 20, 2007

[PATCH] FAT: DIO-write fallback to normal buffered



If the DIO write on FAT is expanding the size, it will be fail by -EINVAL,
because FAT can't handle it now.

This patch fallback it to the normal buffered-write and would return
success.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 346fd59b

fs/fat/inode.c

+3 −1

Original line number	Original line	Diff line number	Diff line
	@@ -173,10 +173,12 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
	*		*
	* But we must fill the remaining area or hole by nul for		* But we must fill the remaining area or hole by nul for
	* updating ->mmu_private.		* updating ->mmu_private.
			*
			* Return 0, and fallback to normal buffered write.
	*/		*/
	loff_t size = offset + iov_length(iov, nr_segs);		loff_t size = offset + iov_length(iov, nr_segs);
	if (MSDOS_I(inode)->mmu_private < size)		if (MSDOS_I(inode)->mmu_private < size)
	return -EINVAL;		return 0;
	}		}

	/*		/*