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[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>
This commit is contained in:
OGAWA Hirofumi 2007-02-20 13:57:55 -08:00 committed by Linus Torvalds
parent 346fd59bab
commit 94412a96c4
1 changed files with 3 additions and 1 deletions
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4
fs/fat/inode.c
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@ -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
* updating ->mmu_private.
*
* Return 0, and fallback to normal buffered write.
*/
loff_t size = offset + iov_length(iov, nr_segs);
if (MSDOS_I(inode)->mmu_private < size)
return -EINVAL;
return 0;
}
/*