Hi, Is there any reason this cannot be sent to Linus now? Steve. On Wed, 2010-12-08 at 12:03 -0500, Josef Bacik wrote: > Some filesystems don't deal well with being asked to map less than blocksize > blocks (GFS2 for example). Since we are always mapping at least blocksize > sections anyway, just make sure len is at least as big as a blocksize so we > don't trip up any filesystems. Thanks, > > Signed-off-by: Josef Bacik <josef@xxxxxxxxxx> > --- > fs/ioctl.c | 7 +++++++ > 1 files changed, 7 insertions(+), 0 deletions(-) > > diff --git a/fs/ioctl.c b/fs/ioctl.c > index d6cc164..6b53c24 100644 > --- a/fs/ioctl.c > +++ b/fs/ioctl.c > @@ -273,6 +273,13 @@ int __generic_block_fiemap(struct inode *inode, > len = isize; > } > > + /* > + * Some filesystems can't deal with being asked to map less than > + * blocksize, so make sure our len is at least block length. > + */ > + if (logical_to_blk(inode, len) == 0) > + len = blk_to_logical(inode, 1); > + > start_blk = logical_to_blk(inode, start); > last_blk = logical_to_blk(inode, start + len - 1); > -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
