Eryu Guan <guaneryu@xxxxxxxxx> writes:
> Save one level of indention by returning error early.
>
> Introduce some local variables to make the code easier to read a bit,
> and do preparation for next patch.
>
> Signed-off-by: Eryu Guan <guaneryu@xxxxxxxxx>
Hi, Eryu,
I don't think you have a full appreciation of the amount of optimization
that goes into this code. I don't see anything wrong with what you've
done, but I also don't want to introduce all these local variables and
change a branch in order to find out several months down the line that
we introduced some TPC-C regression of .5%.
Look, I think this is all you need for the full fix:
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 4720377..f66754e 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -639,8 +639,7 @@ static int get_more_blocks(struct dio *dio, struct dio_submit *sdio,
*/
create = dio->rw & WRITE;
if (dio->flags & DIO_SKIP_HOLES) {
- if (sdio->block_in_file < (i_size_read(dio->inode) >>
- sdio->blkbits))
+ if (fs_startblk < fs_count)
create = 0;
}
Can you just test that?
Thanks,
Jeff
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