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Date:   Wed, 1 Jan 2020 15:22:58 +0530
From:   Ritesh Harjani <>
To:     Eric Biggers <>,
Subject: Re: [PATCH 0/8] ext4: extents.c cleanups

On 12/31/19 11:34 PM, Eric Biggers wrote:
> This series makes a few cleanups to things I noticed while reading some
> of the code in extents.c.
> No actual changes in behavior.
> Eric Biggers (8):
>    ext4: remove ext4_{ind,ext}_calc_metadata_amount()
>    ext4: clean up len and offset checks in ext4_fallocate()
>    ext4: remove redundant S_ISREG() checks from ext4_fallocate()
>    ext4: make some functions static in extents.c
>    ext4: fix documentation for ext4_ext_try_to_merge()
>    ext4: remove obsolete comment from ext4_can_extents_be_merged()
>    ext4: fix some nonstandard indentation in extents.c
>    ext4: add missing braces in ext4_ext_drop_refs()
>  >   fs/ext4/ext4.h         |  11 ----
>   fs/ext4/ext4_extents.h |   5 --
>   fs/ext4/extents.c      | 143 +++++++++++++----------------------------
>   fs/ext4/indirect.c     |  26 --------
>   fs/ext4/inode.c        |   3 -
>   fs/ext4/super.c        |   2 -
>   6 files changed, 45 insertions(+), 145 deletions(-)

Nice cleanup.

While reviewing your patch series also found an unused macro
"MPAGE_DA_EXTENT_TAIL" in inode.c file. Submitted a patch on top of
this series itself. Maybe it can be included as part of your extent
cleanup series itself.

Patch:- "ext4: remove unused macro MPAGE_DA_EXTENT_TAIL"

In your series I think that last 4 commits could be squashed into 1
commit itself, since those 4 patches are related to comments or
minor indentations in extents.c file. But no major objection on that.

Either ways, you may add.

Reviewed-by: Ritesh Harjani <>


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