linux-kernel - Re: [PATCH v3 04/13] btrfs: fiemap: emit new COMPRESSED state.

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Message-Id: <9F887394-68D4-4C2B-A5FA-1CA3D83C0E31@dilger.ca>
Date: Fri, 5 Apr 2024 13:10:50 -0600
From: Andreas Dilger <adilger@...ger.ca>
To: Sweet Tea Dorminy <sweettea-kernel@...miny.me>
Cc: Jonathan Corbet <corbet@....net>,
 Kent Overstreet <kent.overstreet@...ux.dev>,
 Brian Foster <bfoster@...hat.com>,
 Chris Mason <clm@...com>,
 Josef Bacik <josef@...icpanda.com>,
 David Sterba <dsterba@...e.com>,
 Jaegeuk Kim <jaegeuk@...nel.org>,
 Chao Yu <chao@...nel.org>,
 Alexander Viro <viro@...iv.linux.org.uk>,
 Christian Brauner <brauner@...nel.org>,
 Jan Kara <jack@...e.cz>,
 Mickaël Salaün <mic@...ikod.net>,
 linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org,
 linux-bcachefs@...r.kernel.org,
 linux-btrfs@...r.kernel.org,
 linux-f2fs-devel@...ts.sourceforge.net,
 linux-fsdevel@...r.kernel.org,
 kernel-team@...a.com
Subject: Re: [PATCH v3 04/13] btrfs: fiemap: emit new COMPRESSED state.

On Apr 3, 2024, at 1:22 AM, Sweet Tea Dorminy <sweettea-kernel@...miny.me> wrote:
> 
> Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@...miny.me>

I would recommend to merge this with the 05/13 patch that is setting the btrfs
fe_physical_length field.  Otherwise, by itself it would be confusing that the
DATA_COMPRESSED flag is set on the extent without fe_physical_length being set
to be able to do anything with that information.

Cheers, Andreas

> ---
> fs/btrfs/extent_io.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
> index 9e421d99fd5c..e9df670ef7d2 100644
> --- a/fs/btrfs/extent_io.c
> +++ b/fs/btrfs/extent_io.c
> @@ -2706,7 +2706,7 @@ static int emit_fiemap_extent(struct fiemap_extent_info *fieinfo,
> 			if (range_end <= cache_end)
> 				return 0;
> 
> -			if (!(flags & (FIEMAP_EXTENT_ENCODED | FIEMAP_EXTENT_DELALLOC)))
> +			if (!(flags & (FIEMAP_EXTENT_DATA_COMPRESSED | FIEMAP_EXTENT_DELALLOC)))
> 				phys += cache_end - offset;
> 
> 			offset = cache_end;
> @@ -3236,7 +3236,7 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
> 		}
> 
> 		if (compression != BTRFS_COMPRESS_NONE)
> -			flags |= FIEMAP_EXTENT_ENCODED;
> +			flags |= FIEMAP_EXTENT_DATA_COMPRESSED;
> 
> 		if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
> 			flags |= FIEMAP_EXTENT_DATA_INLINE;
> --
> 2.43.0
> 
> 

Cheers, Andreas

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