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Date: Mon, 12 Jul 2021 12:20:03 -0600 From: Andreas Dilger <adilger@...ger.ca> To: Jan Kara <jack@...e.cz> Cc: Ted Tso <tytso@....edu>, linux-ext4@...r.kernel.org Subject: Re: [PATCH 1/9] ext2fs: Drop HAS_SNAPSHOT feature NAK. We are working on a snapshot implementation for ext4, it is just taking a lot longer that I thought it would to complete. There isn't any shortage of these feature bits, so no reason to re-use them. Cheers, Andreas > On Jul 12, 2021, at 09:43, Jan Kara <jack@...e.cz> wrote: > > It has never been implemented and is dead for quite some time and > unused AFAICT. > > Signed-off-by: Jan Kara <jack@...e.cz> > --- > lib/ext2fs/ext2_fs.h | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h > index e92a045205a9..6f1d5db4b482 100644 > --- a/lib/ext2fs/ext2_fs.h > +++ b/lib/ext2fs/ext2_fs.h > @@ -825,7 +825,6 @@ struct ext2_super_block { > #define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 > #define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 > #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 > -#define EXT4_FEATURE_RO_COMPAT_HAS_SNAPSHOT 0x0080 > #define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100 > #define EXT4_FEATURE_RO_COMPAT_BIGALLOC 0x0200 > /* > @@ -926,7 +925,6 @@ EXT4_FEATURE_RO_COMPAT_FUNCS(huge_file, 4, HUGE_FILE) > EXT4_FEATURE_RO_COMPAT_FUNCS(gdt_csum, 4, GDT_CSUM) > EXT4_FEATURE_RO_COMPAT_FUNCS(dir_nlink, 4, DIR_NLINK) > EXT4_FEATURE_RO_COMPAT_FUNCS(extra_isize, 4, EXTRA_ISIZE) > -EXT4_FEATURE_RO_COMPAT_FUNCS(has_snapshot, 4, HAS_SNAPSHOT) > EXT4_FEATURE_RO_COMPAT_FUNCS(quota, 4, QUOTA) > EXT4_FEATURE_RO_COMPAT_FUNCS(bigalloc, 4, BIGALLOC) > EXT4_FEATURE_RO_COMPAT_FUNCS(metadata_csum, 4, METADATA_CSUM) > -- > 2.26.2 >
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