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ext2: Deprecate DAX

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Since PMEM didn't quite lift off, DAX isn't as widely used as we
originally hoped. Thus it doesn't seem warranted to support
implementation of DAX in ext2 driver when the same filesystem can be
accessed through ext4 driver as a "simple implementation". Just
deprecate DAX support in ext2 targetting completely dropping the code at
the end of 2025.

Link: https://lore.kernel.org/all/uiu7rcmtooxgbscaiiim7czqsca52bgrt6aiszsafq7jj4n3e7@ge6mfzcmnorl
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2025-04-23 18:00:27 +02:00
parent 5ea45f54c8
commit d5a2693f93
1 changed files with 2 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

3
fs/ext2/super.c
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@ -601,7 +601,8 @@ static int ext2_parse_param(struct fs_context *fc, struct fs_parameter *param)
case Opt_dax:
#ifdef CONFIG_FS_DAX
ext2_msg_fc(fc, KERN_WARNING,
"DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
"DAX enabled. Warning: DAX support in ext2 driver is deprecated"
" and will be removed at the end of 2025. Please use ext4 driver instead.");
ctx_set_mount_opt(ctx, EXT2_MOUNT_DAX);
#else
ext2_msg_fc(fc, KERN_INFO, "dax option not supported");