diff options
| author | Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2023-11-23 18:47:16 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2023-12-15 22:27:02 +0300 |
| commit | aa6313e6ff2bfbf736a2739047bba355d8241584 (patch) | |
| tree | 4e07f80e35cecf3a8b9e0c0a1bd36c784cf250e9 /fs/btrfs/disk-io.c | |
| parent | cbf44cd93db3a470ead92a938210f41095cea562 (diff) | |
| download | linux-aa6313e6ff2bfbf736a2739047bba355d8241584.tar.xz | |
btrfs: zoned: don't clear dirty flag of extent buffer
One a zoned filesystem, never clear the dirty flag of an extent buffer,
but instead mark it as zeroout.
On writeout, when encountering a marked extent_buffer, zero it out.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 21c7835b46ec..7b55b59115e7 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -254,8 +254,13 @@ blk_status_t btree_csum_one_bio(struct btrfs_bio *bbio) if (WARN_ON_ONCE(bbio->bio.bi_iter.bi_size != eb->len)) return BLK_STS_IOERR; + /* + * If an extent_buffer is marked as EXTENT_BUFFER_ZONED_ZEROOUT, don't + * checksum it but zero-out its content. This is done to preserve + * ordering of I/O without unnecessarily writing out data. + */ if (test_bit(EXTENT_BUFFER_ZONED_ZEROOUT, &eb->bflags)) { - WARN_ON_ONCE(found_start != 0); + memzero_extent_buffer(eb, 0, eb->len); return BLK_STS_OK; } |