[PATCH] btrfs: compression: update the comment for alloc_compressed_bio()
From: Qu Wenruo <hidden>
Date: 2021-10-05 06:23:35
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
This comment will include all parameters, not only the new @next_stripe_start. Signed-off-by: Qu Wenruo <redacted> --- fs/btrfs/compression.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 69a19d51fa35..cba82fdae7e5 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c@@ -438,9 +438,19 @@ static blk_status_t submit_compressed_bio(struct btrfs_fs_info *fs_info, } /* - * To allocate a compressed_bio, which will be used to read/write on-disk data. + * To allocate a compressed_bio, which will be used to read/write on-disk + * (aka, compressed) data. * - * @next_stripe_start: Disk bytenr of next stripe start + * @cb: The compressed_bio structure, which records all the needed + * info to bind the compressed data to the uncompressed page cache. + * @disk_byten: The logical bytenr where the compressed data will be read from + * or written to. + * @endio_func: The endio function to call after the IO for compressed data is + * finished. + * @next_stripe_start: + * The Return value of Logical bytenr of where next stripe start. + * To inform the caller to only fill the bio up to the stripe + * boundary. */ static struct bio *alloc_compressed_bio(struct compressed_bio *cb, u64 disk_bytenr, unsigned int opf, bio_end_io_t endio_func,
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2.33.0