f2fs: avoid unnecessary reads in f2fs_update_meta_block()

When the packed SSA feature is enabled, f2fs_update_meta_block()
uses f2fs_get_meta_cache_retry(), which reads the target block from
disk if the cache entry is not uptodate.

However, f2fs_update_meta_block() overwrites the entire filesystem
block with memcpy(), so the existing contents are not needed.
Partial updates to packed SSA blocks are handled separately in
write_sum_block().

Use f2fs_grab_meta_cache() unconditionally to avoid reading blocks
that will be fully overwritten. Also remove the error check, since
f2fs_grab_meta_cache() retries allocation failures internally and
does not return an error pointer.

Signed-off-by: Seongjae Jeong <jsjlee1020@gmail.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

0 files changed, 0 insertions, 0 deletions