f2fs: clean up i_compress_flag and i_compress_level usage

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.i_compress_level was introduced by commit 3fde13f817 ("f2fs: compress:
support compress level"), but never be used.

This patch updates as below:
- load high 8-bits of on-disk .i_compress_flag to in-memory .i_compress_level
- load low 8-bits of on-disk .i_compress_flag to in-memory .i_compress_flag
- change type of in-memory .i_compress_flag from unsigned short to unsigned
char.

w/ above changes, we can avoid unneeded bit shift whenever during
.init_compress_ctx(), and shrink size of struct f2fs_inode_info.

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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This commit is contained in:

Chao Yu 2023-01-28 18:30:11 +08:00 • committed by Jaegeuk Kim

parent 2eae077e6e

commit b90e5086df

3 changed files with 19 additions and 12 deletions

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8

fs/f2fs/compress.c

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7

fs/f2fs/f2fs.h

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16

fs/f2fs/inode.c

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