erofs: tidy up synchronous decompression

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- Get rid of `sbi->opt.max_sync_decompress_pages` since it's fixed as
   3 all the time;

 - Add Z_EROFS_MAX_SYNC_DECOMPRESS_BYTES in bytes instead of in pages,
   since for non-4K pages, 3-page limitation makes no sense;

 - Move `sync_decompress` to sbi to avoid unexpected remount impact;

 - Fold z_erofs_is_sync_decompress() into its caller;

 - Better description of sysfs entry `sync_decompress`.

Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

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This commit is contained in:

Gao Xiang 2026-01-12 11:43:30 +08:00

parent 06e5c34094

commit cc831ab336

5 changed files with 25 additions and 34 deletions

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14

Documentation/ABI/testing/sysfs-fs-erofs

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5

fs/erofs/internal.h

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3

fs/erofs/super.c

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2

fs/erofs/sysfs.c

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35

fs/erofs/zdata.c

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