erofs: introduce meta buffer operations

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In order to support subpage and folio for all uncompressed files,
introduce meta buffer descriptors, which can be effectively stored
on stack, in place of meta page operations.

This converts the uncompressed data path to meta buffers.

Link: https://lore.kernel.org/r/20220102040017.51352-2-hsiangkao@linux.alibaba.com
Reviewed-by: Liu Bo <bo.liu@linux.alibaba.com>
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 2022-01-02 12:00:13 +08:00

parent ab92184ff8

commit fdf80a4793

2 changed files with 90 additions and 21 deletions

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98

fs/erofs/data.c

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13

fs/erofs/internal.h

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