exfat: support dynamic allocate bh for exfat_entry_set_cache

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In special cases, a file or a directory may occupied more than 19
directory entries, pre-allocating 3 bh is not enough. Such as
  - Support vendor secondary directory entry in the future.
  - Since file directory entry is damaged, the SecondaryCount
    field is bigger than 18.

So this commit supports dynamic allocation of bh.

Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

...

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Yuezhang Mo 2022-11-09 13:50:22 +08:00 • committed by Namjae Jeon

parent f83d8a3b53

commit a3ff29a95f

2 changed files with 19 additions and 1 deletions

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15

fs/exfat/dir.c

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5

fs/exfat/exfat_fs.h

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