exfat: add cache option for __exfat_ent_get

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When multiple entries are obtained consecutively, these entries are mostly
stored adjacent to each other. this patch introduces a "last" parameter to
cache the last opened buffer head, and reuse it when possible, which
reduces the number of sb_bread() calls.

When the passed parameter "last" is NULL, it means cache option is
disabled, the behavior unchanged as it was.

Signed-off-by: Chi Zhiling <chizhiling@kylinos.cn>
Reviewed-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

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Chi Zhiling 2026-01-14 20:12:37 +08:00 • committed by Namjae Jeon

parent 0914882bdd

commit 967288e9a6

1 changed files with 13 additions and 7 deletions

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fs/exfat/fatent.c

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