ext4: add a new helper to check if es must be kept

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In the extent status tree, we have extents which we can just drop without
issues and extents we must not drop - this depends on the extent's status
- currently ext4_es_is_delayed() extents must stay, others may be dropped.

A helper function is added to help determine if the current extent can
be dropped, although only ext4_es_is_delayed() extents cannot be dropped
currently.

Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230424033846.4732-3-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

...

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Baokun Li 2023-04-24 11:38:36 +08:00 • committed by Theodore Ts'o

parent de25d6e961

commit 9649eb18c6

1 changed files with 21 additions and 13 deletions

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fs/ext4/extents_status.c

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