Messages in this thread | | | Date | Wed, 15 Sep 2021 13:02:29 -0400 | From | "Theodore Ts'o" <> | Subject | Re: [PATCH 3/6] EXT4: Remove ENOMEM/congestion_wait() loops. |
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On Wed, Sep 15, 2021 at 03:25:40PM +1000, NeilBrown wrote: > Adding gfp_mask to __ext4_journal_start_sb() make perfect sense. > There doesn't seem much point adding one to __ext4_journal_start(), > we can have ext4_journal_start_with_revoke() call > __ext4_journal_start_sb() directly. > But I cannot see what it doesn't already do that. > i.e. why have the inline __ext4_journal_start() at all? > Is it OK if I don't use that for ext4_journal_start_with_revoke()?
Sure. I think the only reason why we have __ext4_journal_start() as an inline function at all was for historical reasons. That is, we modified __ext4_journal_start() so that it took a struct super, and instead of changing all of the macros which called __ext4_journal_start(), we named it to be __ext4_journal_start_sb() and added the inline definition of __ext4_journal_start() to avoid changing all of the existing users of __ext4_journal_start().
So sure, it's fine not to use that for ext4_journal_start_with_revoke(), and we probably should clean up the use of __ext4_journal_start() at some point. That's unrelated to your work, though.
Cheers,
- Ted
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