Re: reiserfs - difference between a commit and a transaction

[Nikita Danilov]

Micha Feigin writes:
 > I am trying to do some work on reiserfs to make it laptop-mode
 > compliant. After looking at the code because it was still noisy after I
 > thought I told correctly to be quite, raised a question that I was
 > hoping someone can clarify for me.
 > 
 > Reiserfs has both a transaction and a commit and I was wondering what
 > is which.

Transaction is a sequence of file system modifications that (by the
virtue of file system implementation) is bound to either be completed as
a whole or be aborted as a whole (this is called "atomicity").

Commit is a certain operation performed during transaction life-time to
implement its atomicity.

 > 
 > (I am mostly interested in this from the point of what max_trans_age
 > and max_commit_age affect)

Take a look at the "commit" mount option of reiserfs.

 > 
 > Thanks

Nikita.
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