TYPEDEF HANDLE_T(9)                 The Linux Journalling API                 TYPEDEF HANDLE_T(9)



NAME
       typedef_handle_t - The handle_t type represents a single atomic update being performed by
       some process.

SYNOPSIS
       typedef handle_t;

DESCRIPTION
       All filesystem modifications made by the process go through this handle. Recursive
       operations (such as quota operations) are gathered into a single update.

       The buffer credits field is used to account for journaled buffers being modified by the
       running process. To ensure that there is enough log space for all outstanding operations,
       we need to limit the number of outstanding buffers possible at any time. When the
       operation completes, any buffer credits not used are credited back to the transaction, so
       that at all times we know how many buffers the outstanding updates on a transaction might
       possibly touch.

       This is an opaque datatype.

AUTHORS
       Roger Gammans <rgammans AT computer-surgery.uk>
           Author.

       Stephen Tweedie <sct AT redhat.com>
           Author.

COPYRIGHT
Kernel Hackers Manual                      January 2017                       TYPEDEF HANDLE_T(9)