JOURNAL_EXTEND(9) The Linux Journalling API JOURNAL_EXTEND(9)NAMEjournal_extend - extend buffer credits.
SYNOPSIS
int journal_extend(handle_t * handle, int nblocks);
ARGUMENTS
handle
handle to 'extend'
nblocks
nr blocks to try to extend by.
DESCRIPTION
Some transactions, such as large extends and truncates, can be done
atomically all at once or in several stages. The operation requests a
credit for a number of buffer modications in advance, but can extend
its credit if it needs more.
journal_extend tries to give the running handle more buffer credits. It
does not guarantee that allocation - this is a best-effort only. The
calling process MUST be able to deal cleanly with a failure to extend
here.
Return 0 on success, non-zero on failure.
return code < 0 implies an error return code > 0 implies normal
transaction-full status.
AUTHORS
Roger Gammans <rgammans@computer-surgery.co.uk>
Author.
Stephen Tweedie <sct@redhat.com>
Author.
COPYRIGHTKernel Hackers Manual 3.8. June 2014 JOURNAL_EXTEND(9)
