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JBD2_JOURNAL_GET_WRI(9) The Linux Journalling API JBD2_JOURNAL_GET_WRI(9)

NAME

jbd2_journal_get_write_access - notify intent to modify a buffer for metadata (not data) update.

SYNOPSIS

int jbd2_journal_get_write_access(handle_t * handle, struct buffer_head * bh);

ARGUMENTS

handle_t * handle

transaction to add buffer modifications to

struct buffer_head * bh

bh to be used for metadata writes

DESCRIPTION

Returns an error code or 0 on success.

In full data journalling mode the buffer may be of type BJ_AsyncData, because we're writeing a buffer which is also part of a shared mapping.

AUTHORS

Roger Gammans <rgammans@computer-surgery.co.uk>

Author.

Stephen Tweedie <sct@redhat.com>

Author.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12