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.