The Linux Journalling API
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journal_get_write_access

Name

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

Synopsis

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

Arguments

handle

transaction to add buffer modifications to

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.

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