1JOURNAL_GET_WRITE_AC(9)    The Linux Journalling API   JOURNAL_GET_WRITE_AC(9)
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NAME

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

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

14       handle
15           transaction to add buffer modifications to
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17       bh
18           bh to be used for metadata writes
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DESCRIPTION

21       Returns an error code or 0 on success.
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23       In full data journalling mode the buffer may be of type BJ_AsyncData,
24       because we're writeing a buffer which is also part of a shared mapping.
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AUTHORS

27       Roger Gammans <rgammans@computer-surgery.co.uk>
28           Author.
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30       Stephen Tweedie <sct@redhat.com>
31           Author.
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34Kernel Hackers Manual 3.10         June 2019           JOURNAL_GET_WRITE_AC(9)
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