The Linux Journalling API | ||
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journal for operation
to try and free
'IO' mode for try_to_free_buffers
For all the buffers on this page, if they are fully written out ordered data, move them onto BUF_CLEAN so try_to_free_buffers can reap them.
This function returns non-zero if we wish try_to_free_buffers to be called. We do this if the page is releasable by try_to_free_buffers. We also do it if the page has locked or dirty buffers and the caller wants us to perform sync or async writeout.
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