David Teigland 2c9bb67604 scanning: improve filtering control ... Filtering in label_scan was controlled indirectly by the fact that bcache was not yet set up when label_scan first ran. The result is that filters that needed data would not run and would return -EAGAIN, which would result in the dev flag FILTER_AFTER_SCAN being set. After the dev header was read for checking the label, filters would be rechecked because of FILTER_AFTER_SCAN. All filters would be checked this time because bcache was now set up, and the filters needing data would largely use data already scanned for reading the label. This design worked but is hard to adjust for future cases where bcache is already set up. Replace this method (based on setting up bcache, or not) with a new cmd flag filter_nodata_only. When this flag is set filters that need data will not run. This allows the same label_scan behavior when bcache has been set up. There are no expected changes in behavior.		2020-10-21 16:24:16 -05:00
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hints.c	hints: enhance debug messages	2020-09-16 15:01:10 -05:00
hints.h	hints: free hint list in error exit path	2020-03-03 12:25:34 -06:00
label.c	scanning: improve filtering control	2020-10-21 16:24:16 -05:00
label.h	metadata: open rw fd before closing ro fd	2020-09-18 15:10:11 -05:00