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Use fallthrough macro

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As of the Linux 5.9 kernel a fallthrough macro has been added which
should be used to anotate all intentional fallthrough paths.  Once
all of the kernel code paths have been updated to use fallthrough
the -Wimplicit-fallthrough option will because the default.  To
avoid warnings in the OpenZFS code base when this happens apply
the fallthrough macro.

Additional reading: https://lwn.net/Articles/794944/

Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #12441
This commit is contained in:
Brian Behlendorf
2021-09-14 09:17:54 -07:00
committed by GitHub
parent 7443299fe0
commit 6954c22f35
37 changed files with 88 additions and 40 deletions
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module/zfs/abd.c
+4 -4
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@@ -1066,10 +1066,10 @@ abd_raidz_gen_iterate(abd_t **cabds, abd_t *dabd,
switch (parity) {
case 3:
len = MIN(caiters[2].iter_mapsize, len);
/* falls through */
fallthrough;
case 2:
len = MIN(caiters[1].iter_mapsize, len);
/* falls through */
fallthrough;
case 1:
len = MIN(caiters[0].iter_mapsize, len);
}
@@ -1179,11 +1179,11 @@ abd_raidz_rec_iterate(abd_t **cabds, abd_t **tabds,
case 3:
len = MIN(xiters[2].iter_mapsize, len);
len = MIN(citers[2].iter_mapsize, len);
/* falls through */
fallthrough;
case 2:
len = MIN(xiters[1].iter_mapsize, len);
len = MIN(citers[1].iter_mapsize, len);
/* falls through */
fallthrough;
case 1:
len = MIN(xiters[0].iter_mapsize, len);
len = MIN(citers[0].iter_mapsize, len);