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block: Add fallthrough markers to switch statements

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This patch suppresses gcc 7 warnings about falling through in switch
statements when building with W=1. From the gcc documentation: The
-Wimplicit-fallthrough=3 warning is enabled by -Wextra. See also
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gcc/Warning-Options.html.

Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Bart Van Assche 2017-06-21 09:40:11 -07:00 • committed by Jens Axboe
commit e29387ebd8
3 changed files with 4 additions and 1 deletions
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block/badblocks.c
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@ -533,6 +533,7 @@ ssize_t badblocks_store(struct badblocks *bb, const char *page, size_t len,
case 3:
if (newline != '\n')
return -EINVAL;
/* fall through */
case 2:
if (length <= 0)
return -EINVAL;