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xfs: Fix multiple fall-through warnings for Clang

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In preparation to enable -Wimplicit-fallthrough for Clang, fix
the following warnings by replacing /* fallthrough */ comments,
and its variants, with the new pseudo-keyword macro fallthrough:

fs/xfs/libxfs/xfs_attr.c:487:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
fs/xfs/libxfs/xfs_attr.c:500:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
fs/xfs/libxfs/xfs_attr.c:532:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
fs/xfs/libxfs/xfs_attr.c:594:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
fs/xfs/libxfs/xfs_attr.c:607:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
fs/xfs/libxfs/xfs_attr.c:1410:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
fs/xfs/libxfs/xfs_attr.c:1445:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
fs/xfs/libxfs/xfs_attr.c:1473:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]

Notice that Clang doesn't recognize /* fallthrough */ comments as
implicit fall-through markings, so in order to globally enable
-Wimplicit-fallthrough for Clang, these comments need to be
replaced with fallthrough; in the whole codebase.

Link: https://github.com/KSPP/linux/issues/115
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2021-06-15 09:09:14 -05:00
parent e73f0f0ee7
commit 5937e00017
1 changed files with 8 additions and 8 deletions
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16
fs/xfs/libxfs/xfs_attr.c
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@ -483,7 +483,7 @@ xfs_attr_set_iter(
if (error)
return error;
/* fallthrough */
fallthrough;
case XFS_DAS_RM_LBLK:
/* Set state in case xfs_attr_rmtval_remove returns -EAGAIN */
dac->dela_state = XFS_DAS_RM_LBLK;
@ -496,7 +496,7 @@ xfs_attr_set_iter(
return -EAGAIN;
}
/* fallthrough */
fallthrough;
case XFS_DAS_RD_LEAF:
/*
* This is the last step for leaf format. Read the block with
@ -528,7 +528,7 @@ xfs_attr_set_iter(
return error;
}
/* fallthrough */
fallthrough;
case XFS_DAS_ALLOC_NODE:
/*
* If there was an out-of-line value, allocate the blocks we
@ -590,7 +590,7 @@ xfs_attr_set_iter(
if (error)
return error;
/* fallthrough */
fallthrough;
case XFS_DAS_RM_NBLK:
/* Set state in case xfs_attr_rmtval_remove returns -EAGAIN */
dac->dela_state = XFS_DAS_RM_NBLK;
@ -603,7 +603,7 @@ xfs_attr_set_iter(
return -EAGAIN;
}
/* fallthrough */
fallthrough;
case XFS_DAS_CLR_FLAG:
/*
* The last state for node format. Look up the old attr and
@ -1406,7 +1406,7 @@ xfs_attr_remove_iter(
state = dac->da_state;
}
/* fallthrough */
fallthrough;
case XFS_DAS_RMTBLK:
dac->dela_state = XFS_DAS_RMTBLK;
@ -1441,7 +1441,7 @@ xfs_attr_remove_iter(
return -EAGAIN;
}
/* fallthrough */
fallthrough;
case XFS_DAS_RM_NAME:
/*
* If we came here fresh from a transaction roll, reattach all
@ -1469,7 +1469,7 @@ xfs_attr_remove_iter(
return -EAGAIN;
}
/* fallthrough */
fallthrough;
case XFS_DAS_RM_SHRINK:
/*
* If the result is small enough, push it all into the inode.