修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/fs/stack.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 #include <linux/export.h>
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 #include <linux/fs.h>
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 #include <linux/fs_stack.h>
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@@ -21,11 +22,10 @@
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 	i_size = i_size_read(src);
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 	/*
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-	 * But if CONFIG_LBDAF (on 32-bit), we ought to make an effort to
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-	 * keep the two halves of i_blocks in sync despite SMP or PREEMPT -
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-	 * though stat's generic_fillattr() doesn't bother, and we won't be
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-	 * applying quotas (where i_blocks does become important) at the
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-	 * upper level.
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+	 * But on 32-bit, we ought to make an effort to keep the two halves of
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+	 * i_blocks in sync despite SMP or PREEMPTION - though stat's
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+	 * generic_fillattr() doesn't bother, and we won't be applying quotas
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+	 * (where i_blocks does become important) at the upper level.
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 	 *
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 	 * We don't actually know what locking is used at the lower level;
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 	 * but if it's a filesystem that supports quotas, it will be using
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@@ -38,15 +38,15 @@
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 		spin_unlock(&src->i_lock);
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 	/*
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-	 * If CONFIG_SMP or CONFIG_PREEMPT on 32-bit, it's vital for
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+	 * If CONFIG_SMP or CONFIG_PREEMPTION on 32-bit, it's vital for
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 	 * fsstack_copy_inode_size() to hold some lock around
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 	 * i_size_write(), otherwise i_size_read() may spin forever (see
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 	 * include/linux/fs.h).  We don't necessarily hold i_mutex when this
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 	 * is called, so take i_lock for that case.
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 	 *
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-	 * And if CONFIG_LBDAF (on 32-bit), continue our effort to keep the
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-	 * two halves of i_blocks in sync despite SMP or PREEMPT: use i_lock
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-	 * for that case too, and do both at once by combining the tests.
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+	 * And if on 32-bit, continue our effort to keep the two halves of
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+	 * i_blocks in sync despite SMP or PREEMPTION: use i_lock for that case
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+	 * too, and do both at once by combining the tests.
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 	 *
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 	 * There is none of this locking overhead in the 64-bit case.
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 	 */