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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/statfs.h
..
..
@@ -40,5 +40,14 @@
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 #define ST_NOATIME	0x0400	/* do not update access times */
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 #define ST_NODIRATIME	0x0800	/* do not update directory access times */
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 #define ST_RELATIME	0x1000	/* update atime relative to mtime/ctime */
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+#define ST_NOSYMFOLLOW	0x2000	/* do not follow symlinks */
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+
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+struct dentry;
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+extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid);
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+
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+static inline __kernel_fsid_t u64_to_fsid(u64 v)
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+{
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+	return (__kernel_fsid_t){.val = {(u32)v, (u32)(v>>32)}};
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+}
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 #endif