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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/err.h
4 #include <linux/compiler.h>
9 * Kernel pointers have redundant information, so we can use a
10 * scheme where we can return either an error code or a dentry
11 * pointer with the same return value.
13 * This should be a per-architecture thing, to allow different
14 * error and pointer decisions.
16 #define IS_ERR_VALUE(x) unlikely((x) > (unsigned long)-1000L)
18 static inline void *ERR_PTR(long error
)
20 return (void *) error
;
23 static inline long PTR_ERR(const void *ptr
)
28 static inline long IS_ERR(const void *ptr
)
30 return IS_ERR_VALUE((unsigned long)ptr
);
33 #endif /* _LINUX_ERR_H */