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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Christoph Hellwig
428e2976a5
segment_eq is only used to implement uaccess_kernel. Just open code uaccess_kernel in the arch uaccess headers and remove one layer of indirection. Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Acked-by: Linus Torvalds <[email protected]> Acked-by: Greentime Hu <[email protected]> Acked-by: Geert Uytterhoeven <[email protected]> Cc: Nick Hu <[email protected]> Cc: Vincent Chen <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Palmer Dabbelt <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Linus Torvalds <[email protected]>
19 lines
523 B
C
19 lines
523 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
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#ifndef __ASM_CSKY_SEGMENT_H
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#define __ASM_CSKY_SEGMENT_H
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typedef struct {
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unsigned long seg;
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} mm_segment_t;
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#define KERNEL_DS ((mm_segment_t) { 0xFFFFFFFF })
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#define USER_DS ((mm_segment_t) { 0x80000000UL })
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#define get_fs() (current_thread_info()->addr_limit)
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#define set_fs(x) (current_thread_info()->addr_limit = (x))
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#define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg)
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#endif /* __ASM_CSKY_SEGMENT_H */
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