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a0c171328f
Needed by drm-kmod. Reviewed by: hselasky Obtained from: OpenBSD Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D35941
69 lines
1.1 KiB
C
69 lines
1.1 KiB
C
/* Public domain. */
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#ifndef _LINUXKPI_LINUX_PAGEVEC_H_
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#define _LINUXKPI_LINUX_PAGEVEC_H_
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <linux/pagemap.h>
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#define PAGEVEC_SIZE 15
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struct pagevec {
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uint8_t nr;
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struct vm_page *pages[PAGEVEC_SIZE];
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};
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static inline unsigned int
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pagevec_space(struct pagevec *pvec)
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{
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return PAGEVEC_SIZE - pvec->nr;
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}
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static inline void
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pagevec_init(struct pagevec *pvec)
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{
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pvec->nr = 0;
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}
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static inline void
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pagevec_reinit(struct pagevec *pvec)
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{
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pvec->nr = 0;
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}
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static inline unsigned int
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pagevec_count(struct pagevec *pvec)
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{
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return pvec->nr;
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}
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static inline unsigned int
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pagevec_add(struct pagevec *pvec, struct vm_page *page)
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{
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pvec->pages[pvec->nr++] = page;
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return PAGEVEC_SIZE - pvec->nr;
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}
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static inline void
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__pagevec_release(struct pagevec *pvec)
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{
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release_pages(pvec->pages, pagevec_count(pvec));
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pagevec_reinit(pvec);
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}
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static inline void
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pagevec_release(struct pagevec *pvec)
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{
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if (pagevec_count(pvec))
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__pagevec_release(pvec);
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}
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static inline void
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check_move_unevictable_pages(struct pagevec *pvec)
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{
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}
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#endif /* _LINUXKPI_LINUX_PAGEVEC_H_ */
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