/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __FS_CEPH_PAGELIST_H #define __FS_CEPH_PAGELIST_H #include <asm/byteorder.h> #include <linux/refcount.h> #include <linux/list.h> #include <linux/types.h> struct ceph_pagelist { struct list_head head; void *mapped_tail; size_t length; size_t room; struct list_head free_list; size_t num_pages_free; refcount_t refcnt; }; struct ceph_pagelist_cursor { struct ceph_pagelist *pl; /* pagelist, for error checking */ struct list_head *page_lru; /* page in list */ size_t room; /* room remaining to reset to */ }; static inline void ceph_pagelist_init(struct ceph_pagelist *pl) { INIT_LIST_HEAD(&pl->head); pl->mapped_tail = NULL; pl->length = 0; pl->room = 0; INIT_LIST_HEAD(&pl->free_list); pl->num_pages_free = 0; refcount_set(&pl->refcnt, 1); } extern void ceph_pagelist_release(struct ceph_pagelist *pl); extern int ceph_pagelist_append(struct ceph_pagelist *pl, const void *d, size_t l); extern int ceph_pagelist_reserve(struct ceph_pagelist *pl, size_t space); extern int ceph_pagelist_free_reserve(struct ceph_pagelist *pl); extern void ceph_pagelist_set_cursor(struct ceph_pagelist *pl, struct ceph_pagelist_cursor *c); extern int ceph_pagelist_truncate(struct ceph_pagelist *pl, struct ceph_pagelist_cursor *c); static inline int ceph_pagelist_encode_64(struct ceph_pagelist *pl, u64 v) { __le64 ev = cpu_to_le64(v); return ceph_pagelist_append(pl, &ev, sizeof(ev)); } static inline int ceph_pagelist_encode_32(struct ceph_pagelist *pl, u32 v) { __le32 ev = cpu_to_le32(v); return ceph_pagelist_append(pl, &ev, sizeof(ev)); } static inline int ceph_pagelist_encode_16(struct ceph_pagelist *pl, u16 v) { __le16 ev = cpu_to_le16(v); return ceph_pagelist_append(pl, &ev, sizeof(ev)); } static inline int ceph_pagelist_encode_8(struct ceph_pagelist *pl, u8 v) { return ceph_pagelist_append(pl, &v, 1); } static inline int ceph_pagelist_encode_string(struct ceph_pagelist *pl, char *s, size_t len) { int ret = ceph_pagelist_encode_32(pl, len); if (ret) return ret; if (len) return ceph_pagelist_append(pl, s, len); return 0; } #endif
Name | Type | Size | Permission | Actions |
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auth.h | File | 4.85 KB | 0644 |
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buffer.h | File | 833 B | 0644 |
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ceph_debug.h | File | 907 B | 0644 |
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ceph_features.h | File | 8.53 KB | 0644 |
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ceph_frag.h | File | 1.97 KB | 0644 |
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ceph_fs.h | File | 25.36 KB | 0644 |
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ceph_hash.h | File | 472 B | 0644 |
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cls_lock_client.h | File | 1.59 KB | 0644 |
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debugfs.h | File | 769 B | 0644 |
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decode.h | File | 9.06 KB | 0644 |
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libceph.h | File | 9.48 KB | 0644 |
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mdsmap.h | File | 1.62 KB | 0644 |
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messenger.h | File | 9.04 KB | 0644 |
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mon_client.h | File | 3.82 KB | 0644 |
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msgpool.h | File | 775 B | 0644 |
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msgr.h | File | 5.65 KB | 0644 |
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osd_client.h | File | 14.35 KB | 0644 |
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osdmap.h | File | 8.34 KB | 0644 |
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pagelist.h | File | 2.11 KB | 0644 |
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rados.h | File | 16.94 KB | 0644 |
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string_table.h | File | 1.3 KB | 0644 |
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types.h | File | 547 B | 0644 |
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