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39 lines
833 B
39 lines
833 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __FS_CEPH_BUFFER_H |
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#define __FS_CEPH_BUFFER_H |
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#include <linux/kref.h> |
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#include <linux/mm.h> |
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#include <linux/vmalloc.h> |
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#include <linux/types.h> |
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#include <linux/uio.h> |
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/* |
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* a simple reference counted buffer. |
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* |
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* use kmalloc for smaller sizes, vmalloc for larger sizes. |
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*/ |
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struct ceph_buffer { |
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struct kref kref; |
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struct kvec vec; |
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size_t alloc_len; |
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}; |
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extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp); |
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extern void ceph_buffer_release(struct kref *kref); |
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static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b) |
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{ |
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kref_get(&b->kref); |
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return b; |
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} |
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static inline void ceph_buffer_put(struct ceph_buffer *b) |
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{ |
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if (b) |
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kref_put(&b->kref, ceph_buffer_release); |
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} |
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extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end); |
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#endif
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