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* ceph: buffer decoding helpersSage Weil2010-02-101-0/+2
| | | | | | | | Helper for decoding into a ceph_buffer, and other misc decoding helpers we will need. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: simplify ceph_buffer interfaceSage Weil2009-12-071-17/+3
| | | | | | | | | We never allocate the ceph_buffer and buffer separtely, so use a single constructor. Disallow put on NULL buffer; make the caller check. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: use kref for ceph_bufferSage Weil2009-12-071-11/+7
| | | | Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: ref counted bufferSage Weil2009-10-061-0/+55
struct ceph_buffer is a simple ref-counted buffer. We transparently choose between kmalloc for small buffers and vmalloc for large ones. This is currently used only for allocating memory for xattr data. Signed-off-by: Sage Weil <sage@newdream.net>