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reduce: allocate scratch buffer space for requests

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Each request will need a scratch buffer of size
chunk_size.  This is needed for read/modify/write
operations when only part of a chunk is written.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ided33f1e9ae18dd9a5de45f53f0a994a6f260b17

Reviewed-on: https://review.gerrithub.io/434111
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Jim Harris 2018-10-02 06:21:36 -07:00
parent 6a6c6bf366
commit d465a21a30
1 changed files with 12 additions and 1 deletions
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13
lib/reduce/reduce.c
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@ -75,6 +75,7 @@ struct spdk_reduce_pm_file {
};
struct spdk_reduce_vol_request {
uint8_t *buf;
TAILQ_ENTRY(spdk_reduce_vol_request) tailq;
};
@ -92,6 +93,7 @@ struct spdk_reduce_vol {
struct spdk_reduce_vol_request *request_mem;
TAILQ_HEAD(, spdk_reduce_vol_request) requests;
uint8_t *bufspace;
};
/*
@ -236,13 +238,21 @@ _allocate_vol_requests(struct spdk_reduce_vol *vol)
struct spdk_reduce_vol_request *req;
int i;
vol->bufspace = spdk_dma_malloc(REDUCE_NUM_VOL_REQUESTS * vol->params.chunk_size, 64, NULL);
if (vol->bufspace == NULL) {
return -ENOMEM;
}
vol->request_mem = calloc(REDUCE_NUM_VOL_REQUESTS, sizeof(*req));
if (vol->request_mem == NULL) {
free(vol->bufspace);
return -ENOMEM;
}
for (i = 0; i < REDUCE_NUM_VOL_REQUESTS; i++) {
TAILQ_INSERT_HEAD(&vol->requests, &vol->request_mem[i], tailq);
req = &vol->request_mem[i];
TAILQ_INSERT_HEAD(&vol->requests, req, tailq);
req->buf = vol->bufspace + i * vol->params.chunk_size;
}
return 0;
@ -261,6 +271,7 @@ _init_load_cleanup(struct spdk_reduce_vol *vol, struct reduce_init_load_ctx *ctx
spdk_bit_array_free(&vol->allocated_chunk_maps);
spdk_bit_array_free(&vol->allocated_backing_io_units);
free(vol->request_mem);
spdk_dma_free(vol->bufspace);
free(vol);
}
}