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bdev/compress: Cleanup vbdev_reduce_load_cb() by code reordering

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Reorder vbdev_redoce_load_cb() so that normal case comes first,
orphaned case comes second, and other error cases come at last.

This will simplify the code and improve readability a little.

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: Ieb79364f0b3996600e8ff7ec340101877527cac2
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/1477
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Shuhei Matsumoto 2020-03-26 17:15:20 +09:00 committed by Tomasz Zawadzki
parent 99e6fe4102
commit d5a0220ed1
1 changed files with 16 additions and 22 deletions
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34
module/bdev/compress/vbdev_compress.c
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@ -1754,19 +1754,18 @@ vbdev_reduce_load_cb(void *cb_arg, struct spdk_reduce_vol *vol, int reduce_errno
} }
meta_ctx->base_desc = NULL; meta_ctx->base_desc = NULL;
if (reduce_errno != 0 && reduce_errno != -ENOENT) { if (reduce_errno == 0) {
/* This error means it is not a compress disk. */ if (_set_pmd(meta_ctx) == false) {
if (reduce_errno != -EILSEQ) { SPDK_ERRLOG("could not find required pmd\n");
SPDK_ERRLOG("for vol %s, error %u\n",
spdk_bdev_get_name(meta_ctx->base_bdev), reduce_errno);
}
goto err; goto err;
} }
/* this status means that the vol could not be loaded because /* Update information following volume load. */
* the pmem file can't be found. meta_ctx->vol = vol;
*/ memcpy(&meta_ctx->params, spdk_reduce_vol_get_params(vol),
if (reduce_errno == -ENOENT) { sizeof(struct spdk_reduce_vol_params));
vbdev_compress_claim(meta_ctx);
} else if (reduce_errno == -ENOENT) {
if (_set_compbdev_name(meta_ctx)) { if (_set_compbdev_name(meta_ctx)) {
goto err; goto err;
} }
@ -1798,22 +1797,17 @@ vbdev_reduce_load_cb(void *cb_arg, struct spdk_reduce_vol *vol, int reduce_errno
meta_ctx->orphaned = true; meta_ctx->orphaned = true;
TAILQ_INSERT_TAIL(&g_vbdev_comp, meta_ctx, link); TAILQ_INSERT_TAIL(&g_vbdev_comp, meta_ctx, link);
spdk_bdev_module_examine_done(&compress_if); } else {
return; if (reduce_errno != -EILSEQ) {
SPDK_ERRLOG("for vol %s, error %u\n",
spdk_bdev_get_name(meta_ctx->base_bdev), reduce_errno);
} }
if (_set_pmd(meta_ctx) == false) {
SPDK_ERRLOG("could not find required pmd\n");
goto err; goto err;
} }
/* Update information following volume load. */
meta_ctx->vol = vol;
memcpy(&meta_ctx->params, spdk_reduce_vol_get_params(vol),
sizeof(struct spdk_reduce_vol_params));
vbdev_compress_claim(meta_ctx);
spdk_bdev_module_examine_done(&compress_if); spdk_bdev_module_examine_done(&compress_if);
return; return;
err: err:
free(meta_ctx); free(meta_ctx);
spdk_bdev_module_examine_done(&compress_if); spdk_bdev_module_examine_done(&compress_if);