{"id":404,"date":"2023-07-26T14:01:00","date_gmt":"2023-07-26T06:01:00","guid":{"rendered":"https:\/\/blog.taiyang.space\/?p=404"},"modified":"2023-07-26T14:01:01","modified_gmt":"2023-07-26T06:01:01","slug":"l9-%e7%94%9f%e7%a3%81%e7%9b%98%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/blog.taiyang.space\/?p=404","title":{"rendered":"L9-\u751f\u78c1\u76d8\u7684\u4f7f\u7528"},"content":{"rendered":"<h2 id=\"1\u78c1\u76d8\u7684\u7ed3\u6784\">1\u3001\u78c1\u76d8\u7684\u7ed3\u6784<\/h2>\n<p>\u4ee5\u4e0b\u4e09\u5e45\u56fe\u7247\u4e3a\u78c1\u76d8\u7ed3\u6784\u7684\u7b80\u56fe\uff1a<br \/>\n<img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250626.png\" referrerpolicy=\"no-referrer\" alt=\"img\"><\/p>\n<p>\u78c1\u76d8\u7684\u4e2d\u95f4\u6709\u4e00\u4e2a\u4e3b\u8f74\uff0c\u5b83\u53ef\u4ee5\u5e26\u52a8\u76d8\u7247\u8f6c\u52a8\uff0c\u8ba9\u6240\u6709\u7684\u76d8\u7247\u90fd\u56f4\u7ed5\u7740\u4e3b\u8f74\u65cb\u8f6c\u3002\u6709\u4e9b\u78c1\u76d8\u7684\u76d8\u7247\u4e0a\u4f1a\u6709\u4e24\u4e2a\u76d8\u9762\uff0c\u5373\u4e0a\u4e0b\u4e24\u4e2a\u76d8\u9762\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250631.png\" referrerpolicy=\"no-referrer\" alt=\"img\"><\/p>\n<p>\u76d8\u9762\u88ab\u5212\u5206\u6210\u8bb8\u591a\u4e2a\u72ed\u7a84\u7684\u540c\u5fc3\u5706\u73af\uff0c\u6bcf\u4e00\u4e2a\u540c\u5fc3\u5706\u73af\u90fd\u88ab\u79f0\u4e3a\u4e00\u4e2a\u78c1\u9053\uff0c\u78c1\u9053\u7684\u7f16\u53f7\u662f\u7531\u5916\u5411\u5185\u7684\uff0c\u5373\u6700\u5916\u5708\u7684\u4e3a0\u53f7\u78c1\u9053\u3002 \u5c06\u76d8\u9762\u770b\u6210\u4e00\u4e2a\u5706\u5f62\uff0c\u53ef\u4ee5\u5728\u76d8\u9762\u4e0a\u5212\u5206\u51fa\u591a\u4e2a\u76f8\u540c\u7684\u6247\u5f62\uff0c\u5206\u914d\u5230\u6bcf\u4e00\u4e2a\u78c1\u9053\u4e0a\u7684\u5f27\u6bb5\u88ab\u79f0\u4e3a\u6247\u533a\u3002\u53ef\u4ee5\u770b\u51fa\u6bcf\u4e00\u4e2a\u78c1\u9053\u4e0a\u7684\u6247\u533a\u6570\u662f\u76f8\u540c\u7684\u3002\u6ce8\u610f\u4e0a\u56fe\u53f3\u534a\u8fb9\u7684\u6ce8\u89e3\u3002 \u6bcf\u4e00\u4e2a\u78c1\u9053\u4e0a\u7684\u6247\u533a\u6570\u76ee\u76f8\u540c\uff0c\u4e14\u6bcf\u4e2a\u6247\u533a\u7684\u5927\u5c0f\u90fd\u4e3a512\u5b57\u8282\uff0c\u4f46\u5916\u5708\u7684\u6247\u533a\u5360\u7528\u7684\u7269\u7406\u9762\u79ef\u66f4\u5927\uff0c\u56e0\u6b64\u5916\u5708\u7684\u78c1\u9053\u4e0a\u7684\u6247\u533a\u5b58\u5728\u66f4\u591a\u7684\u6d6a\u8d39\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250623.png\" referrerpolicy=\"no-referrer\" alt=\"img\"><\/p>\n<p>\u76d8\u7247\u65c1\u8fb9\u4e3a\u673a\u68b0\u78c1\u81c2\uff0c\u7528\u4e8e\u79fb\u52a8\u78c1\u5934\u3002\u4e0a\u56fe\u4e2d\u7528\u84dd\u8272\u6807\u51fa\u7684\u5706\u67f1\u4f53\u4e3a\u4e00\u4e2a\u67f1\u9762\uff0c\u4f8b\u5982\u6240\u6709\u76d8\u9762\u76840\u78c1\u9053\u53ef\u4ee5\u7ec4\u6210\u4e00\u4e2a\u67f1\u9762\u3002\u53ea\u8981\u5f80\u78c1\u76d8\u63a7\u5236\u5668\u4e2d\u5199\u67f1\u9762\uff08cylinder\uff09\u3001\u78c1\u5934\uff08head\uff09\u3001\u6247\u533a\uff08sector\uff09\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u78c1\u76d8\u4e86\u3002<\/p>\n<p>\u6247\u533a\u53f7\u7684\u6392\u5217\u4f1a\u5f71\u54cd\u78c1\u76d8\u7684\u8bbf\u95ee\u901f\u5ea6\uff0cLinux0.11\u4f7f\u7528\u7684\u78c1\u76d8\u7684\u6247\u533a\u53f7\u6392\u5217\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250638.png\" referrerpolicy=\"no-referrer\" alt=\"img\"><\/p>\n<p>\u4ece\u56fe\u4e2d\u53ef\u4ee5\u770b\u51fa\uff1a\u6247\u533a\u53f7\u662f\u4ece\u4e00\u4e2a\u67f1\u9762\u6700\u4e0a\u9762\u7684\u4e00\u4e2a\u78c1\u9053\u4ece\u4e0a\u5f80\u4e0b\u5f00\u59cb\u6392\u5217\uff0c\u82e5\u4e00\u4e2a\u78c1\u9053\u4e0a\u67097\u4e2a\u6247\u533a\uff0c\u6700\u4e0a\u9762\u78c1\u9053\u7684\u6247\u533a\u6392\u5217\u4e3a0\uff0c1\uff0c2\uff0c3\uff0c4\uff0c5\uff0c6\uff1b7\u53f7\u6247\u533a\u5728\u4e0b\u9762\u4e00\u4e2a\u78c1\u9053\uff0c\u4e14\u4f4d\u4e8e0\u53f7\u6247\u533a\u7684\u6b63\u4e0b\u65b9\u3002\u4e0b\u4e00\u4e2a\u67f1\u9762\u7684\u6247\u533a\u53f7\u4ece\u4e0a\u4e00\u4e2a\u67f1\u9762\u7ed3\u675f\u7684\u6247\u533a\u53f7+1\u5f00\u59cb\u6392\u5217\uff0c\u5373\u6247\u533a\u53f7\u7684\u6392\u5217\u662f\u8fde\u7eed\u7684\u3002\u8fd9\u6837\u6570\u636e\u7684\u8bfb\u5199\u5c31\u53d8\u4e3a\u4e86\u6309\u67f1\u9762\u8fdb\u884c\u7684\uff0c\u800c\u4e0d\u662f\u6309\u76d8\u9762\u8fdb\u884c\u3002<\/p>\n<blockquote><p>\u78c1\u76d8\u5bb9\u91cf = \u76d8\u9762\u6570 \u00d7 \u67f1\u9762\u6570 \u00d7 \u6247\u533a\u6570 \u00d7 512\u5b57\u8282; \/\/\u67f1\u9762\u6570\u4e5f\u53ef\u4ee5\u7406\u89e3\u4e3a\u4e00\u4e2a\u76d8\u9762\u4e0a\u7684\u78c1\u9053\u6570<\/p>\n<p>\u78c1\u76d8\u8bbf\u95ee\u65f6\u95f4 = \u5199\u5165\u63a7\u5236\u5668\u65f6\u95f4 + \u5bfb\u9053\u65f6\u95f4 + \u65cb\u8f6c\u5ef6\u8fdf\u65f6\u95f4 + \u4f20\u8f93\u65f6\u95f4<\/p><\/blockquote>\n<p>\u786c\u76d8\u8bfb\u53d6\u6570\u636e\u65f6\uff0c\u8bfb\u5199\u78c1\u5934\u6cbf\u5f84\u5411\u79fb\u52a8\uff0c\u79fb\u5230\u8981\u8bfb\u53d6\u7684\u6247\u533a\u6240\u5728\u78c1\u9053\u7684\u4e0a\u65b9\uff0c\u8fd9\u6bb5\u65f6\u95f4\u79f0\u4e3a\u5bfb\u9053\u65f6\u95f4(seek time)\u3002\u56e0\u8bfb\u5199\u78c1\u5934\u7684\u8d77\u59cb\u4f4d\u7f6e\u4e0e\u76ee\u6807\u4f4d\u7f6e\u4e4b\u95f4\u7684\u8ddd\u79bb\u4e0d\u540c\uff0c\u5bfb\u9053\u65f6\u95f4\u4e5f\u4e0d\u540c\u3002\u78c1\u5934\u5230\u8fbe\u6307\u5b9a\u78c1\u9053\u540e\uff0c\u7136\u540e\u901a\u8fc7\u76d8\u7247\u7684\u65cb\u8f6c\uff0c\u4f7f\u5f97\u8981\u8bfb\u53d6\u7684\u6247\u533a\u8f6c\u5230\u8bfb\u5199\u78c1\u5934\u7684\u4e0b\u65b9\uff0c\u8fd9\u6bb5\u65f6\u95f4\u79f0\u4e3a\u65cb\u8f6c\u5ef6\u8fdf\u65f6\u95f4(rotational latencytime)\u3002\u7136\u540e\u518d\u8bfb\u5199\u6570\u636e\uff0c\u8bfb\u5199\u6570\u636e\u4e5f\u9700\u8981\u65f6\u95f4\uff0c\u8fd9\u6bb5\u65f6\u95f4\u79f0\u4e3a\u4f20\u8f93\u65f6\u95f4\uff08transfer time\uff09<\/p>\n<h2 id=\"2\u751f\u78c1\u76d8\u7684\u4f7f\u7528\">2\u3001\u751f\u78c1\u76d8\u7684\u4f7f\u7528<\/h2>\n<p>\u76f4\u63a5\u901a\u8fc7\u4e09\u7ef4\u53c2\u6570\uff08\u67f1\u9762\u3001\u78c1\u5934\u3001\u6247\u533a\uff09\u4f7f\u7528\u78c1\u76d8\u662f\u975e\u5e38\u9ebb\u70e6\u7684\u3002\u4ece\u6247\u533a\u53f7\u5230\u76d8\u5757\u53f7\uff0c\u662f\u5bf9\u78c1\u76d8\u4f7f\u7528\u7684\u7b2c\u4e00\u5c42\u62bd\u8c61\uff0c\u672c\u7ae0\u8282\u4e3b\u8981\u4ecb\u7ecd\u5982\u4f55\u901a\u8fc7\u76d8\u5757\u53f7\u6765\u4f7f\u7528\u78c1\u76d8\uff0c\u5176\u4e2d2.1\u8282\u4ecb\u7ecd\u76d8\u5757\u53f7\u5982\u4f55\u8f6c\u6362\u4e3a\u4e09\u7ef4\u53c2\u6570\uff0c2.2\u8282\u5206\u6790Linux0.11\u4e2d\u751f\u78c1\u76d8\u7684\u4f7f\u7528\u8fc7\u7a0b\u3002<\/p>\n<h3 id=\"21-\u4ece\u6247\u533a\u53f7\u5230\u76d8\u5757\u53f7\">2.1 \u4ece\u6247\u533a\u53f7\u5230\u76d8\u5757\u53f7<\/h3>\n<p>\u6247\u533a\u5927\u5c0f\u56fa\u5b9a\uff0c\u4f46\u64cd\u4f5c\u7cfb\u7edf\u53ef\u4ee5\u6bcf\u6b21\u8bfb\/\u5199\u8fde\u7eed\u7684\u51e0\u4e2a\u6247\u533a\uff0c\u8fd9\u51e0\u4e2a\u8fde\u7eed\u7684\u6247\u533a\u53ef\u4ee5\u7ec4\u6210\u4e00\u4e2a\u76d8\u5757\u3002\u4e3a\u65b9\u4fbf\u7406\u89e3\u5982\u4f55\u901a\u8fc7\u76d8\u5757\u53f7\u6765\u8bbf\u95ee\u78c1\u76d8\uff0c\u5047\u5b9a\u4e00\u4e2a\u76d8\u5757\u7684\u5927\u5c0f\u4e3a\u4e00\u4e2a\u6247\u533a\uff0c\u76d8\u5757\u53f7\u6392\u5217\u65b9\u5f0f\u4e0e\u6247\u533a\u53f7\u4e00\u6837\uff08\u5373\u76d8\u5757\u53f7\u4e0e\u56fe1.4\u7684\u6247\u533a\u53f7\u6392\u5217\u4e00\u81f4\uff09\u3002\u6839\u636e\u8fd9\u79cd\u6392\u5217\u65b9\u5f0f\uff0c\u5c31\u53ef\u4ee5\u6839\u636e\u76d8\u5757\u53f7\u8ba1\u7b97\u51fa\u8981\u8bbf\u95ee\u7684\u4e09\u7ef4\u53c2\u6570\uff08C,H,S\uff09\uff1a<\/p>\n<pre><code class=\"language-c\" lang=\"c\">\/\/ \u6839\u636e\u8981\u8bbf\u95ee\u7684\u4e09\u7ef4\u53c2\u6570\u53ef\u4ee5\u8ba1\u7b97\u51fa\u5bf9\u5e94\u7684\u76d8\u5757\u53f7\nblock = C * (Heads * Sectors) + H * Sectors + S;  \n \n\/\/ \u4e5f\u53ef\u4ee5\u901a\u8fc7\u76d8\u5757\u53f7\u8ba1\u7b97\u51fa\u8981\u8bbf\u95ee\u7684\u4e09\u7ef4\u53c2\u6570\nS = block % Sectors;    \/\/ \u6ce8\u610f\u5411\u78c1\u76d8\u63a7\u5236\u5668\u5185\u5199\u5165\u7684\u6247\u533a\u53f7\u662f\u771f\u5b9e\u78c1\u76d8\u7684\u7269\u7406\u6247\u533a\u53f7\uff0c\u4e0d\u662f\u4e0a\u56fe\u4e2d\u7684\u6247\u533a\u53f7\nC = block \/ ( Heads * Sectors);\nH = (block % ( Heads * Sectors)) \/ Sectors;\n<\/code><\/pre>\n<p>\u5176\u4e2d C\uff0cH\uff0cS \u8868\u793a\u8bbf\u95ee\u78c1\u76d8\u6240\u9700\u8981\u7684\u4e09\u7ef4\u53c2\u6570\uff1bblock \u8868\u793a\u76d8\u5757\u53f7\uff1bHeads \u4e3a\u5e38\u91cf\uff0c\u8868\u793a\u78c1\u76d8\u7684\u78c1\u5934\u6570\uff08\u4e5f\u5c31\u662f\u76d8\u9762\u6570\uff09\uff1bSectors \u4e3a\u5e38\u91cf\uff0c\u8868\u793a\u4e00\u4e2a\u78c1\u9053\u4e0a\u7684\u6247\u533a\u6570\uff1b\u82e5\u4e00\u4e2a\u76d8\u5757\u5bf9\u5e94n\u4e2a\u6247\u533a\uff0c\u8ba1\u7b97\u65b9\u5f0f\u4e5f\u4e0e\u4e4b\u7c7b\u4f3c\u3002<\/p>\n<p><strong>\u76d8\u5757\u5927\u5c0f\u7684\u5206\u914d\u4e5f\u4f1a\u5f71\u54cd\u5230\u78c1\u76d8\u4f7f\u7528\u7684\u6548\u7387\uff1a\u76d8\u5757\u8d8a\u5927\uff0c\u8bfb\u5199\u7684\u901f\u5ea6\u4f1a\u8d8a\u5feb\uff0c\u4f46\u788e\u7247\u4e5f\u4f1a\u8d8a\u5927\uff08\u8fd9\u4e9b\u788e\u7247\u65e0\u6cd5\u4f7f\u7528\uff09\uff1b\u76d8\u5757\u8d8a\u5c0f\u8bfb\u5199\u901f\u5ea6\u4f1a\u8d8a\u6162\uff0c\u4f46\u788e\u7247\u4f1a\u8d8a\u5c0f\u3002<\/strong><\/p>\n<h3 id=\"22-\u78c1\u76d8\u8c03\u5ea6\">2.2 \u78c1\u76d8\u8c03\u5ea6<\/h3>\n<p>\u5047\u8bbe\u78c1\u5934\u7684\u521d\u59cb\u4f4d\u7f6e\u662f100\u53f7\u78c1\u9053\uff0c\u6709\u591a\u4e2a\u8fdb\u7a0b\u5148\u540e\u9646\u7eed\u7684\u8bf7\u6c42\u8bbf\u95ee55\uff0c58\uff0c39\uff0c18\uff0c90\uff0c160\uff0c150\uff0c38\uff0c184\u53f7\u78c1\u9053<\/p>\n<h4 id=\"221-fcfs\">2.2.1 FCFS<\/h4>\n<p>\u6839\u636e\u8fdb\u7a0b\u8bf7\u6c42\u8bbf\u95ee\u78c1\u76d8\u7684\u5148\u540e\u987a\u5e8f\u8fdb\u884c\u8c03\u5ea6<\/p>\n<p>\u6309\u7167FCFS\u7684\u89c4\u5219\uff0c\u6309\u7167\u8bf7\u6c42\u5230\u8fbe\u7684\u987a\u5e8f\uff0c\u78c1\u5934\u9700\u8981\u4e00\u6b21\u79fb\u52a8\u523055\uff0c58\uff0c39\uff0c90\uff0c160\uff0c150\uff0c38\uff0c184\u53f7\u78c1\u9053<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250641.png\" referrerpolicy=\"no-referrer\" alt=\"img\">\u78c1\u5934\u603b\u5171\u79fb\u52a8\u7684\u78c1\u9053\u4e2a\u6570\u4e3a45+3+19+21+72+70+10+112+146=498<\/p>\n<p>\u5e73\u5747\u5bfb\u9053\u957f\u5ea6\u4e3a498\/9=55.3\u4e2a\u78c1\u9053<\/p>\n<ul>\n<li>\u4f18\u70b9\uff1a\u516c\u5e73\uff0c\u6027\u80fd\u8fd8\u53ef\u4ee5<\/li>\n<li>\u7f3a\u70b9\uff1a\u5982\u679c\u6709\u5927\u91cf\u8fdb\u7a0b\u7ade\u4e89\u4f7f\u7528\u78c1\u76d8\uff0c\u8bf7\u6c42\u8bbf\u95ee\u78c1\u9053\u5f88\u5206\u6563\uff0c\u5219FCFS\u5728\u6027\u80fd\u4e0a\u5f88\u5dee\uff0c\u5bfb\u9053\u65f6\u95f4\u957f\u3002<\/li>\n<\/ul>\n<h4 id=\"222-sstf\">2.2.2 SSTF<\/h4>\n<p>\u6700\u77ed\u5bfb\u9053\u65f6\u95f4\u4f18\u5148\uff0c\u5176\u8981\u6c42\u8bbf\u95ee\u7684\u78c1\u9053\u4e0e\u5f53\u524d\u78c1\u5934\u6240\u5728\u7684\u78c1\u9053\u8ddd\u79bb\u6700\u8fd1\uff0c\u4ee5\u4fbf\u6bcf\u6b21\u7684\u5bfb\u9053\u65f6\u95f4\u6700\u77ed\uff0c\u4f46\u8fd9\u79cd\u8c03\u5ea6\u7b97\u6cd5\u5374\u4e0d\u80fd\u4fdd\u8bc1\u5e73\u5747\u5bfb\u9053\u65f6\u95f4\u6700\u77ed<\/p>\n<p>\u5047\u8bbe\u78c1\u5934\u7684\u521d\u59cb\u4f4d\u7f6e\u662f100\u53f7\u78c1\u9053\uff0c\u6709\u591a\u4e2a\u8fdb\u7a0b\u5148\u540e\u9646\u7eed\u7684\u8bf7\u6c42\u8bbf\u95ee55\uff0c58\uff0c39\uff0c18\uff0c90\uff0c160\uff0c150\uff0c38\uff0c184\u53f7\u78c1\u9053<\/p>\n<p>\u6309\u7167SSTF\u7684\u89c4\u5219\uff0c\u8bf7\u6c42\u5230\u8fbe\u7684<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250635.png\" referrerpolicy=\"no-referrer\" alt=\"img\"><\/p>\n<p>\u78c1\u5934\u603b\u5171\u79fb\u52a8\u4e86\uff08100-18\uff09+\uff08184-18\uff09=248\u4e2a\u78c1\u9053<\/p>\n<p>\u5e73\u5747\u5bfb\u9053\u957f\u5ea6\u4e3a248\/9=27.5\u4e2a\u78c1\u9053<\/p>\n<ul>\n<li>\u4f18\u70b9\uff1a\u6027\u80fd\u8f83\u597d\uff0c\u5e73\u5747\u5bfb\u9053\u65f6\u95f4\u77ed<\/li>\n<li>\u7f3a\u70b9\uff1a\u53ef\u80fd\u4ea7\u751f\u201c\u9965\u997f\u201d\u73b0\u8c61<\/li>\n<\/ul>\n<h4 id=\"223-scan\">2.2.3 SCAN<\/h4>\n<p>\u5f53\u78c1\u5934\u6b63\u5728\u7531\u91cc\u5411\u5916\u79fb\u52a8\u65f6\uff0cSCAN\u7b97\u6cd5\u6240\u9009\u62e9\u7684\u4e0b\u4e00\u4e2a\u8bbf\u95ee\u5bf9\u8c61\u5e94\u662f\u5176\u6b32\u8bbf\u95ee\u7684\u78c1\u9053\uff0c\u65e2\u5728\u5f53\u524d\u78c1\u9053\u4e4b\u5916\uff0c\u53c8\u662f\u8ddd\u79bb\u6700\u8fd1\u7684\u3002\u8fd9\u6837\u7531\u91cc\u5411\u5916\u5730\u8bbf\u95ee\uff0c\u76f4\u81f3\u518d\u65e0\u66f4\u5916\u7684\u78c1\u9053\u9700\u8981\u8bbf\u95ee\u65f6\uff0c\u624d\u5c06\u78c1\u81c2\u6362\u5411\uff0c\u7531\u5916\u5411\u91cc\u79fb\u52a8\u3002\u4e5f\u53eb\u7535\u68af\u7b97\u6cd5\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250883.png\" referrerpolicy=\"no-referrer\" alt=\"img\"><\/p>\n<p>\u78c1\u5934\u603b\u5171\u79fb\u52a8\u4e86\uff08184-100\uff09+\uff08184-18\uff09=250\u4e2a\u78c1\u9053<\/p>\n<p>\u5e73\u5747\u5bfb\u9053\u957f\u5ea6\u4e3a250\/9=27.8\u4e2a\u78c1\u9053<\/p>\n<ul>\n<li>\u4f18\u70b9\uff1a\u6027\u80fd\u8f83\u597d\uff0c\u5e73\u5747\u5bfb\u9053\u65f6\u95f4\u77ed\uff0c\u4e0d\u4f1a\u4ea7\u751f\u9965\u997f\u73b0\u8c61<\/li>\n<li>\u7f3a\u70b9\uff1a1\uff0c\u53ea\u6709\u5230\u6700\u8fb9\u4e0a\u7684\u78c1\u9053\u624d\u80fd\u6539\u53d8\u78c1\u5934\u7684\u79fb\u52a8\u65b9\u5411\u30022.SCAN\u5bf9\u4e8e\u5404\u4e2a\u4f4d\u7f6e\u78c1\u9053\u54cd\u5e94\u9891\u7387\u4e0d\u5e73\u5747\u3002<\/li>\n<\/ul>\n<h4 id=\"224-c-scan\">2.2.4 C-SCAN<\/h4>\n<p>\u4e3a\u4e86\u51cf\u5c11SCAN\u7b97\u6cd5\u9020\u6210\u7684\u67d0\u4e9b\u8fdb\u7a0b\u7684\u8bf7\u6c42\u88ab\u4e25\u91cd\u63a8\u8fdf\uff0cCSCAN\u7b97\u6cd5\u89c4\u5b9a\u78c1\u5934\u5355\u5411\u79fb\u52a8\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250869.png\" referrerpolicy=\"no-referrer\" alt=\"img\"><\/p>\n<p>\u78c1\u5934\u603b\u5171\u79fb\u52a8\u4e86\uff08184-100\uff09+\uff08184-18\uff09+\uff0890-18\uff09=322\u4e2a\u78c1\u9053<\/p>\n<p>\u5e73\u5747\u5bfb\u9053\u957f\u5ea6\u4e3a322\/9=35.8\u4e2a\u78c1\u9053<\/p>\n<ul>\n<li>\u4f18\u70b9\uff1a\u6bd4\u8d77SCAN\u7b97\u6cd5\uff0c\u5bf9\u4e8e\u5404\u4f4d\u7f6e\u78c1\u9053\u7684\u54cd\u5e94\u9891\u7387\u5f88\u5e73\u5747\u3002<\/li>\n<li>\u7f3a\u70b9\uff1a\u53ea\u6709\u5230\u8fb9\u4e0a\u624d\u80fd\u6539\u53d8\u78c1\u5934\u79fb\u52a8\u65b9\u5411\uff0c\u6bd4\u8d77SCAN\u7b97\u6cd5\u6765\uff0c\u5e73\u5747\u5bfb\u9053\u65f6\u95f4\u66f4\u957f\u3002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3 id=\"23-\u751f\u78c1\u76d8\u7684\u4f7f\u7528\u8fc7\u7a0b\">2.3 \u751f\u78c1\u76d8\u7684\u4f7f\u7528\u8fc7\u7a0b<\/h3>\n<p>\u672c\u8282\u4e3b\u8981\u4ecb\u7ecd Linux0.11 \u4e2d\u751f\u78c1\u76d8\u7684\u4f7f\u7528\u8fc7\u7a0b\u3002\u672c\u8282\u5185\u5bb9\u53ea\u662f\u5bf9\u751f\u78c1\u76d8\u7684\u4f7f\u7528\u8fc7\u7a0b\u8fdb\u884c\u4e86\u7c97\u7cd9\u7684\u5206\u6790\uff0c\u4e3b\u8981\u662f\u4e3a\u4e86\u4e86\u89e3\u751f\u78c1\u76d8\u7684\u5927\u81f4\u4f7f\u7528\u8fc7\u7a0b\uff0c\u5982\u5bf9 \u8bf7\u6c42\u9879\u961f\u5217\u7684\u6570\u636e\u7ed3\u6784\uff1a<code>struct buffer_head<\/code> <code>struct request<\/code> <code>struct blk_dev_struct<\/code>\u4e09\u4e2a\u7ed3\u6784\u4f53\u662f\u600e\u4e48\u914d\u5408\u5de5\u4f5c\u7684\u7b49\u7b49\uff0c \u8fd9\u4e9b\u7ec6\u8282\u90e8\u5206\u90fd\u6ca1\u6709\u8fdb\u884c\u8bf4\u660e\uff0c\u5bf9\u4e8e\u8fd9\u4e9b\u7ec6\u8282\u5efa\u8bae\u53c2\u8003\u300aLinux\u5185\u6838\u5b8c\u5168\u5256\u6790\u2014\u2014\u57fa\u4e8e0.12\u5185\u6838\u300b\u3002<\/p>\n<p>\u751f\u78c1\u76d8\u7684\u4f7f\u7528\u8fc7\u7a0b\u7b80\u56fe\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250893.png\" referrerpolicy=\"no-referrer\" alt=\"img\"><\/p>\n<p>\u4e0b\u9762\u6839\u636e Linux0.11 \u7684\u7a0b\u5e8f\u5bf9\u751f\u78c1\u76d8\u7684\u4f7f\u7528\u8fc7\u7a0b\u8fdb\u884c\u5206\u6790\u3002<\/p>\n<p>\uff081\uff09\u8fdb\u7a0b\u5411\u7f13\u51b2\u533a\u7ba1\u7406\u7a0b\u5e8f\u63d0\u51fa\u8bfb\u5199\u78c1\u76d8\u7533\u8bf7\u3002\u7f13\u51b2\u533a\u7ba1\u7406\u7a0b\u5e8f\u505a\u51fa\u4e00\u4e2a\u78c1\u76d8\u8bf7\u6c42\uff0c\u5728\u5c06\u8bf7\u6c42\u52a0\u5165\u8bf7\u6c42\u961f\u5217\u4e2d\uff0c\u6700\u540e\u8ba9\u8fdb\u7a0b\u8fdb\u5165\u7761\u7720\u7b49\u5f85\u72b6\u6001<\/p>\n<pre><code class=\"language-c\" lang=\"c\">\/*\u521b\u5efa\u8bf7\u6c42\u9879\uff0c\u5e76\u52a0\u5165\u5230\u8bf7\u6c42\u961f\u5217\u4e2d*\/\n\/*major\u4e3a\u4e3b\u8bbe\u5907\u53f7\uff0crw\u4e3a\u547d\u4ee4\uff08\u8bfb\/\u5199\uff09\uff0cbh\u4e3a\u5b58\u653e\u6570\u636e\u7684\u7f13\u51b2\u533a\u5934\u6307\u9488*\/\nstatic void make_request(int major,int rw, struct buffer_head * bh)\n{\n\tstruct request * req;\n\tint rw_ahead;\n    \n......\n\n\/* fill up the request-info, and add it to the queue *\/\n\/*\u524d\u9762\u4e3b\u8981\u662f\u5728\u5bfb\u627e\u7a7a\u95f2\u8bf7\u6c42\u9879\uff0c\u5e76\u5c06\u8bf7\u6c42\u9879\u63d2\u5165\u5230\u8bf7\u6c42\u9879\u961f\u5217\u7684\u6307\u5b9a\u4f4d\u7f6e*\/\n\/*\u63a5\u4e0b\u6765\u5c31\u662f\u505a\u51fa\u8bf7\u6c42\u9879\uff0c\u4ece\u4e0b\u9762\u8fd9\u6bb5\u7a0b\u5e8f\u53ef\u4ee5\u770b\u51fa bh \u4e2d\u6240\u5305\u542b\u7684\u4fe1\u606f*\/\n\treq-&gt;dev = bh-&gt;b_dev;             \/*\u6570\u636e\u6e90\u7684\u4e3b\u8bbe\u5907\u53f7*\/\n\treq-&gt;cmd = rw;                    \n\treq-&gt;errors=0;\n    \/*bh-&gt;b_blocknr \u5e94\u8be5\u5c31\u662f\u56fe1.4\u4e2d\u8bf4\u7684\u6247\u533a\u53f7\uff0c\u800creq-&gt;sector\u5c31\u662f\u76d8\u5757\u53f7\u3002\n      \u4ece\u8fd9\u91cc\u53ef\u4ee5\u770b\u51fa\u4e00\u4e2a\u76d8\u5757\u7684\u5927\u5c0f\u4e3a2\u4e2a\u6247\u533a\uff082*512Bety\uff09*\/\n\treq-&gt;sector = bh-&gt;b_blocknr&lt;&lt;1;  \n\treq-&gt;nr_sectors = 2;     \/*\u672c\u6b21\u8bf7\u6c42\u7684\u6247\u533a\u6570*\/\n\treq-&gt;buffer = bh-&gt;b_data;\/*\u5c06\u8bf7\u6c42\u9879\u7684\u7f13\u51b2\u533a\u6307\u9488\u6307\u5411\u9700\u8981\u8bfb\u5199\u7684\u6570\u636e\u7f13\u51b2\u533a*\/\n\treq-&gt;waiting = NULL;\n\treq-&gt;bh = bh;\n\treq-&gt;next = NULL;\n\tadd_request(major+blk_dev,req);\/*\u5c06\u8bf7\u6c42\u9879\u52a0\u5165\u961f\u5217*\/\n}\n<\/code><\/pre>\n<p>\u5728\u5c06\u8bf7\u6c42\u9879\u63d2\u5165\u8bf7\u6c42\u961f\u5217\u65f6\uff0c\u4e3a\u4e86\u8ba9\u78c1\u76d8\u4f7f\u7528\u7684\u66f4\u52a0\u9ad8\u6548\uff0c\u8fd9\u91cc\u91c7\u7528\u4e86<strong>\u7535\u68af\u7b97\u6cd5<\/strong>\u5c06\u8bf7\u6c42\u9879\u63d2\u5165\u8bf7\u6c42\u961f\u5217\u3002<\/p>\n<pre><code class=\"language-c\" lang=\"c\">\/*\u672c\u51fd\u6570\u662f\u5c06\u5df2\u7ecf\u505a\u597d\u7684\u8bf7\u6c42\u9879(req)\uff0c\u52a0\u5165\u5230\u8bf7\u6c42\u961f\u5217(dev)\u4e2d*\/\nstatic void add_request(struct blk_dev_struct * dev, struct request * req)\n{\n\tstruct request * tmp;\n\n\treq-&gt;next = NULL;\n\tcli();\/*\u8fd9\u6bb5\u4ee3\u7801\u8981\u4e92\u65a5\uff0c\u56e0\u6b64\u5173\u4e2d\u65ad*\/\n\tif (req-&gt;bh)\n\t\treq-&gt;bh-&gt;b_dirt = 0;\n\tif (!(tmp = dev-&gt;current_request)) {\/*\u5c06tmp\u6307\u5411\u8bf7\u6c42\u961f\u5217\u7684\u961f\u9996*\/\n    \/*\u82e5\u5f53\u524d\u8bbe\u5907\u7684\u8bf7\u6c42\u9879\u5217\u8868\u4e3a\u7a7a\u5219\u8bbe\u7f6e req \u4e3a\u5f53\u524d\u8bf7\u6c42\u9879\uff0c\u5e76\u7acb\u5373\u8c03\u7528\u8bbe\u5907\u8bf7\u6c42\u9879\u5904\u7406\u51fd\u6570*\/\n\t\tdev-&gt;current_request = req;\n\t\tsti();\n\t\t(dev-&gt;request_fn)();\/*\u8bbe\u5907\u8bf7\u6c42\u9879\u5904\u7406\u51fd\u6570\u6307\u9488\uff0c\u82e5\u5f53\u524d\u8bf7\u6c42\u8bfb\u5199\u7684\u4e3a\u786c\u76d8\uff0c\u5219\u5b83\u662f do_hd_request() *\/\n\t\treturn;\n\t}\n    \/*\u5982\u679c\u5f53\u524d\u8bbe\u5907\u7684\u8bf7\u6c42\u9879\u5217\u8868\u4e0d\u4e3a\u7a7a\u5219\u5c06 req \u63d2\u5165\u8bf7\u6c42\u961f\u5217\u4e2d*\/\n\t\/*\u4e0b\u9762\u8fd9\u4e2afor\u5faa\u73af\u5c06\u5229\u7528 \u7535\u68af\u7b97\u6cd5 \u5c06req\u63d2\u5230dev\u7684\u5408\u9002\u4f4d\u7f6e*\/\n\tfor ( ; tmp-&gt;next ; tmp=tmp-&gt;next)\/*\u4ece\u524d\u5f80\u540e\u626b\u63cf\u6574\u4e2a\u8bf7\u6c42\u961f\u5217*\/\n\t\tif ((IN_ORDER(tmp,req) || \/*IN_ORDER\u5e94\u8be5\u662f\u8981\u6bd4\u8f83tem\u7684\u6247\u533a\u53f7\u662f\u5426\u5c0f\u4e8ereq\u7684\u6247\u533a\u53f7\u7684,\u4e0d\u8fc7\u8fd9\u91cc\u7b80\u5316\u4e86\uff0c\u6bd4\u8f83\u7684\u662f\u67f1\u9762\u53f7*\/\n\t\t    !IN_ORDER(tmp,tmp-&gt;next)) &amp;&amp;\n\t\t    IN_ORDER(req,tmp-&gt;next))\n\t\t\tbreak;\n\treq-&gt;next=tmp-&gt;next;\n\ttmp-&gt;next=req;\n\tsti();\/*\u5f00\u4e2d\u65ad*\/\n}\n<\/code><\/pre>\n<p>\u5c06\u8bf7\u6c42\u9879\u63d2\u5165\u8bf7\u6c42\u961f\u5217\u540e\u5c31\u4f1a\u8ba9\u8fdb\u7a0b\u8fdb\u5165\u7761\u7720\u7b49\u5f85\u72b6\u6001\uff0c\u4e0d\u8fc7\u6211\u8fd8\u6ca1\u627e\u5230\u76f8\u5173\u4ee3\u7801\uff0c\u627e\u5230\u540e\u5728\u8865\u5145\u8fd9\u4e00\u6bb5\u3002<\/p>\n<p>\uff082\uff09\u6839\u636e\uff081\uff09\u4e2d\u7b97\u51fa\u7684\u76d8\u5757\u53f7\u8ba1\u7b97\u51fa\u8981\u8bbf\u95ee\u7684\u4e09\u7ef4\u53c2\u6570\uff08\u6247\u533a\u53f7\uff0c\u67f1\u9762\uff0c\u78c1\u5934\uff09\u5e76\u5199\u5165\u78c1\u76d8\u63a7\u5236\u5668<br \/>\n\u4ece\uff081\uff09\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u5bf9\u4e8e\u786c\u76d8\u7684\u8bf7\u6c42\u9879\uff0c\u8bbe\u5907\u8bf7\u6c42\u9879\u5904\u7406\u51fd\u6570\u4e3a do_hd_request() \u3002<\/p>\n<pre><code class=\"language-c\" lang=\"c\">\/*\u672c\u51fd\u6570\u6267\u884c\u78c1\u76d8\u8bfb\u5199\u8bf7\u6c42\u64cd\u4f5c*\/\n\/*\u8be5\u51fd\u6570\u9996\u5148\u6839\u636e\u8bf7\u6c42\u9879\u4e2d\u7684\u8bbe\u5907\u53f7\u548c\u76d8\u5757\u53f7\u7b49\u4fe1\u606f\u8ba1\u7b97\u51fa\u8981\u8bbf\u95ee\u7684\u78c1\u76d8\u4e09\u7ef4\u53c2\u6570\u3002\n   \u7136\u540e\u6839\u636e\u8bf7\u6c42\u9879\u4e2d\u7684\u8bfb\u5199\u547d\u4ee4\uff0c\u5411\u78c1\u76d8\u63a7\u5236\u5668\u53d1\u51fa\u76f8\u5e94\u7684\u8bfb\u5199\u547d\u4ee4\u3002*\/\nvoid do_hd_request(void)\n{\n\tint i,r = 0;\n\tunsigned int block,dev;\n\tunsigned int sec,head,cyl;\n\tunsigned int nsect;\n\n\tINIT_REQUEST;\n\tdev = MINOR(CURRENT-&gt;dev);\n\tblock = CURRENT-&gt;sector;\/*CURRENT-&gt;sector\u4e3a\u76d8\u5757\u53f7*\/\n\tif (dev &gt;= 5*NR_HD || block+2 &gt; hd[dev].nr_sects) {\n\t\tend_request(0);\n\t\tgoto repeat;\n\t}\n\tblock += hd[dev].start_sect;\/*start_sect \u662f\u5206\u533a\u5728\u78c1\u76d8\u4e2d\u7684\u8d77\u59cb\u7269\u7406\uff08\u7edd\u5bf9\uff09\u6247\u533a\uff0c\u8fd9\u4e2a\u548c\u78c1\u76d8\u5206\u533a\u6709\u5173\uff0c\u5148\u4e0d\u7ba1\u5b83*\/\n\tdev \/= 5;\n\t\/*\u4e0b\u9762\u8fd9\u6bb5\u5185\u5d4c\u6c47\u7f16\u5c06\u6839\u636e\u76d8\u5757\u53f7\u7b97\u51facyl, head, sec(CHS)*\/\n\t__asm__(\"divl %4\":\"=a\" (block),\"=d\" (sec):\"0\" (block),\"1\" (0),\n\t\t\"r\" (hd_info[dev].sect));\n\t__asm__(\"divl %4\":\"=a\" (cyl),\"=d\" (head):\"0\" (block),\"1\" (0),\n\t\t\"r\" (hd_info[dev].head));\n\tsec++;\n\tnsect = CURRENT-&gt;nr_sectors;\/*nr_sectors \u662f\u5206\u533a\u4e2d\u7684\u6247\u533a\u603b\u6570*\/\n......\n\tif (CURRENT-&gt;cmd == WRITE) {\n        \/*\u53d1\u9001\u5199\u78c1\u76d8\u547d\u4ee4\u3002write_intr \u4e2d\u65ad\u8c03\u7528\u51fd\u6570\uff0c\u5f53\u524d\u4e2d\u65ad\u4e3a\u5199\u64cd\u4f5c\u65f6\u88ab\u8bbe\u7f6e\u6210\u4e2d\u65ad\u8fc7\u7a0b\u4e2d\u8c03\u7528\u7684 C \u51fd\u6570\u3002\n        \u78c1\u76d8\u5b8c\u6210\u5199\u76d8\u547d\u4ee4\u540e\u4f1a\u5411CPU\u53d1\u9001\u4e2d\u65ad\u8bf7\u6c42\u4fe1\u53f7\uff0c\u4e8e\u662f\u5728\u78c1\u76d8\u63a7\u5236\u5668\u5b8c\u6210\u5199\u64cd\u4f5c\u540e\u4f1a\u7acb\u523b\u8c03\u7528\u8be5\u51fd\u6570*\/\n\t\thd_out(dev,nsect,sec,head,cyl,WIN_WRITE,&amp;write_intr);\n......\n\t} else if (CURRENT-&gt;cmd == READ) {\n        \/*\u53d1\u9001\u8bfb\u78c1\u76d8\u547d\u4ee4\u3002read_intr \u7684\u7528\u6cd5\u4e0e write_intr \u7c7b\u4f3c*\/\n\t\thd_out(dev,nsect,sec,head,cyl,WIN_READ,&amp;read_intr); \n\t} else\n\t\tpanic(\"unknown hd-command\");\n}\nstatic void hd_out(unsigned int drive,unsigned int nsect,unsigned int sect,\n\t\tunsigned int head,unsigned int cyl,unsigned int cmd,\n\t\tvoid (*intr_addr)(void))\n{\n\tregister int port asm(\"dx\");\n\n......\n\n\tdo_hd = intr_addr;                   \/*do_hd = intr_addr \u5728\u78c1\u76d8\u4e2d\u65ad\u5904\u7406\u51fd\u6570\uff08hd_interrupt:\uff09\u4e2d\u88ab\u8c03\u7528*\/\n\toutb_p(hd_info[drive].ctl,HD_CMD);   \/*\u5411\u78c1\u76d8\u63a7\u5236\u5668\u4e2d\u8f93\u51fa\u63a7\u5236\u5b57\u8282*\/\n\tport=HD_DATA;\n\toutb_p(hd_info[drive].wpcom&gt;&gt;2,++port);\n\toutb_p(nsect,++port);                \/\/\u53c2\u6570\uff0c\u8bfb\u5199\u6247\u533a\u603b\u6570\n\toutb_p(sect,++port);                 \/\/\u53c2\u6570\uff0c\u8d77\u59cb\u6247\u533a\n\toutb_p(cyl,++port);                  \/\/\u53c2\u6570\uff0c\u67f1\u9762\u53f7\u4f4e8\u4f4d\n\toutb_p(cyl&gt;&gt;8,++port);               \/\/\u53c2\u6570\uff0c\u67f1\u9762\u53f7\u9ad88\u4f4d\n\toutb_p(0xA0|(drive&lt;&lt;4)|head,++port); \/\/\u53c2\u6570\uff0c\u9a71\u52a8\u5668\u53f7\u52a0\u78c1\u5934\u53f7\n\toutb(cmd,++port);                    \/\/\u547d\u4ee4\uff0c\u78c1\u76d8\u63a7\u5236\u547d\u4ee4\n}\n<\/code><\/pre>\n<p>outb_p() \u4f1a\u6267\u884c\u4e00\u6bb5\u6c47\u7f16\u4ee3\u7801\uff0c \u91cc\u9762\u5f88\u91cd\u8981\u7684\u4e00\u53e5 \uff1a<code>outb %%al,%%dx<\/code>\uff0c\u5c31\u662f\u5411\u78c1\u76d8\u7aef\u53e3\u5199\u6570\u636e\u3002<\/p>\n<p>\uff083\uff09\u78c1\u76d8\u4e2d\u65ad\u8bf7\u6c42\u5904\u7406<br \/>\n\u5f53\u78c1\u76d8\u5904\u7406\u5b8c\u6210\u6216\u53d1\u751f\u9519\u8bef\u662f\u5c31\u4f1a\u53d1\u51fa\u4e2d\u65ad\u4fe1\u53f7\uff0c\u6b64\u65f6CPU\u54cd\u5e94\u4e2d\u65ad\u8bf7\u6c42\uff0c\u5e76\u8c03\u7528\u78c1\u76d8\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\uff1a<code>hd_interrupt<\/code>:<\/p>\n<pre><code class=\"language-c\" lang=\"c\">hd_interrupt:\n\n......\n\n1:\tjmp 1f\n1:\txorl %edx,%edx\n\txchgl do_hd,%edx    #do_hd\u662f\u4e00\u4e2a\u51fd\u6570\u6307\u9488\uff0c\u88ab\u8d4b\u503c\u4e3a write_intr() \u6216 read_intr()\uff0c\n                        #\u770b\u4e00\u4e0b\u524d\u9762\u63d0\u5230\u7684 hd_out() \u8c03\u7528\u8fc7\u7a0b\u5c31\u4f1a\u660e\u767d\u4e86\u3002\u8fd9\u91cc\u5c06edx\u8bbe\u7f6e\u4e3a do_hd\n\ttestl %edx,%edx\n\tjne 1f\n\tmovl $unexpected_hd_interrupt,%edx\n1:\toutb %al,$0x20\n\tcall *%edx\t\t# \"interesting\" way of handling intr.\n                    # \u8c03\u7528 \u201cedx\u201d \u51fd\u6570\n......\n\n\tiret\n<\/code><\/pre>\n<p>\uff084\uff09\u78c1\u76d8\u5904\u7406\u5b8c\u6210\u4ea7\u751f\u4e2d\u65ad\uff0cCPU\u5904\u7406\u4e2d\u65ad\u5e76\u5c06\u78c1\u76d8\u8fd4\u56de\u6570\u636e\u52a0\u5165\u7f13\u51b2\u533a\uff0c\u6700\u540e\u5524\u9192\u8fdb\u7a0b<\/p>\n<p><code>read_intr()<\/code> \u51fd\u6570\u4f1a\u5c06\u78c1\u76d8\u63a7\u5236\u5668\u4e2d\u7684\u6570\u636e\u590d\u5236\u5230\u8bf7\u6c42\u9879\u6307\u5b9a\u7684\u7f13\u51b2\u533a\u4e2d\u3002\u5728\u6267\u884cread_intr() \u65f6\u4f1a\u8c03\u7528\u51fd\u6570 <code>end_request(1)<\/code>\uff0c \u8be5\u51fd\u6570\u4f1a\u5c06\u8fdb\u7a0b\u5524\u9192\u3002<code>write_intr()<\/code> \u7684\u5904\u7406\u8fc7\u7a0b\u4e0e <code>read_intr()<\/code>\u7c7b\u4f3c\u3002<\/p>\n<p>\u5230\u6b64\u5982\u4f55\u901a\u8fc7\u76d8\u5757\u4f7f\u7528\u78c1\u76d8\u5c31\u5206\u6790\u5b8c\u6bd5\u4e86\u3002\u4e0d\u8fc7\u7528\u76d8\u5757\u53f7\u6765\u4f7f\u7528\u78c1\u76d8\u662f\u76f8\u5f53\u9ebb\u70e6\u7684\uff0c\u7a0b\u5e8f\u5458\u5fcd\u5fcd\u4e5f\u5c31\u7b97\u4e86\uff0c\u7528\u6237\u600e\u80fd\u53d7\u5f97\u4e86\u5982\u6b64\u6298\u78e8\u3002\u4e0b\u4e00\u7ae0\u5c06\u4ecb\u7ecd\u5982\u4f55\u901a\u8fc7\u6587\u4ef6\u6765\u4f7f\u7528\u78c1\u76d8\u3002<\/p>\n<p>\u56fe\u89e3<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/202307261250045.png\" referrerpolicy=\"no-referrer\" alt=\"img\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u78c1\u76d8\u7684\u7ed3\u6784 \u4ee5\u4e0b\u4e09\u5e45\u56fe\u7247\u4e3a\u78c1\u76d8\u7ed3\u6784\u7684\u7b80\u56fe\uff1a \u78c1\u76d8\u7684\u4e2d\u95f4\u6709\u4e00\u4e2a\u4e3b\u8f74\uff0c\u5b83\u53ef\u4ee5\u5e26\u52a8\u76d8\u7247\u8f6c\u52a8\uff0c\u8ba9\u6240\u6709\u7684\u76d8\u7247\u90fd\u56f4\u7ed5\u7740 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[142,139,141,140],"class_list":["post-404","post","type-post","status-publish","format-standard","hentry","category-10","tag-cscan","tag-fcfs","tag-scan","tag-sstf"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L9-\u751f\u78c1\u76d8\u7684\u4f7f\u7528 - #\u762b\u7537\u65e5\u8bb0<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.taiyang.space\/?p=404\" \/>\n<meta property=\"og:locale\" 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