{"id":427,"date":"2020-08-18T19:23:47","date_gmt":"2020-08-18T20:23:47","guid":{"rendered":"http:\/\/www.linux-tutorial.info\/?page_id=77"},"modified":"2020-08-22T19:26:40","modified_gmt":"2020-08-22T20:26:40","slug":"this-is-the-page-title-toplevel-260","status":"publish","type":"page","link":"http:\/\/www.linux-tutorial.info\/?page_id=427","title":{"rendered":"The VFS Superblock"},"content":{"rendered":"\n<title>The VFS Superblock<\/title>\n<p>\nEvery mounted file system is represented by a VFS superblock;\namongst other information, the VFS superblock contains the:\n<p>\n<dl compact>\t<dt><b>Device<\/b><\/dt><dd> This is the device identifier for the block device that\n\t\tthis file system is contained in.  For example, <tt>\/dev\/hda1<\/tt>, the\n\t\tfirst IDE hard disk in the system has a device identifier of <em>0x301<\/em>,\n\t<dt><b>Inode pointers<\/b><\/dt><dd> The <tt>mounted<\/tt> inode pointer points at the first inode\n\t\tin this file system.  The <tt>covered<\/tt> inode pointer points at the\n\t\tinode representing the directory that this file system is mounted on.\n\t\tThe root file system&#8217;s VFS superblock does not have a <tt>covered<\/tt> pointer,\n\t<dt><b>Blocksize<\/b><\/dt><dd> The block size in bytes of this file system, for example 1024 bytes,\n\t<dt><b>Superblock operations<\/b><\/dt><dd> A pointer to a set of superblock routines for\n\t\tthis file system.  Amongst other things, these routines are used by the\n\t\tVFS to read and write inodes and superblocks.\n\t<dt><b>File System type<\/b><\/dt><dd> A pointer to the mounted file system&#8217;s <tt>file_system_type<\/tt>\n\t\tdata structure,\n\t<dt><b>File System specific<\/b><\/dt><dd> A pointer to information needed by this file system,\n<\/dl>\n<p>\n","protected":false},"excerpt":{"rendered":"<p>The VFS Superblock Every mounted file system is represented by a VFS superblock; amongst other information, the VFS superblock contains the: Device This is the device identifier for the block device that this file system is contained in. For example, &hellip; <a href=\"http:\/\/www.linux-tutorial.info\/?page_id=427\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-427","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages\/427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=427"}],"version-history":[{"count":1,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages\/427\/revisions"}],"predecessor-version":[{"id":761,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages\/427\/revisions\/761"}],"wp:attachment":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}