Linux Kernel Architecture
PageandBufferCache Performance and efficiency are two factors to which great importance is attached during kernel development. T ...
Chapter 16: Page and Buffer Cache.......................................... Caching is a kind of ‘‘reverse‘‘ swapping or paging ...
Chapter 16: Page and Buffer Cache is transparent to user applications as they do not know whether they are interacting directly ...
Chapter 16: Page and Buffer Cache The structure does not correspond to that of the binary or ternary search trees in general use ...
Chapter 16: Page and Buffer Cache only in the situation as seen by the page cache, which is primarily concerned with one specifi ...
Chapter 16: Page and Buffer Cache the entire page back to the block device because most of the page data in memory are still syn ...
Chapter 16: Page and Buffer Cache If one of the buffers is modified, this has an immediate effect on the contents of the page (a ...
Chapter 16: Page and Buffer Cache How do address spaces fit into the structures of the page cache? They implement a translation ...
Chapter 16: Page and Buffer Cache ❑ The total number of cached pages is held in thenrpagescounter variable. ❑ address_space_oper ...
Chapter 16: Page and Buffer Cache Super- block Block device Inode Addressspace Radix tree Pages Backing device information Page ...
Chapter 16: Page and Buffer Cache Implementation The nodes of a radix tree are essentially represented by the following data str ...
Chapter 16: Page and Buffer Cache The tagging information is stored in a two-dimensional array (tags)thatisapartofradix_tree_nod ...
Chapter 16: Page and Buffer Cache ❑ radix_tree_deleteremoves a tree element selected by means of its integer key. A pointer to t ...
Chapter 16: Page and Buffer Cache As demonstrated when discussingstruct address_space, each address space contains a pointer to ...
Chapter 16: Page and Buffer Cache executed by standard functions of the kernel (mpage_readpageandmpage_readpages)thatcan be used ...
Chapter 16: Page and Buffer Cache ❑ releasepageprepares page release in journaling filesystems. ❑ invalidatepageis called if a p ...
Chapter 16: Page and Buffer Cache Function Standard implementation ext3_readpage mpage_readpage ext3_readpages mpage_readpages e ...
Chapter 16: Page and Buffer Cache .sync_page = block_sync_page, .write_begin = blkdev_write_begin, .write_end = blkdev_write_end ...
Chapter 16: Page and Buffer Cache if (!error) { page_cache_get(page); SetPageLocked(page); page->mapping = mapping; page-> ...
Chapter 16: Page and Buffer Cache pposis a byte offset into a file, andindexcontains the corresponding page cache offset. Two au ...
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