函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\fs-writeback.c Create Date:2022-07-29 10:41:27
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Find proper writeback list for the inode depending on its current state and* possibly also change of its state while we were doing writeback. Here we* handle things such as livelock prevention or fairness of writeback among* inodes

函数原型：static void requeue_inode(struct inode *inode, struct bdi_writeback *wb, struct writeback_control *wbc)

返回类型：void

参数：

类型参数名称
struct inode *inode
struct bdi_writeback *wb
struct writeback_control *wbc
1380  如果Misc 按位与I_FREEING则返回
1388  如果Misc 按位与I_DIRTY且sync_mode恒等于Wait on every mapping 或ag-and-write to avoid livelock 的值则jiffies of first dirtying 等于jiffies
1392  如果Pages which were not written 则
1397  Redirty an inode: set its when-it-was dirtied timestamp and move it to the* furthest end of its superblock's dirty-inode list.* Before stamping the inode's ->dirtied_when, we check to see whether it is
1398  返回
1401  如果Returns true if any of the pages in the mapping are marked with the tag.则
1406  如果Write this many pages, and decrementthis for each page written 小于等于0则
1408  queue inode for re-scanning after bdi->b_io list is exhausted.
1409  否则
1417  Redirty an inode: set its when-it-was dirtied timestamp and move it to the* furthest end of its superblock's dirty-inode list.* Before stamping the inode's ->dirtied_when, we check to see whether it is
1419  否则如果Misc 按位与I_DIRTY则
1425  Redirty an inode: set its when-it-was dirtied timestamp and move it to the* furthest end of its superblock's dirty-inode list.* Before stamping the inode's ->dirtied_when, we check to see whether it is
1426  否则如果Misc 按位与I_DIRTY_TIME则
1427  jiffies of first dirtying 等于jiffies
1428  de_io_list_move_locked - move an inode onto a bdi_writeback IO list*@inode: inode to be moved*@wb: target bdi_writeback*@head: one of @wb->b_{dirty|io|more_io|dirty_time}* Move @inode->i_io_list to @list of @wb and set %WB_has_dirty_io
1429  否则
1431  de_io_list_del_locked - remove an inode from its bdi_writeback IO list*@inode: inode to be removed*@wb: bdi_writeback @inode is being removed from* Remove @inode which may be on one of @wb->b_{dirty|io|more_io} lists and
调用者
名称描述
writeback_sb_inodesWrite a portion of b_io inodes which belong to @sb.* Return the number of pages and/or inodes written.* NOTE! This is called with wb->list_lock held, and will* unlock and relock that for each inode it ends up doing* IO for.