Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\iomap\buffered-io.c Create Date:2022-07-28 20:31:52
Last Modify:2020-03-12 14:18:49 Copyright©Brick
home page Tree
Annotation kernel can get tool activityDownload SCCTChinese

Name:iomap_readpages_actor

Proto:static loff_t iomap_readpages_actor(struct inode *inode, loff_t pos, loff_t length, void *data, struct iomap *iomap, struct iomap *srcmap)

Type:loff_t

Parameter:

TypeParameterName
struct inode *inode
loff_tpos
loff_tlength
void *data
struct iomap *iomap
struct iomap *srcmap
402  ctx = data
405  When done < length cycle
406  If cur_page && offset_in_page(pos + done) == 0 Then
407  If Not cur_page_in_bio Then lock_page - unlock a locked page*@page: the page* Unlocks the page and wakes up sleepers in ___wait_on_page_locked().* Also wakes sleepers in wait_on_page_writeback() because the wakeup* mechanism between PageLocked pages and PageWriteback pages is shared.
409  Perform a free_page(), also freeing any swap cache associated with* this page if it is the last user of the page.
410  cur_page = NULL
412  If Not cur_page Then
413  cur_page = iomap_next_page(inode, pages, pos, length, & done)
415  If Not cur_page Then Break
417  cur_page_in_bio = false
419  ret = iomap_readpage_actor(inode, pos + done, length - done, ctx, iomap, srcmap)
423  Return done