block_write_full_page

Name:The generic ->writepage function for buffer-backed address_spaces

Proto:int block_write_full_page(struct page *page, get_block_t *get_block, struct writeback_control *wbc)

Type:int

Parameter:

Type	Parameter	Name
struct page *	page
get_block_t *	get_block
struct writeback_control *	wbc

2962

2963

i_size = NOTE: in a 32bit arch with a preemptable kernel and* an UP compile the i_size_read/write must be atomic* with respect to the local cpu (unlike with preempt disabled),* but they don't need to be atomic with respect to other cpus like in* true SMP (so they

2964

end_index = i_size >> PAGE_SHIFT determines the page size

2968

If Our offset within mapping. < end_index Then Return While block_write_full_page is writing back the dirty buffers under* the page lock, whoever dirtied the buffers may decide to clean them* again at any time

2973

offset = i_size & PAGE_SIZE - 1

2974

If Our offset within mapping. >= end_index + 1 || Not offset Then

2980

do_invalidatepage - invalidate part or all of a page*@page: the page which is affected*@offset: start of the range to invalidate*@length: length of the range to invalidate* do_invalidatepage() is called when all or part of the page has become

2981

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.

2982

Return 0

2992

zero_user_segment(page, offset, PAGE_SIZE)

2993

Return While block_write_full_page is writing back the dirty buffers under* the page lock, whoever dirtied the buffers may decide to clean them* again at any time

**Caller**
Name	Describe
blkdev_writepage

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