page_offset

Name:Return byte-offset into filesystem object for page.

Proto:static inline loff_t page_offset(struct page *page)

Type:loff_t

Parameter:

Type	Parameter	Name
struct page *	page

436

Return Our offset within mapping. << PAGE_SHIFT determines the page size

**Caller**
Name	Describe
block_page_mkwrite	lock_page_mkwrite() is not allowed to change the file size as it gets* called from a page fault handler when a page is first dirtied
iomap_readpage
iomap_next_page
iomap_readpages
iomap_page_mkwrite
iomap_writepage_map	We implement an immediate ioend submission policy here to avoid needing to* chain multiple ioends and hence nest mempool allocations which can violate* forward progress guarantees we need to provide
page_seek_hole_data	Seek for SEEK_DATA / SEEK_HOLE within @page, starting at @lastoff.* Returns true if found and updates @lastoff to the offset in file.
page_cache_seek_hole_data	Seek for SEEK_DATA / SEEK_HOLE in the page cache.* Within unwritten extents, the page cache determines which parts are holes* and which are data: uptodate buffer heads count as data; everything else* counts as a hole.

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