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filemap: remove readahead_page()

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Patch series "Misc folio patches for 6.16".

Remove a few APIs that we've converted everybody from using.  I also found
a few places that extract a page pointer from i_pages, which will be an
invalid thing to do when we separate pages from folios.


This patch (of 8):

All filesystems have now been converted to call readahead_folio() so we
can delete this wrapper.

Link: https://lkml.kernel.org/r/20250402210612.2444135-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20250402210612.2444135-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2025-04-02 22:06:03 +01:00
committed by Andrew Morton
parent 5071ea3d7b
commit c09b997342
1 changed files with 3 additions and 19 deletions
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22
include/linux/pagemap.h
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@@ -1308,9 +1308,9 @@ static inline bool filemap_range_needs_writeback(struct address_space *mapping,
* struct readahead_control - Describes a readahead request.
*
* A readahead request is for consecutive pages. Filesystems which
* implement the ->readahead method should call readahead_page() or
* readahead_page_batch() in a loop and attempt to start I/O against
* each page in the request.
* implement the ->readahead method should call readahead_folio() or
* __readahead_batch() in a loop and attempt to start reads into each
* folio in the request.
*
* Most of the fields in this struct are private and should be accessed
* by the functions below.
@@ -1415,22 +1415,6 @@ static inline struct folio *__readahead_folio(struct readahead_control *ractl)
return folio;
}
/**
* readahead_page - Get the next page to read.
* @ractl: The current readahead request.
*
* Context: The page is locked and has an elevated refcount. The caller
* should decreases the refcount once the page has been submitted for I/O
* and unlock the page once all I/O to that page has completed.
* Return: A pointer to the next page, or %NULL if we are done.
*/
static inline struct page *readahead_page(struct readahead_control *ractl)
{
struct folio *folio = __readahead_folio(ractl);
return &folio->page;
}
/**
* readahead_folio - Get the next folio to read.
* @ractl: The current readahead request.