- 02 Aug, 2022 10 commits
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Matthew Wilcox (Oracle) authored
This is a straightforward conversion from the page APIs to the folio APIs. Symlinks are not allowed to be larger than PAGE_SIZE, so there is little work to do here. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
This relatively straightforward converion saves a call to compound_head() hidden inside put_page(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
The bare use of '9' confuses some people. We also don't need this cast, since the compiler does exactly that cast for us. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Set p->v to NULL if we try to read beyond the end of the disk, just like we do if we get an error returned from trying to read the disk. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
That rather complicated expression is just trying to find the offset of this sector within a page, and there are easier ways to express that. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Since commit 67f9fd91, the code to wait for the read to complete has been dead. That commit wrongly stated that the read was synchronous already; this seems to have been a confusion about which ->readpage operation was being called. Instead of reintroducing an asynchronous version of read_mapping_page(), call the readahead code directly to submit all reads first before waiting for them in read_mapping_page(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Remove the open-coding of filemap_fdatawait_range(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If a page can't be written back, we need to call mapping_set_error(), not clear the page's Uptodate flag. Also remove the clearing of PageError on success; that flag is used for read errors, not write errors. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Since we actually know what error happened, we can report it instead of having the generic code return -EIO for pages that were unlocked without being marked uptodate. Also remove a test of PageError since we have the return value at this point. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
We can cache this information in a local variable instead of communicating from one part of the function to another via folio flags. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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- 29 Jun, 2022 30 commits
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Matthew Wilcox (Oracle) authored
The pagecache handles readpage failing by itself; it doesn't want filesystems to remove pages from under it. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If a buffer is completed with an error, its uptodate flag will be clear, so the page_uptodate variable will have been set to 0. There's no need to check PageError here. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
The page cache clears the error bit before calling ->read_folio(), so this condition could never have been true. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Just because there has been a read error doesn't mean we should avoid marking this part of the folio as uptodate. Indeed, it may overwrite the error part of the folio and let us mark the entire folio uptodate. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Pages returned from read_mapping_page() are always uptodate, so this check is unnecessary. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
read_mapping_folio() returns an ERR_PTR if the folio is not uptodate, so this check is simply dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, or a page that is not Uptodate, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this test is not needed. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this test is not needed. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If read_mapping_page() sees a page with PageError set, it returns a PTR_ERR(). Checking PageError again is simply dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Add information on the use of 'file', whether ->read_folio should be synchronous, and steer new callers towards calling read_mapping_folio() instead of calling ->read_folio directly. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
By passing ->read_folio to filemap_read_folio(), we can use filemap_read_folio() in do_read_cache_folio(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
If the call to filler() returns AOP_TRUNCATED_PAGE, we need to retry the page cache lookup. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
No functionality change intended; this simply moves code around to disentangle the function a little. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
The 'extern' keyword is not necessary and removing it lets us shorten some lines. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
All callers of find_get_pages_range(), pagevec_lookup_range() and pagevec_lookup() have now been removed. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
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Matthew Wilcox (Oracle) authored
This is a straightforward conversion. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
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Matthew Wilcox (Oracle) authored
Change the guts of check_move_unevictable_pages() over to use folios and add check_move_unevictable_pages() as a wrapper. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
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Matthew Wilcox (Oracle) authored
Use folios throughout. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
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Matthew Wilcox (Oracle) authored
Use folios throughout this function. That removes the last caller of huge_pagevec_release(), so delete that too. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
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Matthew Wilcox (Oracle) authored
Convert this function to use folios throughout. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org> Acked-by: Chao Yu <chao@kernel.org>
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Matthew Wilcox (Oracle) authored
The called functions all use pages, so just convert back to a page. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
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