- 02 Aug, 2022 31 commits
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Matthew Wilcox (Oracle) authored
This involves converting migrate_huge_page_move_mapping(). We also need a folio variant of hugetlb_set_page_subpool(), but that's for a later patch. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Muchun Song <songmuchun@bytedance.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
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Matthew Wilcox (Oracle) authored
Use a folio throughout this function. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
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Matthew Wilcox (Oracle) authored
filemap_migrate_folio() fits f2fs's needs perfectly. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Chao Yu <chao@kernel.org>
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Matthew Wilcox (Oracle) authored
filemap_migrate_folio() is a little more general than ubifs really needs, but it's better to share the code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Use filemap_migrate_folio() to do the bulk of the work, and then copy the ordered flag across if needed. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: David Sterba <dsterba@suse.com>
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Matthew Wilcox (Oracle) authored
There is nothing iomap-specific about iomap_migratepage(), and it fits a pattern used by several other filesystems, so move it to mm/migrate.c, convert it to be filemap_migrate_folio() and convert the iomap filesystems to use it. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
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Matthew Wilcox (Oracle) authored
Convert all callers to pass a folio. Most have the folio already available. Switch all users from aops->migratepage to aops->migrate_folio. Also turn the documentation into kerneldoc. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: David Sterba <dsterba@suse.com>
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Matthew Wilcox (Oracle) authored
Use a folio throughout this function. migrate_page() will be converted later. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
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Matthew Wilcox (Oracle) authored
Use a folio throughout this function. migrate_page() will be converted later. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: David Sterba <dsterba@suse.com>
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Matthew Wilcox (Oracle) authored
Now that both callers have a folio, convert this function to take a folio & rename it. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
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Matthew Wilcox (Oracle) authored
Use a folio throughout __buffer_migrate_folio(), add kernel-doc for buffer_migrate_folio() and buffer_migrate_folio_norefs(), move their declarations to buffer.h and switch all filesystems that have wired them up. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
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Matthew Wilcox (Oracle) authored
Use a folio throughout this function. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
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Matthew Wilcox (Oracle) authored
Use a folio throughout. migrate_page() will be converted to migrate_folio() later. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
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Matthew Wilcox (Oracle) authored
Provide a folio-based replacement for aops->migratepage. Update the documentation to document migrate_folio instead of migratepage. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
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Matthew Wilcox (Oracle) authored
These drivers are rather uncomfortably hammered into the address_space_operations hole. They aren't filesystems and don't behave like filesystems. They just need their own movable_operations structure, which we can point to directly from page->mapping. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
The isolate_page operation is never called for filesystems, only for device drivers which call SetPageMovable. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: David Hildenbrand <david@redhat.com>
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Matthew Wilcox (Oracle) authored
Remove a call to read_mapping_page(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Use folio_put_refs() to perform only one atomic operation instead of two. The other changes are straightforward conversions from page APIs to their folio equivalents. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Use the folio API throughout. There are a few places where we convert back to a page to call into the rest of the filesystem, so folio usage needs to be pushed down to those functions later. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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Matthew Wilcox (Oracle) authored
Reorganise the file to remove the forward declaration. Use folios throughout vxfs_immed_read_folio(). Use memcpy_to_page() instead of an open-coded kmap()/kunmap(). Remove flush_dcache_page() as this is embedded in memcpy_to_page(). Use folio_pos() instead of opencoding it. Handle multi-page folios. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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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 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 9 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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