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cifs: Use a folio in cifs_page_mkwrite()
Avoids many calls to compound_head() and removes calls to various compat functions. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: David Howells <dhowells@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
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1 changed files with 8 additions and 9 deletions
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@ -4489,23 +4489,22 @@ cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
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* If the page is mmap'ed into a process' page tables, then we need to make
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* sure that it doesn't change while being written back.
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*/
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static vm_fault_t
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cifs_page_mkwrite(struct vm_fault *vmf)
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static vm_fault_t cifs_page_mkwrite(struct vm_fault *vmf)
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{
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struct page *page = vmf->page;
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struct folio *folio = page_folio(vmf->page);
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/* Wait for the page to be written to the cache before we allow it to
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* be modified. We then assume the entire page will need writing back.
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/* Wait for the folio to be written to the cache before we allow it to
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* be modified. We then assume the entire folio will need writing back.
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*/
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#ifdef CONFIG_CIFS_FSCACHE
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if (PageFsCache(page) &&
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wait_on_page_fscache_killable(page) < 0)
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if (folio_test_fscache(folio) &&
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folio_wait_fscache_killable(folio) < 0)
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return VM_FAULT_RETRY;
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#endif
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wait_on_page_writeback(page);
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folio_wait_writeback(folio);
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if (lock_page_killable(page) < 0)
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if (folio_lock_killable(folio) < 0)
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return VM_FAULT_RETRY;
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return VM_FAULT_LOCKED;
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}
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