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U2FsdGVkX1+y5/SGggowxzPag+0xBS19RHfcLqTdnqPtDzwzCjK1xhGjfBEh1rdtoaLQ2UasFyWmvAnwo74/65EgkcoHLwWaOQIBM98uT7xSe8QDHf1f4D6E9NEWz9+fzU+nPeASVLsl34Ih6MuYB4MxyS6taN7VFWcLhr3XT//gfcks/s0XSNx0Kv2zeKIhoHFnWKR1QKcN6eEvTHxZfH5lusrIi6hKIGo1YadnADvjXbhCeIPTe5ItnDN0ySxgJ8PMA1ZJ9yOYQD1mmbGKfasPJgmr1HwJY2zyEw1UfZwenTumdkWeNNZ8P+7IrrT+wOvo94/aY5MOMHun0oYlTJtMuih+lrhV4w8dOZXiuiDudC3XQN4LFo1VA9UBJ2rpL8UryLjfUlZSnDeGvkkcgnuAh7yKrezF8+KOfPT++2SLvx2Z4V6RIEakJLPJN8UlqKDowwobQCPOSYkNEYlGvr/NBuXlEG6I/j9a4rT4sL304wkajPkcSujU7B7al0zjWPWveaJbRD/WTsHkvcKthjIjanl7VYcNwOfchmGZA1YHB8xMzBFNJIlR8ZBu2gFAHzlKvKaUpBMjYvi8HyZ0AKNw4sV3T7ZEv3la5p8krQREDq5TnMskkyPMPf1otf2oXRDJZBC/FCkpzus58cO0p7TAfecgOJg5PqgNVwermxAWDC09ZXFeTobmR7pStHaDOp4GO4zAIOqH5cOEyd8kQ/+27JkQwW0qou1UkUlMnZ5DxxHixqIzDTq4jL9ckfJwcQ/jeQ+Lavf8DuRNTC2JXNMdRfXZKCum4Vvw3zVLedjBBQ6nA+NNXEILTtueGNl2uNsM+TvHN8hRE4uJYnWlxwtq1QQD9Oco72ap/GV53HSUtVUxf1iRzJqWFpW0d78DKeTzH7hf3qbWJceqQalYa65f4+7+uln7Oh3ct/XaNaLIhpFRLSggIxj5LXnPtQoCsoxUQ/PNsDydPxRBb0L kwUrMk8a 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 17 Jul 2025, at 8:40, Lorenzo Stoakes wrote: > Hm something has gone weird in mm-new with this. > > The patches are in the correct order, but the 2/2 patch, 'mm/huge_memory:= use > folio_expected_ref_count() to calculate ref_count.' contains the cover le= tter > and has the suffix: > > This patch (of 2): > > Instead of open coding the ref_count calculation, use > folio_expected_ref_count() > > But immediately prior to it is 1/2 - mm/huge_memory: move unrelated code > out of __split_unmapped_folio() but with no cover letter reference. > > Andrew - has quilt got confused here? :) Since I am going to send V3 (also include after-split page cache code patch= ), maybe Andrew can drop this series and =E2=80=9Cmm/huge_memory: refactor after-split (page) cache code=E2=80=9D. H= opefully we can get everything right in V3. > > Thanks, Lorenzo > > On Mon, Jul 14, 2025 at 01:18:21PM -0400, Zi Yan wrote: >> Based on the prior discussion[1], this patch improves >> __split_unmapped_folio() by making it reusable for splitting unmapped >> folios. This helps avoid the need for a new boolean unmapped parameter >> to guard mapping-related code. >> >> An additional benefit is that __split_unmapped_folio() could be >> called on after-split folios by __folio_split(). It can enable new split >> methods. For example, at deferred split time, unmapped subpages can >> scatter arbitrarily within a large folio, neither uniform nor non-unifor= m >> split can maximize after-split folio orders for mapped subpages. >> The hope is that by calling __split_unmapped_folio() multiple times, >> a better split result can be achieved. >> >> It passed mm selftests. >> >> >> Changelog >> =3D=3D=3D >> From V2[3]: >> 1. Code format fixes >> 2. Restructured code to remove after_split goto label. >> >> From V1[2]: >> 1. Fixed indentations. >> 2. Used folio_expected_ref_count() to calculate ref_count instead of >> open coding. >> >> >> [1] https://lore.kernel.org/linux-mm/94D8C1A4-780C-4BEC-A336-7D3613B5484= 5@nvidia.com/ >> [2] https://lore.kernel.org/linux-mm/20250711030259.3574392-1-ziy@nvidia= .com/ >> [2] https://lore.kernel.org/linux-mm/20250711182355.3592618-1-ziy@nvidia= .com/ >> >> Zi Yan (2): >> mm/huge_memory: move unrelated code out of __split_unmapped_folio() >> mm/huge_memory: use folio_expected_ref_count() to calculate ref_count. >> >> mm/huge_memory.c | 289 +++++++++++++++++++++++------------------------ >> 1 file changed, 142 insertions(+), 147 deletions(-) >> >> -- >> 2.47.2 >> Best Regards, Yan, Zi