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| author |  Matthew Wilcox (Oracle) <willy@infradead.org>
| 2024-03-11 19:18:34 +0000 |
|---|---|---|
| committer |  Andrew Morton <akpm@linux-foundation.org>
| 2024-03-12 13:07:16 -0700 |
| commit | 47932e7048df9156e96133ee90fb3e9df68dbd15 (patch) | |
| tree | ebba369496d523e16dc182d9167a1d8bd623687b /rust | |
| parent | filemap: avoid unnecessary major faults in filemap_fault() (diff) | |
| download | linux-47932e7048df9156e96133ee90fb3e9df68dbd15.tar.gz linux-47932e7048df9156e96133ee90fb3e9df68dbd15.tar.bz2 linux-47932e7048df9156e96133ee90fb3e9df68dbd15.zip | |
mm: remove folio from deferred split list before uncharging it
When freeing a large folio, we must remove it from the deferred split list
before we uncharge it as each memcg has its own deferred split list (with
associated lock) and removing a folio from the deferred split list while
holding the wrong lock will corrupt that list and cause various related
problems.
Link: https://lore.kernel.org/linux-mm/367a14f7-340e-4b29-90ae-bc3fcefdd5f4@arm.com/
Link: https://lkml.kernel.org/r/20240311191835.312162-1-willy@infradead.org
Fixes: f77171d241e3 (mm: allow non-hugetlb large folios to be batch processed)
Fixes: 29f3843026cf (mm: free folios directly in move_folios_to_lru())
Fixes: bc2ff4cbc329 (mm: free folios in a batch in shrink_folio_list())
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Debugged-by: Ryan Roberts <ryan.roberts@arm.com>
Tested-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'rust')
0 files changed, 0 insertions, 0 deletions