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| author | Mikulas Patocka <mpatocka@redhat.com> | 2023-10-31 19:12:54 +0100 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2023-10-31 19:25:06 +0100 |
| commit | 9793c269da6cd339757de6ba5b2c8681b54c99af (patch) | |
| tree | 6c71b9965930e7307d5431500ae3627dbaad1e3b /drivers/md/dm-io.c | |
| parent | dm integrity: use crypto_shash_digest() in sb_mac() (diff) | |
| download | linux-9793c269da6cd339757de6ba5b2c8681b54c99af.tar.xz linux-9793c269da6cd339757de6ba5b2c8681b54c99af.zip | |
dm crypt: account large pages in cc->n_allocated_pages
The commit 5054e778fcd9c ("dm crypt: allocate compound pages if
possible") changed dm-crypt to use compound pages to improve
performance. Unfortunately, there was an oversight: the allocation of
compound pages was not accounted at all. Normal pages are accounted in
a percpu counter cc->n_allocated_pages and dm-crypt is limited to
allocate at most 2% of memory. Because compound pages were not
accounted at all, dm-crypt could allocate memory over the 2% limit.
Fix this by adding the accounting of compound pages, so that memory
consumption of dm-crypt is properly limited.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: 5054e778fcd9c ("dm crypt: allocate compound pages if possible")
Cc: stable@vger.kernel.org # v6.5+
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'drivers/md/dm-io.c')
0 files changed, 0 insertions, 0 deletions