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| author | Jan Höppner <hoeppner@linux.ibm.com> | 2020-09-14 14:56:47 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-09-15 04:40:21 +0300 |
| commit | 709192d531e5b0a91f20aa14abfe2fc27ddd47af (patch) | |
| tree | 3ef738f7fb01ff7d1a9630bcb748710733bfb2c5 /scripts/bpf_helpers_doc.py | |
| parent | fd04358e0196fe3b7b44c69b755c7fc329360829 (diff) | |
| download | linux-709192d531e5b0a91f20aa14abfe2fc27ddd47af.tar.xz | |
s390/dasd: Fix zero write for FBA devices
A discard request that writes zeros using the global kernel internal
ZERO_PAGE will fail for machines with more than 2GB of memory due to the
location of the ZERO_PAGE.
Fix this by using a driver owned global zero page allocated with GFP_DMA
flag set.
Fixes: 28b841b3a7cb ("s390/dasd: Add discard support for FBA devices")
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Cc: <stable@vger.kernel.org> # 4.14+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
0 files changed, 0 insertions, 0 deletions