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| author | Eric Dumazet <edumazet@google.com> | 2017-01-19 02:03:08 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-04 03:47:10 -0500 |
| commit | 087dced61adcd8275de2586aa1d9f51c3887c1bf (patch) | |
| tree | 46d2010d2aad54b1f71b476ef942964c53408fae /net/unix/af_unix.c | |
| parent | 0c687a735cdb1d7670097ab12e505a14fdec55ca (diff) | |
net/mlx5e: Do not recycle pages from emergency reserve
[ Upstream commit e048fc50d7bde23136e098e04a324d7e3404408d ]
A driver using dev_alloc_page() must not reuse a page allocated from
emergency memory reserve.
Otherwise all packets using this page will be immediately dropped,
unless for very specific sockets having SOCK_MEMALLOC bit set.
This issue might be hard to debug, because only a fraction of received
packets would be dropped.
Fixes: 4415a0319f92 ("net/mlx5e: Implement RX mapped page cache for page recycle")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions