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39a380a06c3c4f3dcdbfb4943a39d8090c5aa073
Using the NAPI or netdev frag cache along with other drivers can lead to 32 KiB pages being held for a long time, despite only being used for very few page fragments. This can happen if the driver grabs one or two fragments for rx ring refill, while other drivers use (and free up) the remaining fragments. The 32 KiB higher-order page can only be freed once all users have freed their fragments. Depending on the traffic patterns, this can waste a lot of memory and look a lot like a memory leak. Signed-off-by: Felix Fietkau <[email protected]>
Description
mac80211 driver for MediaTek MT76x0e, MT76x2e, MT7603, MT7615, MT7628 and MT7688
105 MiB
Languages
C
99.7%
Perl
0.2%
Makefile
0.1%