• Tejun Heo's avatar
    libata: implement ATA_HORKAGE_MAX_TRIM_128M and apply to Sandisks · 3b545563
    Tejun Heo authored
    All three generations of Sandisk SSDs lock up hard intermittently.
    Experiments showed that disabling NCQ lowered the failure rate significantly
    and the kernel has been disabling NCQ for some models of SD7's and 8's,
    which is obviously undesirable.
    
    Karthik worked with Sandisk to root cause the hard lockups to trim commands
    larger than 128M. This patch implements ATA_HORKAGE_MAX_TRIM_128M which
    limits max trim size to 128M and applies it to all three generations of
    Sandisk SSDs.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Cc: Karthik Shivaram <karthikgs@fb.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
    3b545563
libata.h 66.6 KB