summaryrefslogtreecommitdiff
path: root/sound/pci/nm256/nm256_coef.c
diff options
context:
space:
mode:
authorNetanel Belgazal <netanel@annapurnalabs.com>2017-02-09 15:21:32 +0200
committerDavid S. Miller <davem@davemloft.net>2017-02-09 22:27:06 -0500
commitd81db24056132fe8b83e2fba337e9ea76675e68d (patch)
tree86c7227b467f50313292561b7412a2f8e608eb9d /sound/pci/nm256/nm256_coef.c
parent22b331c9e0a345126708af60f7d00d38b53db70b (diff)
net/ena: refactor ena_get_stats64 to be atomic context safe
ndo_get_stat64() can be called from atomic context, but the current implementation sends an admin command to retrieve the statistics from the device. This admin command can sleep. This patch re-factors the implementation of ena_get_stats64() to use the {rx,tx}bytes/count from the driver's inner counters, and to obtain the rx drop counter from the asynchronous keep alive (heart bit) event. Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'sound/pci/nm256/nm256_coef.c')
0 files changed, 0 insertions, 0 deletions
ult in > put_mountpoint() when it called hlist_del() and attempted to dereference > a m_hash.pprev that had been poisioned by another thread. Al Viro observed that the simple fix is to switch from using the namespace_sem to the mount_lock to protect the mountpoint hash table. I have taken Al's suggested patch moved put_mountpoint in pivot_root (instead of taking mount_lock an additional time), and have replaced new_mountpoint with get_mountpoint a function that does the hash table lookup and addition under the mount_lock. The introduction of get_mounptoint ensures that only the mount_lock is needed to manipulate the mountpoint hashtable. d_set_mounted is modified to only set DCACHE_MOUNTED if it is not already set. This allows get_mountpoint to use the setting of DCACHE_MOUNTED to ensure adding a struct mountpoint for a dentry happens exactly once. Cc: stable@vger.kernel.org Fixes: ce07d891a089 ("mnt: Honor MNT_LOCKED when detaching mounts") Reported-by: Krister Johansen <kjlx@templeofstupid.com> Suggested-by: Al Viro <viro@ZenIV.linux.org.uk> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'drivers/usb/serial/Makefile')