/* * linux/fs/hfs/sysdep.c * * Copyright (C) 1996 Paul H. Hargrove * (C) 2003 Ardis Technologies * This file may be distributed under the terms of the GNU General Public License. * * This file contains the code to do various system dependent things. */ #include #include "hfs_fs.h" /* dentry case-handling: just lowercase everything */ static int hfs_revalidate_dentry(struct dentry *dentry, unsigned int flags) { struct inode *inode; int diff; if (flags & LOOKUP_RCU) return -ECHILD; inode = d_inode(dentry); if(!inode) return 1; /* fix up inode on a timezone change */ diff = sys_tz.tz_minuteswest * 60 - HFS_I(inode)->tz_secondswest; if (diff) { inode->i_ctime.tv_sec += diff; inode->i_atime.tv_sec += diff; inode->i_mtime.tv_sec += diff; HFS_I(inode)->tz_secondswest += diff; } return 1; } const struct dentry_operations hfs_dentry_operations = { .d_revalidate = hfs_revalidate_dentry, .d_hash = hfs_hash_dentry, .d_compare = hfs_compare_dentry, }; 508c'/> net-next plumbingsTobias Klauser
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authorDexuan Cui <decui@microsoft.com>2017-01-28 11:46:02 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-31 10:59:48 +0100
commit433e19cf33d34bb6751c874a9c00980552fe508c (patch)
treece6547ef2987fbb289fa28f03536328a42781651 /include/dt-bindings/clock/qcom,mmcc-msm8960.h
parent191e885a2e130e639bb0c8ee350d7047294f2ce6 (diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/dt-bindings/clock/qcom,mmcc-msm8960.h')