/* * Copyright (c) 2001-2005 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_SYSCTL_H__ #define __XFS_SYSCTL_H__ #include /* * Tunable xfs parameters */ typedef struct xfs_sysctl_val { int min; int val; int max; } xfs_sysctl_val_t; typedef struct xfs_param { xfs_sysctl_val_t sgid_inherit; /* Inherit S_ISGID if process' GID is * not a member of parent dir GID. */ xfs_sysctl_val_t symlink_mode; /* Link creat mode affected by umask */ xfs_sysctl_val_t panic_mask; /* bitmask to cause panic on errors. */ xfs_sysctl_val_t error_level; /* Degree of reporting for problems */ xfs_sysctl_val_t syncd_timer; /* Interval between xfssyncd wakeups */ xfs_sysctl_val_t stats_clear; /* Reset all XFS statistics to zero. */ xfs_sysctl_val_t inherit_sync; /* Inherit the "sync" inode flag. */ xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */ xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */ xfs_sysctl_val_t xfs_buf_timer; /* Interval between xfsbufd wakeups. */ xfs_sysctl_val_t xfs_buf_age; /* Metadata buffer age before flush. */ xfs_sysctl_val_t inherit_nosym; /* Inherit the "nosymlinks" flag. */ xfs_sysctl_val_t rotorstep; /* inode32 AG rotoring control knob */ xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */ xfs_sysctl_val_t fstrm_timer; /* Filestream dir-AG assoc'n timeout. */ xfs_sysctl_val_t eofb_timer; /* Interval between eofb scan wakeups */ xfs_sysctl_val_t cowb_timer; /* Interval between cowb scan wakeups */ } xfs_param_t; /* * xfs_error_level: * * How much error reporting will be done when internal problems are * encountered. These problems normally return an EFSCORRUPTED to their * caller, with no other information reported. * * 0 No error reports * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any * additional errors that are known to not cause shutdowns) * * xfs_panic_mask bit 0x8 turns the error reports into panics */ enum { /* XFS_REFCACHE_SIZE = 1 */ /* XFS_REFCACHE_PURGE = 2 */ /* XFS_RESTRICT_CHOWN = 3 */ XFS_SGID_INHERIT = 4, XFS_SYMLINK_MODE = 5, XFS_PANIC_MASK = 6, XFS_ERRLEVEL = 7, XFS_SYNCD_TIMER = 8, /* XFS_PROBE_DMAPI = 9 */ /* XFS_PROBE_IOOPS = 10 */ /* XFS_PROBE_QUOTA = 11 */ XFS_STATS_CLEAR = 12, XFS_INHERIT_SYNC = 13, XFS_INHERIT_NODUMP = 14, XFS_INHERIT_NOATIME = 15, XFS_BUF_TIMER = 16, XFS_BUF_AGE = 17, /* XFS_IO_BYPASS = 18 */ XFS_INHERIT_NOSYM = 19, XFS_ROTORSTEP = 20, XFS_INHERIT_NODFRG = 21, XFS_FILESTREAM_TIMER = 22, }; extern xfs_param_t xfs_params; struct xfs_globals { int log_recovery_delay; /* log recovery delay (secs) */ }; extern struct xfs_globals xfs_globals; #ifdef CONFIG_SYSCTL extern int xfs_sysctl_register(void); extern void xfs_sysctl_unregister(void); #else # define xfs_sysctl_register() (0) # define xfs_sysctl_unregister() do { } while (0) #endif /* CONFIG_SYSCTL */ #endif /* __XFS_SYSCTL_H__ */ >space:mode:
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/soc
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/soc')