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David Howells 65f27f3844 WorkStruct: Pass the work_struct pointer instead of context data 
Pass the work_struct pointer to the work function rather than context data.
The work function can use container_of() to work out the data.

For the cases where the container of the work_struct may go away the moment the
pending bit is cleared, it is made possible to defer the release of the
structure by deferring the clearing of the pending bit.

To make this work, an extra flag is introduced into the management side of the
work_struct.  This governs auto-release of the structure upon execution.

Ordinarily, the work queue executor would release the work_struct for further
scheduling or deallocation by clearing the pending bit prior to jumping to the
work function.  This means that, unless the driver makes some guarantee itself
that the work_struct won't go away, the work function may not access anything
else in the work_struct or its container lest they be deallocated..  This is a
problem if the auxiliary data is taken away (as done by the last patch).

However, if the pending bit is *not* cleared before jumping to the work
function, then the work function *may* access the work_struct and its container
with no problems.  But then the work function must itself release the
work_struct by calling work_release().

In most cases, automatic release is fine, so this is the default.  Special
initiators exist for the non-auto-release case (ending in _NAR).


Signed-Off-By: David Howells <dhowells@redhat.com>
2006-11-22 14:55:48 +00:00
..
bluetooth [Bluetooth] Support concurrent connect requests 2006-10-15 23:14:30 -07:00
irda [IrDA]: Memory allocations cleanups 2006-09-28 18:02:48 -07:00
netfilter Merge git://git.infradead.org/hdrcleanup-2.6 2006-06-20 15:10:08 -07:00
sctp [SCTP]: Fix receive buffer accounting. 2006-10-11 23:59:44 -07:00
tc_act [PKT_SCHED]: Kill pkt_act.h inlining. 2006-09-22 14:55:10 -07:00
tipc [TIPC]: Corrected potential misuse of tipc_media_addr structure. 2006-06-25 23:38:29 -07:00
act_api.h [PKT_SCHED]: Kill pkt_act.h inlining. 2006-09-22 14:55:10 -07:00
addrconf.h [IPV6] ADDRCONF: Mobile IPv6 Home Address support. 2006-09-22 15:20:29 -07:00
af_unix.h [AF_UNIX]: Kernel memory leak fix for af_unix datagram getpeersec patch 2006-08-02 14:12:06 -07:00
ah.h [IPSEC]: Use HMAC template and hash interface 2006-09-21 11:46:18 +10:00
arp.h [IPV4] net/ipv4/arp.c: trivial annotations 2006-09-28 18:02:14 -07:00
atmclip.h
ax25.h [AX.25]: Reference counting for AX.25 routes. 2006-07-03 19:30:18 -07:00
checksum.h
cipso_ipv4.h [NetLabel]: audit fixups due to delayed feedback 2006-09-29 17:05:05 -07:00
compat.h Merge git://git.infradead.org/hdrcleanup-2.6 2006-06-20 15:10:08 -07:00
datalink.h
dn.h [NET]: Reduce sizeof(struct flowi) by 20 bytes. 2006-10-21 20:24:01 -07:00
dn_dev.h
dn_fib.h [DECNET]: cleanups 2006-09-22 14:54:40 -07:00
dn_neigh.h
dn_nsp.h
dn_route.h
dsfield.h
dst.h [NET]: Annotate dst_ops protocol 2006-09-28 18:02:58 -07:00
esp.h [IPSEC] esp: Defer output IV initialization to first use. 2006-09-22 15:17:35 -07:00
fib_rules.h [NET]: Introduce RTA_TABLE/FRA_TABLE attributes 2006-09-22 14:54:25 -07:00
flow.h [NET]: Reduce sizeof(struct flowi) by 20 bytes. 2006-10-21 20:24:01 -07:00
gen_stats.h
genetlink.h [PATCH] Add genetlink utilities for payload length calculation 2006-10-01 00:39:29 -07:00
icmp.h [IPV4]: icmp_send() annotation 2006-09-28 18:01:06 -07:00
ieee80211.h [PATCH] ieee80211: Make ieee80211_rx_any usable 2006-07-27 16:17:28 -04:00
ieee80211_crypt.h
ieee80211_radiotap.h
ieee80211softmac.h [PATCH] softmac: Fix WX and association related races 2006-10-16 20:09:47 -04:00
ieee80211softmac_wx.h [PATCH] softmac: add SIOCSIWMLME 2006-04-24 16:15:58 -04:00
if_inet6.h [IPV6] ADDRCONF: Convert addrconf_lock to RCU. 2006-09-22 15:20:26 -07:00
inet6_connection_sock.h
inet6_hashtables.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
inet_common.h
inet_connection_sock.h [IPV4]: inet_csk_search_req() annotations 2006-09-28 18:02:15 -07:00
inet_ecn.h [IPV6]: Fix ECN bug on big-endian 2006-11-05 14:11:26 -08:00
inet_hashtables.h [IPV4]: annotate inet_lookup() and friends 2006-09-28 18:02:26 -07:00
inet_sock.h [IPV4]: annotate inet_lookup() and friends 2006-09-28 18:02:26 -07:00
inet_timewait_sock.h WorkStruct: Pass the work_struct pointer instead of context data 2006-11-22 14:55:48 +00:00
inetpeer.h [IPV4] inet_peer: Group together avl_left, avl_right, v4daddr to speedup lookups on some CPUS 2006-10-20 00:28:35 -07:00
ip.h [IPV4]: ip_icmp_error() annotations 2006-09-28 18:02:09 -07:00
ip6_checksum.h
ip6_fib.h [IPV6] ROUTE: Unify RT6_F_xxx and RT6_SELECT_F_xxx flags 2006-09-22 14:55:56 -07:00
ip6_route.h [IPV6]: Remove struct pol_chain. 2006-10-18 19:55:25 -07:00
ip6_tunnel.h
ip_fib.h [IPv4] fib: Remove unused fib_config members 2006-10-18 20:26:36 -07:00
ip_mp_alg.h [IPV4]: multipath_set_nhinfo() annotations 2006-09-28 18:01:15 -07:00
ip_vs.h [IPVS]: Compile fix for annotations in userland. 2006-11-09 20:00:55 -08:00
ipcomp.h [CRYPTO] users: Use crypto_comp and crypto_has_* 2006-09-21 11:46:22 +10:00
ipconfig.h
ipip.h
ipv6.h [IPV6]: struct in6_addr annotations 2006-09-28 18:02:30 -07:00
ipx.h [IPX]: Annotate and fix IPX checksum 2006-11-05 14:11:25 -08:00
iw_handler.h
lapb.h
llc.h
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h
llc_if.h [LLC]: add multicast support for datagrams 2006-06-17 21:26:08 -07:00
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
mip6.h [IPV6] MIP6: Add receiving mobility header functions through raw socket. 2006-09-22 15:07:01 -07:00
ndisc.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
neighbour.h [IPV6] NDISC: Set per-entry is_router flag in Proxy NA. 2006-09-22 15:20:24 -07:00
netdma.h Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
netevent.h [NET]: Network Event Notifier Mechanism. 2006-08-02 13:38:20 -07:00
netlabel.h [PATCH] gfp_t in netlabel 2006-10-15 11:00:58 -07:00
netlink.h [IPV4]: introduce nla_get_be32()/NLA_PUT_BE32() 2006-09-28 17:54:14 -07:00
netrom.h [NETROM]: Eleminate HZ from NET/ROM kernel interfaces 2006-05-03 23:27:47 -07:00
nexthop.h [IPv4]: FIB configuration using struct fib_config 2006-09-22 14:55:04 -07:00
p8022.h
pkt_cls.h
pkt_sched.h [PKT_SCHED]: Fix regression in PSCHED_TADD{,2}. 2006-07-24 12:44:23 -07:00
protocol.h [NET] gso: Fix up GSO packets with broken checksums 2006-07-08 13:34:56 -07:00
psnap.h
raw.h Merge git://git.infradead.org/hdrcleanup-2.6 2006-06-20 15:10:08 -07:00
rawv6.h
red.h [PKT_SCHED] RED: Fix overflow in calculation of queue average 2006-08-04 22:59:51 -07:00
request_sock.h [MLSXFRM]: Auto-labeling of child sockets 2006-09-22 14:53:29 -07:00
rose.h [ROSE]: Eleminate HZ from ROSE kernel interfaces 2006-05-03 23:28:20 -07:00
route.h [IPV4]: route.h annotations 2006-09-28 18:02:10 -07:00
sch_generic.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
scm.h [AF_UNIX]: Kernel memory leak fix for af_unix datagram getpeersec patch 2006-08-02 14:12:06 -07:00
slhc_vj.h
snmp.h [SCTP]: Extend /proc/net/sctp/snmp to provide more statistics. 2006-09-22 14:55:16 -07:00
sock.h [NET]: kernel-doc fix for sock.h 2006-10-22 20:38:00 -07:00
syncppp.h
tcp.h [TCP]: SNMPv2 tcpAttemptFails counter error 2006-08-02 13:38:19 -07:00
tcp_ecn.h [IPV6]: Added GSO support for TCPv6 2006-06-30 14:12:10 -07:00
tcp_states.h
timewait_sock.h [NET]: Introduce protocol-specific destructor for time-wait sockets. 2006-10-12 00:00:00 -07:00
transp_v6.h
udp.h [UDP]: saddr_cmp function should take const socket pointers 2006-09-22 15:18:23 -07:00
x25.h
x25device.h
xfrm.h IPsec: correct semantics for SELinux policy matching 2006-10-11 23:59:37 -07:00