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13 June 2022, 11:31:42 UTC
Revision b8fceee17a310f189188599a8fa5e9beaff57eb0 authored by Davide Libenzi on 20 September 2007, 19:40:16 UTC, committed by Linus Torvalds on 20 September 2007, 20:19:59 UTC 
signalfd simplification
 
This simplifies signalfd code, by avoiding it to remain attached to the
sighand during its lifetime.

In this way, the signalfd remain attached to the sighand only during
poll(2) (and select and epoll) and read(2).  This also allows to remove
all the custom "tsk == current" checks in kernel/signal.c, since
dequeue_signal() will only be called by "current".

I think this is also what Ben was suggesting time ago.

The external effect of this, is that a thread can extract only its own
private signals and the group ones.  I think this is an acceptable
behaviour, in that those are the signals the thread would be able to
fetch w/out signalfd.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 9db619e
History
Tip revision: b8fceee17a310f189188599a8fa5e9beaff57eb0 authored by Davide Libenzi on 20 September 2007, 19:40:16 UTC
signalfd simplification
Tip revision: b8fceee
File Mode Size
Documentation
arch
block
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
scripts
security
sound
usr
.gitignore -rw-r--r-- 607 bytes
.mailmap -rw-r--r-- 3.6 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 89.3 KB
Kbuild -rw-r--r-- 1.5 KB
MAINTAINERS -rw-r--r-- 91.1 KB
Makefile -rw-r--r-- 50.1 KB
README -rw-r--r-- 16.5 KB
REPORTING-BUGS -rw-r--r-- 3.0 KB

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