diff options
author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-06-08 21:20:43 +0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-10-14 17:15:33 +0200 |
commit | 85462323555dda749f1c5373a8d72679464c968d (patch) | |
tree | aeec1f9a2ad6665c70a88483cbe5e9a3a2f33536 /kernel/time/tick-sched.c | |
parent | 7591103c08abade60aeddb432ed0686ddd0de1c6 (diff) |
do_generic_file_read: s/EINTR/EIO/ if lock_page_killable() fails
If lock_page_killable() fails because the task was killed by SIGKILL or
any other fatal signal, do_generic_file_read() returns -EIO.
This seems to be OK, because in fact the userspace won't see this error,
the task will dequeue SIGKILL and exit.
However, /sbin/init is different, it will dequeue SIGKILL, ignore it, and
return to the user-space with the bogus -EIO.
Change the code to return the error code from lock_page_killable(), -EINTR.
This doesn't fix the bug, but perhaps makes sense anyway. Imho, with this
change the code looks a bit more logical, and the "good" init should handle
the spurious EINTR or short read.
Afaics we can also change lock_page_killable() to return -ERESTARTNOINTR,
but this can't prevent the short reads.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/time/tick-sched.c')
0 files changed, 0 insertions, 0 deletions