swh:1:snp:3c665ee4f67729f27f2e40193ab88e7298cf0fef
Revision 116e90b23f74d303e8d607c7a7d54f60f14ab9f2 authored by Jan Beulich on 22 June 2012, 15:36:09 UTC, committed by Greg Kroah-Hartman on 26 June 2012, 19:37:36 UTC
The recent changes to the printk buffer management resulted in SYSLOG_ACTION_READ to only return a single message, whereas previously the buffer would get filled as much as possible. As, when too small to fit everything, filling it to the last byte would be pretty ugly with the new code, the patch arranges for as many messages as possible to get returned in a single invocation. User space tools in at least all SLES versions depend on the old behavior. This at once addresses the issue attempted to get fixed with commit b56a39ac263e5b8cafedd551a49c2105e68b98c2 ("printk: return -EINVAL if the message len is bigger than the buf size"), and since that commit widened the possibility for losing a message altogether, the patch here assumes that this other commit would get reverted first (otherwise the patch here won't apply). Furthermore, this patch also addresses the problem dealt with in commit 4a77a5a06ec66ed05199b301e7c25f42f979afdc ("printk: use mutex lock to stop syslog_seq from going wild"), so I'd recommend reverting that one too (albeit there's no direct collision between the two). Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Kay Sievers <kay@vrfy.org> Cc: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tip revision: 64222515138e43da1fcf288f0289ef1020427b87 authored by Linus Torvalds on 22 October 2021, 05:06:08 UTC
Merge tag 'drm-fixes-2021-10-22' of git://anongit.freedesktop.org/drm/drm
Merge tag 'drm-fixes-2021-10-22' of git://anongit.freedesktop.org/drm/drm
Tip revision: 6422251
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COPYING | -rw-r--r-- | 18.3 KB |
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Makefile | -rw-r--r-- | 46.0 KB |
README | -rw-r--r-- | 17.3 KB |
REPORTING-BUGS | -rw-r--r-- | 3.3 KB |
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