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authorRajesh Joseph <rjoseph@redhat.com>2016-11-22 22:25:42 +0530
committerNiels de Vos <ndevos@redhat.com>2016-11-29 23:52:42 -0800
commit17d10b42fc4041442e6cd0bfda45944edea498c6 (patch)
tree60abd1b7b5ad506e2b8d5455431188c4d6a08b5f /xlators/protocol
parente34a783557e504f0793f18beb850bcebbb2af7fa (diff)
gfapi: glfs_subvol_done should NOT wait for graph migration.
In graph_setup function glfs_subvol_done is called which is executed in an epoll thread. glfs_lock waits on other thread to finish graph migration. This can lead to dead lock if we consume all the epoll threads. In general any call-back function executed in epoll thread should not call any blocking call which waits on a network reply either directly or indirectly, e.g. syncop functions should not be called in these threads. As a fix we should not wait for migration in the call-back path. Change-Id: If96d0689fe1b4d74631e383048cdc30b01690dc2 BUG: 1397754 Signed-off-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-on: http://review.gluster.org/15913 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Niels de Vos <ndevos@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
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