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authorDavid Howells <dhowells@redhat.com>2019-02-22 01:04:32 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-02-25 22:59:07 +0300
commit7d762d69145a54d169f58e56d6dac57a5508debc (patch)
treeb97efe5d1d719283a95fcbce623160524723c587
parent29b00e609960ae0fcff382f4c7079dd0874a5311 (diff)
downloadlinux-7d762d69145a54d169f58e56d6dac57a5508debc.tar.xz
afs: Fix manually set volume location server list
When a cell with a volume location server list is added manually by echoing the details into /proc/net/afs/cells, a record is added but the flag saying it has been looked up isn't set. This causes the VL server rotation code to wait forever, with the top of /proc/pid/stack looking like: afs_select_vlserver+0x3a6/0x6f3 afs_vl_lookup_vldb+0x4b/0x92 afs_create_volume+0x25/0x1b9 ... with the thread stuck in afs_start_vl_iteration() waiting for AFS_CELL_FL_NO_LOOKUP_YET to be cleared. Fix this by clearing AFS_CELL_FL_NO_LOOKUP_YET when setting up a record if that record's details were supplied manually. Fixes: 0a5143f2f89c ("afs: Implement VL server rotation") Reported-by: Dave Botsch <dwb7@cornell.edu> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/afs/cell.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/afs/cell.c b/fs/afs/cell.c
index cf445dbd5f2e..9de46116c749 100644
--- a/fs/afs/cell.c
+++ b/fs/afs/cell.c
@@ -173,6 +173,7 @@ static struct afs_cell *afs_alloc_cell(struct afs_net *net,
rcu_assign_pointer(cell->vl_servers, vllist);
cell->dns_expiry = TIME64_MAX;
+ __clear_bit(AFS_CELL_FL_NO_LOOKUP_YET, &cell->flags);
} else {
cell->dns_expiry = ktime_get_real_seconds();
}