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| author | Bob Peterson <rpeterso@redhat.com> | 2019-11-14 09:52:54 -0500 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2019-11-14 19:46:43 +0100 |
| commit | f155f5e01090beb317698df00629b7af4e18df6b (patch) | |
| tree | 97273fb0c7743cb7ea787cc79b7f8d3a3f2a7992 /fs/gfs2/log.c | |
| parent | eb43e660c094029fc1165e2641ce06c153129bdd (diff) | |
| download | linux-f155f5e01090beb317698df00629b7af4e18df6b.tar.gz linux-f155f5e01090beb317698df00629b7af4e18df6b.tar.bz2 linux-f155f5e01090beb317698df00629b7af4e18df6b.zip | |
gfs2: fix infinite loop in gfs2_ail1_flush on io error
Before this patch, an IO error encountered in function gfs2_ail1_flush
would cause a deadlock: because of the io error (and its resulting
withdrawn state), buffers stopped being written to the journal.
Buffers would remain on the ail1 list, so gfs2_ail1_start_one would
return 1 to indicate dirty buffers were still on the ail1 list.
However, when function gfs2_ail1_flush got a non-zero return code,
it would goto restart to retry the writes, which meant it would never
finish, and thus the infinite loop.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/log.c')
| -rw-r--r-- | fs/gfs2/log.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 68af71eb28c6..72c8f30b1822 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -161,7 +161,8 @@ restart: list_for_each_entry_reverse(tr, head, tr_list) { if (wbc->nr_to_write <= 0) break; - if (gfs2_ail1_start_one(sdp, wbc, tr, &withdraw)) + if (gfs2_ail1_start_one(sdp, wbc, tr, &withdraw) && + !gfs2_withdrawn(sdp)) goto restart; } spin_unlock(&sdp->sd_ail_lock); |