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| author | Bob Peterson <rpeterso@redhat.com> | 2019-11-13 14:09:28 -0600 |
|---|---|---|
| committer | Bob Peterson <rpeterso@redhat.com> | 2020-02-27 07:53:18 -0600 |
| commit | 1c634f94c3da39115270d35b3075af970810a927 (patch) | |
| tree | cd2cc44b168f3a562759c4d7194a1e7dcf395c5c /fs/gfs2/glock.c | |
| parent | df5db5f9ee112e76b5202fbc331f990a0fc316d6 (diff) | |
| download | linux-stable-1c634f94c3da39115270d35b3075af970810a927.tar.gz linux-stable-1c634f94c3da39115270d35b3075af970810a927.tar.bz2 linux-stable-1c634f94c3da39115270d35b3075af970810a927.zip | |
gfs2: Do proper error checking for go_sync family of glops functions
Before this patch, function do_xmote would try to sync out the glock
dirty data by calling the appropriate glops function XXX_go_sync()
but it did not check for a good return code. If the sync was not
possible due to an io error or whatever, do_xmote would continue on
and call go_inval and release the glock to other cluster nodes.
When those nodes go to replay the journal, they may already be holding
glocks for the journal records that should have been synced, but were
not due to the ignored error.
This patch introduces proper error code checking to the go_sync
family of glops functions.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/glock.c')
| -rw-r--r-- | fs/gfs2/glock.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 73cb5bcc37a7..0bfa58e5a64e 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -602,8 +602,20 @@ __acquires(&gl->gl_lockref.lock) (lck_flags & (LM_FLAG_TRY|LM_FLAG_TRY_1CB))) clear_bit(GLF_BLOCKING, &gl->gl_flags); spin_unlock(&gl->gl_lockref.lock); - if (glops->go_sync) - glops->go_sync(gl); + if (glops->go_sync) { + ret = glops->go_sync(gl); + /* If we had a problem syncing (due to io errors or whatever, + * we should not invalidate the metadata or tell dlm to + * release the glock to other nodes. + */ + if (ret) { + if (cmpxchg(&sdp->sd_log_error, 0, ret)) { + fs_err(sdp, "Error %d syncing glock \n", ret); + gfs2_dump_glock(NULL, gl, true); + } + return; + } + } if (test_bit(GLF_INVALIDATE_IN_PROGRESS, &gl->gl_flags)) { /* * The call to go_sync should have cleared out the ail list. |