gfs2: gfs2_log_flush withdraw fixes

When a withdraw occurs in gfs2_log_flush() and we are left with an unsubmitted
bio, fail that bio.  Otherwise, the bh's in that bio will remain locked and
gfs2_evict_inode() -> truncate_inode_pages() -> gfs2_invalidate_folio() ->
gfs2_discard() will hang trying to discard the locked bh's.

In addition, when gfs2_log_flush() fails to submit a new transaction, unpin the
buffers in the failing transaction like gfs2_remove_from_journal() does.  If
any of the bd's are on the ail2 list, leave them there and do_withdraw() ->
gfs2_withdraw_glocks() -> inode_go_inval() -> truncate_inode_pages() ->
gfs2_invalidate_folio() -> gfs2_discard() will remove them.  They will be freed
in gfs2_release_folio().

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

0 files changed, 0 insertions, 0 deletions