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gfs2: Fix oversight in gfs2_ail1_flush

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Ordinarily, function gfs2_ail1_start_one issues a write request
for one item on the ail1 list, then returns -EBUSY. This makes the
caller, gfs2_ail1_flush, loop around and start another. However,
it was not clearing the -EBUSY return code each time through the loop.
So on rare occasions, like when the wbc runs out of nr_to_write, it
remained set to -EBUSY, which triggered an error and withdraw.

This patch sets the return code to 0 each time through the restart
loop so this won't happen anymore.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
This commit is contained in:
Bob Peterson 2020-03-27 15:23:14 -05:00
parent c953a735c7
commit 75b46c437f
1 changed files with 2 additions and 1 deletions
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3
fs/gfs2/log.c
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@ -188,13 +188,14 @@ void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc)
struct list_head *head = &sdp->sd_ail1_list;
struct gfs2_trans *tr;
struct blk_plug plug;
int ret = 0;
int ret;
unsigned long flush_start = jiffies;
trace_gfs2_ail_flush(sdp, wbc, 1);
blk_start_plug(&plug);
spin_lock(&sdp->sd_ail_lock);
restart:
ret = 0;
if (time_after(jiffies, flush_start + (HZ * 600))) {
dump_ail_list(sdp);
goto out;