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| author |   Bob Peterson <rpeterso@redhat.com> | 2020-08-18 08:05:14 -0500 |
|---|---|---|
| committer |   Andreas Gruenbacher <agruenba@redhat.com> | 2020-10-15 14:29:03 +0200 |
| commit | 36c783092d49ae71fa87963de9bb5bd9daf4d8c2 (patch) | |
| tree | ffcdb2c19ef0e236eb58672f830fa56bb3bcbb9c /fs/gfs2 | |
| parent | gfs2: Wipe jdata and ail1 in gfs2_journal_wipe, formerly gfs2_meta_wipe (diff) | |
| download | linux-dev-36c783092d49ae71fa87963de9bb5bd9daf4d8c2.tar.xz linux-dev-36c783092d49ae71fa87963de9bb5bd9daf4d8c2.zip | |
gfs2: make gfs2_ail1_empty_one return the count of active items
This patch is one baby step toward simplifying the journal management.
It simply changes function gfs2_ail1_empty_one from a void to an int and
makes it return a count of active items. This allows the caller to check
the return code rather than list_empty on the tr_ail1_list. This way
we can, in a later patch, combine transaction ail1 and ail2 lists.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2')
| -rw-r--r-- | fs/gfs2/log.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index cd225ccce8e0..9133b3178677 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -244,13 +244,15 @@ static void gfs2_ail1_start(struct gfs2_sbd *sdp) * @tr: the transaction * @max_revokes: If nonzero, issue revokes for the bd items for written buffers * + * returns: the transaction's count of remaining active items */ -static void gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_trans *tr, +static int gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_trans *tr, int *max_revokes) { struct gfs2_bufdata *bd, *s; struct buffer_head *bh; + int active_count = 0; list_for_each_entry_safe_reverse(bd, s, &tr->tr_ail1_list, bd_ail_st_list) { @@ -265,8 +267,10 @@ static void gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_trans *tr, * If the ail buffer is not busy and caught an error, flag it * for others. */ - if (!sdp->sd_log_error && buffer_busy(bh)) + if (!sdp->sd_log_error && buffer_busy(bh)) { + active_count++; continue; + } if (!buffer_uptodate(bh) && !cmpxchg(&sdp->sd_log_error, 0, -EIO)) { gfs2_io_error_bh(sdp, bh); @@ -285,6 +289,7 @@ static void gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_trans *tr, } list_move(&bd->bd_ail_st_list, &tr->tr_ail2_list); } + return active_count; } /** @@ -303,8 +308,7 @@ static int gfs2_ail1_empty(struct gfs2_sbd *sdp, int max_revokes) spin_lock(&sdp->sd_ail_lock); list_for_each_entry_safe_reverse(tr, s, &sdp->sd_ail1_list, tr_list) { - gfs2_ail1_empty_one(sdp, tr, &max_revokes); - if (list_empty(&tr->tr_ail1_list) && oldest_tr) + if (!gfs2_ail1_empty_one(sdp, tr, &max_revokes) && oldest_tr) list_move(&tr->tr_list, &sdp->sd_ail2_list); else oldest_tr = 0; |