In android, we'd better wait for fstrim completion instead of issuing the
discard commands asynchronous.

Signed-off-by: Jaegeuk Kim <[email protected]>
---
 fs/f2fs/segment.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index f96e61e8ddf7..beb15c834a34 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1076,6 +1076,9 @@ static int __issue_discard_cmd(struct f2fs_sb_info *sbi, 
bool issue_cond)
                        if (dcc->pend_list_tag[i] & P_TRIM) {
                                __submit_discard_cmd(sbi, dc);
                                issued++;
+
+                               if (fatal_signal_pending(current))
+                                       break;
                                continue;
                        }
 
@@ -1192,7 +1195,7 @@ void stop_discard_thread(struct f2fs_sb_info *sbi)
        }
 }
 
-/* This comes from f2fs_put_super */
+/* This comes from f2fs_put_super and f2fs_trim_fs */
 void f2fs_wait_discard_bios(struct f2fs_sb_info *sbi)
 {
        __issue_discard_cmd(sbi, false);
@@ -2227,6 +2230,7 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct 
fstrim_range *range)
        }
        /* It's time to issue all the filed discards */
        mark_discard_range_all(sbi);
+       f2fs_wait_discard_bios(sbi);
 out:
        range->len = F2FS_BLK_TO_BYTES(cpc.trimmed);
        return err;
-- 
2.14.0.rc1.383.gd1ce394fe2-goog


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