f2fs: close unused open zones while mounting

Zoned UFS allows only 6 open zones at the same time, so we need to take
care of the count of open zones while mounting.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 6db410f..43d537d 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -4810,40 +4810,49 @@ static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
                        break;
        }
 
-       /*
-        * If last valid block is beyond the write pointer, report the
-        * inconsistency. This inconsistency does not cause write error
-        * because the zone will not be selected for write operation until
-        * it get discarded. Just report it.
-        */
-       if (last_valid_block >= wp_block) {
-               f2fs_notice(sbi, "Valid block beyond write pointer: "
-                           "valid block[0x%x,0x%x] wp[0x%x,0x%x]",
-                           GET_SEGNO(sbi, last_valid_block),
-                           GET_BLKOFF_FROM_SEG0(sbi, last_valid_block),
-                           wp_segno, wp_blkoff);
+       // The write pointer matches with the valid blocks
+       if (last_valid_block + 1 == wp_block)
                return 0;
-       }
 
-       /*
-        * If there is no valid block in the zone and if write pointer is
-        * not at zone start, reset the write pointer.
-        */
-       if (last_valid_block + 1 == zone_block && zone->wp != zone->start) {
+       if (last_valid_block + 1 == zone_block) {
+               /*
+                * If there is no valid block in the zone and if write pointer
+                * is not at zone start, reset the write pointer.
+                */
                f2fs_notice(sbi,
                            "Zone without valid block has non-zero write "
                            "pointer. Reset the write pointer: wp[0x%x,0x%x]",
                            wp_segno, wp_blkoff);
                ret = __f2fs_issue_discard_zone(sbi, fdev->bdev, zone_block,
                                        zone->len >> log_sectors_per_block);
-               if (ret) {
+               if (ret)
                        f2fs_err(sbi, "Discard zone failed: %s (errno=%d)",
                                 fdev->path, ret);
-                       return ret;
-               }
+
+               return ret;
        }
 
-       return 0;
+       /*
+        * If there are valid blocks and the write pointer doesn't
+        * match with them, we need to report the inconsistency and
+        * fill the zone till the end to close the zone. This inconsistency
+        * does not cause write error because the zone will not be selected
+        * for write operation until it get discarded.
+        */
+       f2fs_notice(sbi, "Valid blocks are not aligned with write pointer: "
+                   "valid block[0x%x,0x%x] wp[0x%x,0x%x]",
+                   GET_SEGNO(sbi, last_valid_block),
+                   GET_BLKOFF_FROM_SEG0(sbi, last_valid_block),
+                   wp_segno, wp_blkoff);
+
+       ret = blkdev_issue_zeroout(fdev->bdev, zone->wp,
+                               zone->len - (zone->wp - zone->start),
+                               GFP_NOFS, 0);
+       if (ret)
+               f2fs_err(sbi, "Fill up zone failed: %s (errno=%d)",
+                        fdev->path, ret);
+
+       return ret;
 }
 
 static struct f2fs_dev_info *get_target_zoned_dev(struct f2fs_sb_info *sbi,