Merge tag 'f2fs-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've introduced fairly small number of patches as below.

  Enhancements:
   - improve the in-place-update IO flow
   - allocate segment to guarantee no GC for pinned files

  Bug fixes:
   - fix updatetime in lazytime mode
   - potential memory leak in f2fs_listxattr
   - record parent inode number in rename2 correctly
   - fix deadlock in f2fs_gc along with atomic writes
   - avoid needless data migration in GC"

* tag 'f2fs-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
  f2fs: stop GC when the victim becomes fully valid
  f2fs: expose main_blkaddr in sysfs
  f2fs: choose hardlimit when softlimit is larger than hardlimit in f2fs_statfs_project()
  f2fs: Fix deadlock in f2fs_gc() context during atomic files handling
  f2fs: show f2fs instance in printk_ratelimited
  f2fs: fix potential overflow
  f2fs: fix to update dir's i_pino during cross_rename
  f2fs: support aligned pinned file
  f2fs: avoid kernel panic on corruption test
  f2fs: fix wrong description in document
  f2fs: cache global IPU bio
  f2fs: fix to avoid memory leakage in f2fs_listxattr
  f2fs: check total_segments from devices in raw_super
  f2fs: update multi-dev metadata in resize_fs
  f2fs: mark recovery flag correctly in read_raw_super_block()
  f2fs: fix to update time in lazytime mode

fs/f2fs/super.c

@@ -1213,9 +1213,13 @@ static int f2fs_statfs_project(struct super_block *sb,
 		return PTR_ERR(dquot);
 	spin_lock(&dquot->dq_dqb_lock);
 
-	limit = (dquot->dq_dqb.dqb_bsoftlimit ?
-		 dquot->dq_dqb.dqb_bsoftlimit :
-		 dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits;
+	limit = 0;
+	if (dquot->dq_dqb.dqb_bsoftlimit)
+		limit = dquot->dq_dqb.dqb_bsoftlimit;
+	if (dquot->dq_dqb.dqb_bhardlimit &&
+			(!limit || dquot->dq_dqb.dqb_bhardlimit < limit))
+		limit = dquot->dq_dqb.dqb_bhardlimit;
+
 	if (limit && buf->f_blocks > limit) {
 		curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits;
 		buf->f_blocks = limit;
@@ -1224,9 +1228,13 @@ static int f2fs_statfs_project(struct super_block *sb,
 			 (buf->f_blocks - curblock) : 0;
 	}
 
-	limit = dquot->dq_dqb.dqb_isoftlimit ?
-		dquot->dq_dqb.dqb_isoftlimit :
-		dquot->dq_dqb.dqb_ihardlimit;
+	limit = 0;
+	if (dquot->dq_dqb.dqb_isoftlimit)
+		limit = dquot->dq_dqb.dqb_isoftlimit;
+	if (dquot->dq_dqb.dqb_ihardlimit &&
+			(!limit || dquot->dq_dqb.dqb_ihardlimit < limit))
+		limit = dquot->dq_dqb.dqb_ihardlimit;
+
 	if (limit && buf->f_files > limit) {
 		buf->f_files = limit;
 		buf->f_ffree =
@@ -2618,6 +2626,21 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
 		return -EFSCORRUPTED;
 	}
 
+	if (RDEV(0).path[0]) {
+		block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments);
+		int i = 1;
+
+		while (i < MAX_DEVICES && RDEV(i).path[0]) {
+			dev_seg_count += le32_to_cpu(RDEV(i).total_segments);
+			i++;
+		}
+		if (segment_count != dev_seg_count) {
+			f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)",
+					segment_count, dev_seg_count);
+			return -EFSCORRUPTED;
+		}
+	}
+
 	if (secs_per_zone > total_sections || !secs_per_zone) {
 		f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)",
 			  secs_per_zone, total_sections);
@@ -2852,6 +2875,7 @@ static void init_sb_info(struct f2fs_sb_info *sbi)
 	spin_lock_init(&sbi->dev_lock);
 
 	init_rwsem(&sbi->sb_lock);
+	init_rwsem(&sbi->pin_sem);
 }
 
 static int init_percpu_info(struct f2fs_sb_info *sbi)
@@ -2946,6 +2970,7 @@ static int read_raw_super_block(struct f2fs_sb_info *sbi,
 			f2fs_err(sbi, "Unable to read %dth superblock",
 				 block + 1);
 			err = -EIO;
+			*recovery = 1;
 			continue;
 		}
 
@@ -2955,6 +2980,7 @@ static int read_raw_super_block(struct f2fs_sb_info *sbi,
 			f2fs_err(sbi, "Can't find valid F2FS filesystem in %dth superblock",
 				 block + 1);
 			brelse(bh);
+			*recovery = 1;
 			continue;
 		}
 
@@ -2967,10 +2993,6 @@ static int read_raw_super_block(struct f2fs_sb_info *sbi,
 		brelse(bh);
 	}
 
-	/* Fail to read any one of the superblocks*/
-	if (err < 0)
-		*recovery = 1;
-
 	/* No valid superblock */
 	if (!*raw_super)
 		kvfree(super);
@@ -3324,6 +3346,8 @@ try_onemore:
 			sbi->write_io[i][j].bio = NULL;
 			spin_lock_init(&sbi->write_io[i][j].io_lock);
 			INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
+			INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
+			init_rwsem(&sbi->write_io[i][j].bio_list_lock);
 		}
 	}
 
@@ -3735,8 +3759,13 @@ static int __init init_f2fs_fs(void)
 	err = f2fs_init_post_read_processing();
 	if (err)
 		goto free_root_stats;
+	err = f2fs_init_bio_entry_cache();
+	if (err)
+		goto free_post_read;
 	return 0;
 
+free_post_read:
+	f2fs_destroy_post_read_processing();
 free_root_stats:
 	f2fs_destroy_root_stats();
 	unregister_filesystem(&f2fs_fs_type);
@@ -3760,6 +3789,7 @@ fail:
 
 static void __exit exit_f2fs_fs(void)
 {
+	f2fs_destroy_bio_entry_cache();
 	f2fs_destroy_post_read_processing();
 	f2fs_destroy_root_stats();
 	unregister_filesystem(&f2fs_fs_type);