diff options
Diffstat (limited to 'fs/f2fs/super.c')
| -rw-r--r-- | fs/f2fs/super.c | 96 |
1 files changed, 82 insertions, 14 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 26817b5aeac7..3834ead04620 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -301,10 +301,10 @@ static void f2fs_destroy_casefold_cache(void) { } static inline void limit_reserve_root(struct f2fs_sb_info *sbi) { - block_t limit = min((sbi->user_block_count << 1) / 1000, + block_t limit = min((sbi->user_block_count >> 3), sbi->user_block_count - sbi->reserved_blocks); - /* limit is 0.2% */ + /* limit is 12.5% */ if (test_opt(sbi, RESERVE_ROOT) && F2FS_OPTION(sbi).root_reserved_blocks > limit) { F2FS_OPTION(sbi).root_reserved_blocks = limit; @@ -1342,6 +1342,11 @@ default_check: return -EINVAL; } + if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) { + f2fs_err(sbi, "LFS not compatible with ATGC"); + return -EINVAL; + } + if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) { f2fs_err(sbi, "Allow to mount readonly mode only"); return -EROFS; @@ -1666,9 +1671,8 @@ static int f2fs_freeze(struct super_block *sb) if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY)) return -EINVAL; - /* ensure no checkpoint required */ - if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list)) - return -EINVAL; + /* Let's flush checkpoints and stop the thread. */ + f2fs_flush_ckpt_thread(F2FS_SB(sb)); /* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */ set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING); @@ -2181,6 +2185,9 @@ static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) f2fs_up_write(&sbi->gc_lock); f2fs_sync_fs(sbi->sb, 1); + + /* Let's ensure there's no pending checkpoint anymore */ + f2fs_flush_ckpt_thread(sbi); } static int f2fs_remount(struct super_block *sb, int *flags, char *data) @@ -2346,6 +2353,9 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data) f2fs_stop_ckpt_thread(sbi); need_restart_ckpt = true; } else { + /* Flush if the prevous checkpoint, if exists. */ + f2fs_flush_ckpt_thread(sbi); + err = f2fs_start_ckpt_thread(sbi); if (err) { f2fs_err(sbi, @@ -2465,7 +2475,6 @@ static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, size_t toread; loff_t i_size = i_size_read(inode); struct page *page; - char *kaddr; if (off > i_size) return 0; @@ -2498,9 +2507,7 @@ repeat: return -EIO; } - kaddr = kmap_atomic(page); - memcpy(data, kaddr + offset, tocopy); - kunmap_atomic(kaddr); + memcpy_from_page(data, page, offset, tocopy); f2fs_put_page(page, 1); offset = 0; @@ -2522,7 +2529,6 @@ static ssize_t f2fs_quota_write(struct super_block *sb, int type, size_t towrite = len; struct page *page; void *fsdata = NULL; - char *kaddr; int err = 0; int tocopy; @@ -2541,10 +2547,7 @@ retry: break; } - kaddr = kmap_atomic(page); - memcpy(kaddr + offset, data, tocopy); - kunmap_atomic(kaddr); - flush_dcache_page(page); + memcpy_to_page(page, offset, data, tocopy); a_ops->write_end(NULL, mapping, off, tocopy, tocopy, page, fsdata); @@ -3843,6 +3846,68 @@ int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) return err; } +void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason) +{ + struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); + int err; + + f2fs_down_write(&sbi->sb_lock); + + if (raw_super->s_stop_reason[reason] < ((1 << BITS_PER_BYTE) - 1)) + raw_super->s_stop_reason[reason]++; + + err = f2fs_commit_super(sbi, false); + if (err) + f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d", + reason, err); + f2fs_up_write(&sbi->sb_lock); +} + +static void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag) +{ + spin_lock(&sbi->error_lock); + if (!test_bit(flag, (unsigned long *)sbi->errors)) { + set_bit(flag, (unsigned long *)sbi->errors); + sbi->error_dirty = true; + } + spin_unlock(&sbi->error_lock); +} + +static bool f2fs_update_errors(struct f2fs_sb_info *sbi) +{ + bool need_update = false; + + spin_lock(&sbi->error_lock); + if (sbi->error_dirty) { + memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors, + MAX_F2FS_ERRORS); + sbi->error_dirty = false; + need_update = true; + } + spin_unlock(&sbi->error_lock); + + return need_update; +} + +void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error) +{ + int err; + + f2fs_save_errors(sbi, error); + + f2fs_down_write(&sbi->sb_lock); + + if (!f2fs_update_errors(sbi)) + goto out_unlock; + + err = f2fs_commit_super(sbi, false); + if (err) + f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d", + error, err); +out_unlock: + f2fs_up_write(&sbi->sb_lock); +} + static int f2fs_scan_devices(struct f2fs_sb_info *sbi) { struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); @@ -4190,6 +4255,9 @@ try_onemore: goto free_devices; } + spin_lock_init(&sbi->error_lock); + memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS); + sbi->total_valid_node_count = le32_to_cpu(sbi->ckpt->valid_node_count); percpu_counter_set(&sbi->total_valid_inode_count, |