diff options
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 | ||||
| -rw-r--r-- | fs/f2fs/segment.c | 28 |
2 files changed, 29 insertions, 1 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 484b5c6ac36b..cc46c22192ee 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -820,6 +820,8 @@ struct f2fs_sm_info { struct dirty_seglist_info *dirty_info; /* dirty segment information */ struct curseg_info *curseg_array; /* active segment information */ + struct rw_semaphore curseg_lock; /* for preventing curseg change */ + block_t seg0_blkaddr; /* block address of 0'th segment */ block_t main_blkaddr; /* start block address of main area */ block_t ssa_blkaddr; /* start block address of SSA area */ diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 5789d2e622ac..20722b24f801 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2512,6 +2512,8 @@ void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, struct sit_info *sit_i = SIT_I(sbi); struct curseg_info *curseg = CURSEG_I(sbi, type); + down_read(&SM_I(sbi)->curseg_lock); + mutex_lock(&curseg->curseg_mutex); down_write(&sit_i->sentry_lock); @@ -2569,6 +2571,8 @@ void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, } mutex_unlock(&curseg->curseg_mutex); + + up_read(&SM_I(sbi)->curseg_lock); } static void update_device_state(struct f2fs_io_info *fio) @@ -2676,6 +2680,18 @@ int rewrite_data_page(struct f2fs_io_info *fio) return err; } +static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi, + unsigned int segno) +{ + int i; + + for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { + if (CURSEG_I(sbi, i)->segno == segno) + break; + } + return i; +} + void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, block_t old_blkaddr, block_t new_blkaddr, bool recover_curseg, bool recover_newaddr) @@ -2691,6 +2707,8 @@ void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, se = get_seg_entry(sbi, segno); type = se->type; + down_write(&SM_I(sbi)->curseg_lock); + if (!recover_curseg) { /* for recovery flow */ if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { @@ -2700,8 +2718,13 @@ void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, type = CURSEG_WARM_DATA; } } else { - if (!IS_CURSEG(sbi, segno)) + if (IS_CURSEG(sbi, segno)) { + /* se->type is volatile as SSR allocation */ + type = __f2fs_get_curseg(sbi, segno); + f2fs_bug_on(sbi, type == NO_CHECK_TYPE); + } else { type = CURSEG_WARM_DATA; + } } curseg = CURSEG_I(sbi, type); @@ -2741,6 +2764,7 @@ void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, up_write(&sit_i->sentry_lock); mutex_unlock(&curseg->curseg_mutex); + up_write(&SM_I(sbi)->curseg_lock); } void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, @@ -3678,6 +3702,8 @@ int build_segment_manager(struct f2fs_sb_info *sbi) INIT_LIST_HEAD(&sm_info->sit_entry_set); + init_rwsem(&sm_info->curseg_lock); + if (!f2fs_readonly(sbi->sb)) { err = create_flush_cmd_control(sbi); if (err) |