f2fs: fix inconsistent comments
Lack of maintenance on comments may mislead developers, fix them. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
Jaegeuk Kim
parent
3addc1aed3
commit
7a88ddb560
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@ -50,9 +50,6 @@ repeat:
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return page;
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}
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/*
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* We guarantee no failure on the returned page.
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*/
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static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
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bool is_meta)
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{
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@ -206,7 +203,7 @@ bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
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}
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/*
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* Readahead CP/NAT/SIT/SSA pages
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* Readahead CP/NAT/SIT/SSA/POR pages
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*/
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int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
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int type, bool sync)
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@ -898,7 +895,7 @@ int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
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return -ENOMEM;
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/*
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* Finding out valid cp block involves read both
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* sets( cp pack1 and cp pack 2)
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* sets( cp pack 1 and cp pack 2)
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*/
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cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
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cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
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@ -1385,10 +1382,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
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/* Flush all the NAT/SIT pages */
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f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
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/*
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* modify checkpoint
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* version number is already updated
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*/
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/* start to update checkpoint, cp ver is already updated previously */
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ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true));
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ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
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for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
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@ -1541,9 +1535,6 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
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return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;
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}
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/*
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* We guarantee that this checkpoint procedure will not fail.
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*/
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int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
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{
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struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
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@ -1611,7 +1602,6 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
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f2fs_flush_sit_entries(sbi, cpc);
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/* unlock all the fs_lock[] in do_checkpoint() */
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err = do_checkpoint(sbi, cpc);
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if (err)
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f2fs_release_discard_addrs(sbi);
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@ -1624,7 +1614,7 @@ stop:
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if (cpc->reason & CP_RECOVERY)
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f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);
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/* do checkpoint periodically */
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/* update CP_TIME to trigger checkpoint periodically */
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f2fs_update_time(sbi, CP_TIME);
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trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
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out:
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@ -364,9 +364,6 @@ static void f2fs_write_end_io(struct bio *bio)
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bio_put(bio);
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}
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/*
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* Return true, if pre_bio's bdev is same as its target device.
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*/
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struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
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block_t blk_addr, struct bio *bio)
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{
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@ -403,6 +400,9 @@ int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr)
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return 0;
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}
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/*
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* Return true, if pre_bio's bdev is same as its target device.
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*/
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static bool __same_bdev(struct f2fs_sb_info *sbi,
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block_t blk_addr, struct bio *bio)
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{
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@ -410,9 +410,6 @@ static bool __same_bdev(struct f2fs_sb_info *sbi,
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return bio->bi_disk == b->bd_disk && bio->bi_partno == b->bd_partno;
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}
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/*
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* Low-level block read/write IO operations.
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*/
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static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages)
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{
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struct f2fs_sb_info *sbi = fio->sbi;
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@ -1388,13 +1385,9 @@ void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock)
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}
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/*
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* f2fs_map_blocks() now supported readahead/bmap/rw direct_IO with
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* f2fs_map_blocks structure.
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* If original data blocks are allocated, then give them to blockdev.
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* Otherwise,
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* a. preallocate requested block addresses
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* b. do not use extent cache for better performance
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* c. give the block addresses to blockdev
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* f2fs_map_blocks() tries to find or build mapping relationship which
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* maps continuous logical blocks to physical blocks, and return such
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* info via f2fs_map_blocks structure.
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*/
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int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
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int create, int flag)
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@ -2388,9 +2388,9 @@ static inline block_t datablock_addr(struct inode *inode,
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raw_node = F2FS_NODE(node_page);
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/* from GC path only */
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if (is_inode) {
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if (!inode)
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/* from GC path only */
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base = offset_in_addr(&raw_node->i);
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else if (f2fs_has_extra_attr(inode))
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base = get_extra_isize(inode);
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@ -112,7 +112,6 @@ static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
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}
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}
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/* fill the page */
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f2fs_wait_on_page_writeback(page, DATA, false, true);
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/* wait for GCed page writeback via META_MAPPING */
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@ -192,7 +192,10 @@ static void select_policy(struct f2fs_sb_info *sbi, int gc_type,
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p->ofs_unit = sbi->segs_per_sec;
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}
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/* we need to check every dirty segments in the FG_GC case */
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/*
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* adjust candidates range, should select all dirty segments for
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* foreground GC and urgent GC cases.
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*/
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if (gc_type != FG_GC &&
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(sbi->gc_mode != GC_URGENT) &&
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p->max_search > sbi->max_victim_search)
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@ -776,7 +776,7 @@ no_delete:
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else
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f2fs_inode_synced(inode);
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/* ino == 0, if f2fs_new_inode() was failed t*/
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/* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
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if (inode->i_ino)
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invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
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inode->i_ino);
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@ -177,7 +177,7 @@ static inline int is_extension_exist(const unsigned char *s, const char *sub)
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}
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/*
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* Set multimedia files as cold files for hot/cold data separation
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* Set file's temperature for hot/cold data separation
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*/
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static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
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const unsigned char *name)
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@ -510,9 +510,6 @@ int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
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return nr - nr_shrink;
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}
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/*
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* This function always returns success
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*/
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int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
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struct node_info *ni)
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{
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@ -716,8 +713,7 @@ got:
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/*
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* Caller should call f2fs_put_dnode(dn).
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* Also, it should grab and release a rwsem by calling f2fs_lock_op() and
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* f2fs_unlock_op() only if ro is not set RDONLY_NODE.
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* In the case of RDONLY_NODE, we don't need to care about mutex.
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* f2fs_unlock_op() only if mode is set with ALLOC_NODE.
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*/
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int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
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{
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@ -58,7 +58,7 @@ unsigned long f2fs_shrink_count(struct shrinker *shrink,
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/* count extent cache entries */
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count += __count_extent_cache(sbi);
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/* shrink clean nat cache entries */
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/* count clean nat cache entries */
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count += __count_nat_entries(sbi);
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/* count free nids cache entries */
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@ -1658,7 +1658,7 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
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out_unlock:
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up_write(&sbi->gc_lock);
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restore_flag:
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sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */
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sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
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return err;
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}
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@ -3590,7 +3590,7 @@ try_onemore:
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f2fs_err(sbi, "Cannot turn on quotas: error %d", err);
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}
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#endif
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/* if there are nt orphan nodes free them */
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/* if there are any orphan inodes, free them */
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err = f2fs_recover_orphan_inodes(sbi);
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if (err)
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goto free_meta;
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