fs/ntfs3: Code formatting and refactoring

Added minor refactoring.
Added and fixed some comments.
In some places, the code has been reformatted to fit into 80 columns.
clang-format-12 was used to format code according kernel's .clang-format.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

fs/ntfs3/attrib.c

@@ -405,8 +405,8 @@ int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type,
 	int err = 0;
 	struct ntfs_sb_info *sbi = ni->mi.sbi;
 	u8 cluster_bits = sbi->cluster_bits;
-	bool is_mft =
-		ni->mi.rno == MFT_REC_MFT && type == ATTR_DATA && !name_len;
+	bool is_mft = ni->mi.rno == MFT_REC_MFT && type == ATTR_DATA &&
+		      !name_len;
 	u64 old_valid, old_size, old_alloc, new_alloc, new_alloc_tmp;
 	struct ATTRIB *attr = NULL, *attr_b;
 	struct ATTR_LIST_ENTRY *le, *le_b;
@@ -531,11 +531,10 @@ int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type,
 			pre_alloc = 0;
 			if (type == ATTR_DATA && !name_len &&
 			    sbi->options->prealloc) {
-				pre_alloc =
-					bytes_to_cluster(
-						sbi,
-						get_pre_allocated(new_size)) -
-					new_alen;
+				pre_alloc = bytes_to_cluster(
+						    sbi, get_pre_allocated(
+								 new_size)) -
+					    new_alen;
 			}
 
 			/* Get the last LCN to allocate from. */
@@ -573,8 +572,8 @@ int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type,
 			err = attr_allocate_clusters(
 				sbi, run, vcn, lcn, to_allocate, &pre_alloc,
 				is_mft ? ALLOCATE_MFT : ALLOCATE_DEF, &alen,
-				is_mft ? 0
-				       : (sbi->record_size -
+				is_mft ? 0 :
+					       (sbi->record_size -
 					  le32_to_cpu(rec->used) + 8) /
 							 3 +
 						 1,

fs/ntfs3/bitmap.c

@@ -40,9 +40,9 @@ static struct kmem_cache *ntfs_enode_cachep;
 
 int __init ntfs3_init_bitmap(void)
 {
-	ntfs_enode_cachep =
-		kmem_cache_create("ntfs3_enode_cache", sizeof(struct e_node), 0,
-				  SLAB_RECLAIM_ACCOUNT, NULL);
+	ntfs_enode_cachep = kmem_cache_create("ntfs3_enode_cache",
+					      sizeof(struct e_node), 0,
+					      SLAB_RECLAIM_ACCOUNT, NULL);
 	return ntfs_enode_cachep ? 0 : -ENOMEM;
 }
 
@@ -286,9 +286,9 @@ static void wnd_add_free_ext(struct wnd_bitmap *wnd, size_t bit, size_t len,
 		if (wnd->uptodated != 1) {
 			/* Check bits before 'bit'. */
 			ib = wnd->zone_bit == wnd->zone_end ||
-					     bit < wnd->zone_end
-				     ? 0
-				     : wnd->zone_end;
+					     bit < wnd->zone_end ?
+					   0 :
+					   wnd->zone_end;
 
 			while (bit > ib && wnd_is_free_hlp(wnd, bit - 1, 1)) {
 				bit -= 1;
@@ -297,9 +297,9 @@ static void wnd_add_free_ext(struct wnd_bitmap *wnd, size_t bit, size_t len,
 
 			/* Check bits after 'end_in'. */
 			ib = wnd->zone_bit == wnd->zone_end ||
-					     end_in > wnd->zone_bit
-				     ? wnd->nbits
-				     : wnd->zone_bit;
+					     end_in > wnd->zone_bit ?
+					   wnd->nbits :
+					   wnd->zone_bit;
 
 			while (end_in < ib && wnd_is_free_hlp(wnd, end_in, 1)) {
 				end_in += 1;
@@ -417,8 +417,8 @@ static void wnd_remove_free_ext(struct wnd_bitmap *wnd, size_t bit, size_t len)
 			return;
 		n3 = rb_first(&wnd->count_tree);
 		wnd->extent_max =
-			n3 ? rb_entry(n3, struct e_node, count.node)->count.key
-			   : 0;
+			n3 ? rb_entry(n3, struct e_node, count.node)->count.key :
+				   0;
 		return;
 	}
 

fs/ntfs3/file.c

@@ -22,20 +22,21 @@ static int ntfs_ioctl_fitrim(struct ntfs_sb_info *sbi, unsigned long arg)
 {
 	struct fstrim_range __user *user_range;
 	struct fstrim_range range;
+	struct block_device *dev;
 	int err;
 
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
 
-	if (!bdev_max_discard_sectors(sbi->sb->s_bdev))
+	dev = sbi->sb->s_bdev;
+	if (!bdev_max_discard_sectors(dev))
 		return -EOPNOTSUPP;
 
 	user_range = (struct fstrim_range __user *)arg;
 	if (copy_from_user(&range, user_range, sizeof(range)))
 		return -EFAULT;
 
-	range.minlen = max_t(u32, range.minlen,
-			     bdev_discard_granularity(sbi->sb->s_bdev));
+	range.minlen = max_t(u32, range.minlen, bdev_discard_granularity(dev));
 
 	err = ntfs_trim_fs(sbi, &range);
 	if (err < 0)
@@ -190,8 +191,8 @@ static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to)
 
 	for (; idx < idx_end; idx += 1, from = 0) {
 		page_off = (loff_t)idx << PAGE_SHIFT;
-		to = (page_off + PAGE_SIZE) > vbo_to ? (vbo_to - page_off)
-						     : PAGE_SIZE;
+		to = (page_off + PAGE_SIZE) > vbo_to ? (vbo_to - page_off) :
+							     PAGE_SIZE;
 		iblock = page_off >> inode->i_blkbits;
 
 		page = find_or_create_page(mapping, idx,
@@ -564,13 +565,14 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
 		ni_unlock(ni);
 	} else {
 		/* Check new size. */
+		u8 cluster_bits = sbi->cluster_bits;
 
 		/* generic/213: expected -ENOSPC instead of -EFBIG. */
 		if (!is_supported_holes) {
 			loff_t to_alloc = new_size - inode_get_bytes(inode);
 
 			if (to_alloc > 0 &&
-			    (to_alloc >> sbi->cluster_bits) >
+			    (to_alloc >> cluster_bits) >
 				    wnd_zeroes(&sbi->used.bitmap)) {
 				err = -ENOSPC;
 				goto out;
@@ -591,7 +593,7 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
 		}
 
 		if (is_supported_holes) {
-			CLST vcn = vbo >> sbi->cluster_bits;
+			CLST vcn = vbo >> cluster_bits;
 			CLST cend = bytes_to_cluster(sbi, end);
 			CLST cend_v = bytes_to_cluster(sbi, ni->i_valid);
 			CLST lcn, clen;
@@ -1049,8 +1051,8 @@ static ssize_t ntfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
 	if (ret)
 		goto out;
 
-	ret = is_compressed(ni) ? ntfs_compress_write(iocb, from)
-				: __generic_file_write_iter(iocb, from);
+	ret = is_compressed(ni) ? ntfs_compress_write(iocb, from) :
+					__generic_file_write_iter(iocb, from);
 
 out:
 	inode_unlock(inode);
@@ -1102,8 +1104,9 @@ static int ntfs_file_release(struct inode *inode, struct file *file)
 	int err = 0;
 
 	/* If we are last writer on the inode, drop the block reservation. */
-	if (sbi->options->prealloc && ((file->f_mode & FMODE_WRITE) &&
-				      atomic_read(&inode->i_writecount) == 1)) {
+	if (sbi->options->prealloc &&
+	    ((file->f_mode & FMODE_WRITE) &&
+	     atomic_read(&inode->i_writecount) == 1)) {
 		ni_lock(ni);
 		down_write(&ni->file.run_lock);
 

fs/ntfs3/frecord.c

@@ -76,8 +76,8 @@ struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni)
 	const struct ATTRIB *attr;
 
 	attr = mi_find_attr(&ni->mi, NULL, ATTR_STD, NULL, 0, NULL);
-	return attr ? resident_data_ex(attr, sizeof(struct ATTR_STD_INFO))
-		    : NULL;
+	return attr ? resident_data_ex(attr, sizeof(struct ATTR_STD_INFO)) :
+			    NULL;
 }
 
 /*
@@ -91,8 +91,8 @@ struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni)
 
 	attr = mi_find_attr(&ni->mi, NULL, ATTR_STD, NULL, 0, NULL);
 
-	return attr ? resident_data_ex(attr, sizeof(struct ATTR_STD_INFO5))
-		    : NULL;
+	return attr ? resident_data_ex(attr, sizeof(struct ATTR_STD_INFO5)) :
+			    NULL;
 }
 
 /*
@@ -1439,8 +1439,8 @@ int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
 	int err;
 	CLST plen;
 	struct ATTRIB *attr;
-	bool is_ext =
-		(flags & (ATTR_FLAG_SPARSED | ATTR_FLAG_COMPRESSED)) && !svcn;
+	bool is_ext = (flags & (ATTR_FLAG_SPARSED | ATTR_FLAG_COMPRESSED)) &&
+		      !svcn;
 	u32 name_size = ALIGN(name_len * sizeof(short), 8);
 	u32 name_off = is_ext ? SIZEOF_NONRESIDENT_EX : SIZEOF_NONRESIDENT;
 	u32 run_off = name_off + name_size;
@@ -1756,9 +1756,9 @@ int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa)
 	}
 
 	/* Resize nonresident empty attribute in-place only. */
-	new_asize = (new_aflags & (ATTR_FLAG_COMPRESSED | ATTR_FLAG_SPARSED))
-			    ? (SIZEOF_NONRESIDENT_EX + 8)
-			    : (SIZEOF_NONRESIDENT + 8);
+	new_asize = (new_aflags & (ATTR_FLAG_COMPRESSED | ATTR_FLAG_SPARSED)) ?
+				  (SIZEOF_NONRESIDENT_EX + 8) :
+				  (SIZEOF_NONRESIDENT + 8);
 
 	if (!mi_resize_attr(mi, attr, new_asize - le32_to_cpu(attr->size)))
 		return -EOPNOTSUPP;
@@ -2965,14 +2965,14 @@ bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
 {
 	struct ntfs_sb_info *sbi = ni->mi.sbi;
 	struct ATTRIB *attr;
-	u16 de_key_size = de2 ? le16_to_cpu(de2->key_size) : 0;
+	u16 de_key_size;
 
 	switch (undo_step) {
 	case 4:
+		de_key_size = le16_to_cpu(de2->key_size);
 		if (ni_insert_resident(ni, de_key_size, ATTR_NAME, NULL, 0,
-				       &attr, NULL, NULL)) {
+				       &attr, NULL, NULL))
 			return false;
-		}
 		memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), de2 + 1, de_key_size);
 
 		mi_get_ref(&ni->mi, &de2->ref);
@@ -2981,19 +2981,16 @@ bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
 		de2->flags = 0;
 		de2->res = 0;
 
-		if (indx_insert_entry(&dir_ni->dir, dir_ni, de2, sbi, NULL,
-				      1)) {
+		if (indx_insert_entry(&dir_ni->dir, dir_ni, de2, sbi, NULL, 1))
 			return false;
-		}
 		fallthrough;
 
 	case 2:
 		de_key_size = le16_to_cpu(de->key_size);
 
 		if (ni_insert_resident(ni, de_key_size, ATTR_NAME, NULL, 0,
-				       &attr, NULL, NULL)) {
+				       &attr, NULL, NULL))
 			return false;
-		}
 
 		memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), de + 1, de_key_size);
 		mi_get_ref(&ni->mi, &de->ref);
@@ -3162,9 +3159,9 @@ static bool ni_update_parent(struct ntfs_inode *ni, struct NTFS_DUP_INFO *dup,
 			u64 data_size = le64_to_cpu(attr->nres.data_size);
 			__le64 valid_le;
 
-			dup->alloc_size = is_attr_ext(attr)
-						  ? attr->nres.total_size
-						  : attr->nres.alloc_size;
+			dup->alloc_size = is_attr_ext(attr) ?
+							attr->nres.total_size :
+							attr->nres.alloc_size;
 			dup->data_size = attr->nres.data_size;
 
 			if (new_valid > data_size)

fs/ntfs3/fslog.c

@@ -827,10 +827,10 @@ static inline struct RESTART_TABLE *extend_rsttbl(struct RESTART_TABLE *tbl,
 
 	memcpy(rt + 1, tbl + 1, esize * used);
 
-	rt->free_goal = free_goal == ~0u
-				? cpu_to_le32(~0u)
-				: cpu_to_le32(sizeof(struct RESTART_TABLE) +
-					      free_goal * esize);
+	rt->free_goal = free_goal == ~0u ?
+				      cpu_to_le32(~0u) :
+				      cpu_to_le32(sizeof(struct RESTART_TABLE) +
+					    free_goal * esize);
 
 	if (tbl->first_free) {
 		rt->first_free = tbl->first_free;
@@ -1089,9 +1089,9 @@ static inline u64 base_lsn(struct ntfs_log *log,
 		    (lsn < (lsn_to_vbo(log, h_lsn) & ~log->page_mask) ? 1 : 0))
 		   << log->file_data_bits) +
 		  ((((is_log_record_end(hdr) &&
-		      h_lsn <= le64_to_cpu(hdr->record_hdr.last_end_lsn))
-			     ? le16_to_cpu(hdr->record_hdr.next_record_off)
-			     : log->page_size) +
+		      h_lsn <= le64_to_cpu(hdr->record_hdr.last_end_lsn)) ?
+				   le16_to_cpu(hdr->record_hdr.next_record_off) :
+				   log->page_size) +
 		    lsn) >>
 		   3);
 
@@ -1298,9 +1298,9 @@ static void log_init_pg_hdr(struct ntfs_log *log, u32 sys_page_size,
 	if (!log->clst_per_page)
 		log->clst_per_page = 1;
 
-	log->first_page = major_ver >= 2
-				  ? 0x22 * page_size
-				  : ((sys_page_size << 1) + (page_size << 1));
+	log->first_page = major_ver >= 2 ?
+					0x22 * page_size :
+					((sys_page_size << 1) + (page_size << 1));
 	log->major_ver = major_ver;
 	log->minor_ver = minor_ver;
 }
@@ -1512,20 +1512,19 @@ static u32 current_log_avail(struct ntfs_log *log)
 	 * have to compute the free range.
 	 * If there is no oldest lsn then start at the first page of the file.
 	 */
-	oldest_off = (log->l_flags & NTFSLOG_NO_OLDEST_LSN)
-			     ? log->first_page
-			     : (log->oldest_lsn_off & ~log->sys_page_mask);
+	oldest_off = (log->l_flags & NTFSLOG_NO_OLDEST_LSN) ?
+				   log->first_page :
+				   (log->oldest_lsn_off & ~log->sys_page_mask);
 
 	/*
 	 * We will use the next log page offset to compute the next free page.
 	 * If we are going to reuse this page go to the next page.
 	 * If we are at the first page then use the end of the file.
 	 */
-	next_free_off = (log->l_flags & NTFSLOG_REUSE_TAIL)
-				? log->next_page + log->page_size
-				: log->next_page == log->first_page
-					  ? log->l_size
-					  : log->next_page;
+	next_free_off = (log->l_flags & NTFSLOG_REUSE_TAIL) ?
+				      log->next_page + log->page_size :
+			log->next_page == log->first_page ? log->l_size :
+								  log->next_page;
 
 	/* If the two offsets are the same then there is no available space. */
 	if (oldest_off == next_free_off)
@@ -1535,9 +1534,9 @@ static u32 current_log_avail(struct ntfs_log *log)
 	 * this range from the total available pages.
 	 */
 	free_bytes =
-		oldest_off < next_free_off
-			? log->total_avail_pages - (next_free_off - oldest_off)
-			: oldest_off - next_free_off;
+		oldest_off < next_free_off ?
+			      log->total_avail_pages - (next_free_off - oldest_off) :
+			      oldest_off - next_free_off;
 
 	free_bytes >>= log->page_bits;
 	return free_bytes * log->reserved;
@@ -1671,8 +1670,8 @@ static int last_log_lsn(struct ntfs_log *log)
 	}
 
 	best_lsn1 = first_tail ? base_lsn(log, first_tail, first_file_off) : 0;
-	best_lsn2 =
-		second_tail ? base_lsn(log, second_tail, second_file_off) : 0;
+	best_lsn2 = second_tail ? base_lsn(log, second_tail, second_file_off) :
+					0;
 
 	if (first_tail && second_tail) {
 		if (best_lsn1 > best_lsn2) {
@@ -1767,8 +1766,8 @@ static int last_log_lsn(struct ntfs_log *log)
 
 	page_cnt = page_pos = 1;
 
-	curpage_off = seq_base == log->seq_num ? min(log->next_page, page_off)
-					       : log->next_page;
+	curpage_off = seq_base == log->seq_num ? min(log->next_page, page_off) :
+						       log->next_page;
 
 	wrapped_file =
 		curpage_off == log->first_page &&
@@ -1826,9 +1825,9 @@ static int last_log_lsn(struct ntfs_log *log)
 			    le64_to_cpu(cur_page->record_hdr.last_end_lsn) &&
 		    ((lsn_cur >> log->file_data_bits) +
 		     ((curpage_off <
-		       (lsn_to_vbo(log, lsn_cur) & ~log->page_mask))
-			      ? 1
-			      : 0)) != expected_seq) {
+		       (lsn_to_vbo(log, lsn_cur) & ~log->page_mask)) ?
+				    1 :
+				    0)) != expected_seq) {
 			goto check_tail;
 		}
 
@@ -2642,9 +2641,10 @@ static inline bool check_index_root(const struct ATTRIB *attr,
 {
 	bool ret;
 	const struct INDEX_ROOT *root = resident_data(attr);
-	u8 index_bits = le32_to_cpu(root->index_block_size) >= sbi->cluster_size
-				? sbi->cluster_bits
-				: SECTOR_SHIFT;
+	u8 index_bits = le32_to_cpu(root->index_block_size) >=
+					sbi->cluster_size ?
+				      sbi->cluster_bits :
+				      SECTOR_SHIFT;
 	u8 block_clst = root->index_block_clst;
 
 	if (le32_to_cpu(attr->res.data_size) < sizeof(struct INDEX_ROOT) ||
@@ -3683,7 +3683,8 @@ static int do_action(struct ntfs_log *log, struct OPEN_ATTR_ENRTY *oe,
 
 	if (a_dirty) {
 		attr = oa->attr;
-		err = ntfs_sb_write_run(sbi, oa->run1, vbo, buffer_le, bytes, 0);
+		err = ntfs_sb_write_run(sbi, oa->run1, vbo, buffer_le, bytes,
+					0);
 		if (err)
 			goto out;
 	}
@@ -3768,11 +3769,10 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
 	if (!log)
 		return -ENOMEM;
 
-	memset(&rst_info, 0, sizeof(struct restart_info));
-
 	log->ni = ni;
 	log->l_size = l_size;
 	log->one_page_buf = kmalloc(page_size, GFP_NOFS);
+
 	if (!log->one_page_buf) {
 		err = -ENOMEM;
 		goto out;
@@ -3783,6 +3783,7 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
 	log->page_bits = blksize_bits(page_size);
 
 	/* Look for a restart area on the disk. */
+	memset(&rst_info, 0, sizeof(struct restart_info));
 	err = log_read_rst(log, l_size, true, &rst_info);
 	if (err)
 		goto out;
@@ -3859,10 +3860,10 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
 	log->init_ra = !!rst_info.vbo;
 
 	/* If we have a valid page then grab a pointer to the restart area. */
-	ra2 = rst_info.valid_page
-		      ? Add2Ptr(rst_info.r_page,
-				le16_to_cpu(rst_info.r_page->ra_off))
-		      : NULL;
+	ra2 = rst_info.valid_page ?
+			    Add2Ptr(rst_info.r_page,
+			      le16_to_cpu(rst_info.r_page->ra_off)) :
+			    NULL;
 
 	if (rst_info.chkdsk_was_run ||
 	    (ra2 && ra2->client_idx[1] == LFS_NO_CLIENT_LE)) {

fs/ntfs3/fsntfs.c

@@ -172,8 +172,8 @@ int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes,
 	u16 sample, fo, fn;
 
 	fo = le16_to_cpu(rhdr->fix_off);
-	fn = simple ? ((bytes >> SECTOR_SHIFT) + 1)
-		    : le16_to_cpu(rhdr->fix_num);
+	fn = simple ? ((bytes >> SECTOR_SHIFT) + 1) :
+			    le16_to_cpu(rhdr->fix_num);
 
 	/* Check errors. */
 	if ((fo & 1) || fo + fn * sizeof(short) > SECTOR_SIZE || !fn-- ||
@@ -849,14 +849,13 @@ void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait)
 	u32 blocksize, bytes;
 	sector_t block1, block2;
 
-	if (!sb)
+	/*
+	 * sb can be NULL here. In this case sbi->flags should be 0 too.
+	 */
+	if (!sb || !(sbi->flags & NTFS_FLAGS_MFTMIRR))
 		return;
 
 	blocksize = sb->s_blocksize;
-
-	if (!(sbi->flags & NTFS_FLAGS_MFTMIRR))
-		return;
-
 	bytes = sbi->mft.recs_mirr << sbi->record_bits;
 	block1 = sbi->mft.lbo >> sb->s_blocksize_bits;
 	block2 = sbi->mft.lbo2 >> sb->s_blocksize_bits;

fs/ntfs3/index.c

@@ -431,8 +431,9 @@ static int scan_nres_bitmap(struct ntfs_inode *ni, struct ATTRIB *bitmap,
 		if (vbo + blocksize > data_size)
 			nbits = 8 * (data_size - vbo);
 
-		ok = nbits > from ? (*fn)((ulong *)bh->b_data, from, nbits, ret)
-				  : false;
+		ok = nbits > from ?
+				   (*fn)((ulong *)bh->b_data, from, nbits, ret) :
+				   false;
 		put_bh(bh);
 
 		if (ok) {
@@ -764,8 +765,7 @@ static struct NTFS_DE *hdr_find_e(const struct ntfs_index *indx,
 				return NULL;
 
 			max_idx = 0;
-			table_size = min(table_size * 2,
-					 (int)ARRAY_SIZE(offs));
+			table_size = min(table_size * 2, (int)ARRAY_SIZE(offs));
 			goto fill_table;
 		}
 	} else if (diff2 < 0) {
@@ -1170,8 +1170,10 @@ int indx_find(struct ntfs_index *indx, struct ntfs_inode *ni,
 
 		/* Read next level. */
 		err = indx_read(indx, ni, de_get_vbn(e), &node);
-		if (err)
+		if (err) {
+			/* io error? */
 			return err;
+		}
 
 		/* Lookup entry that is <= to the search value. */
 		e = hdr_find_e(indx, &node->index->ihdr, key, key_len, ctx,
@@ -1673,9 +1675,9 @@ static int indx_insert_into_root(struct ntfs_index *indx, struct ntfs_inode *ni,
 	mi->dirty = true;
 
 	/* Create alloc and bitmap attributes (if not). */
-	err = run_is_empty(&indx->alloc_run)
-		      ? indx_create_allocate(indx, ni, &new_vbn)
-		      : indx_add_allocate(indx, ni, &new_vbn);
+	err = run_is_empty(&indx->alloc_run) ?
+			    indx_create_allocate(indx, ni, &new_vbn) :
+			    indx_add_allocate(indx, ni, &new_vbn);
 
 	/* Layout of record may be changed, so rescan root. */
 	root = indx_get_root(indx, ni, &attr, &mi);
@@ -1865,9 +1867,9 @@ indx_insert_into_buffer(struct ntfs_index *indx, struct ntfs_inode *ni,
 	hdr_insert_de(indx,
 		      (*indx->cmp)(new_de + 1, le16_to_cpu(new_de->key_size),
 				   up_e + 1, le16_to_cpu(up_e->key_size),
-				   ctx) < 0
-			      ? hdr2
-			      : hdr1,
+				   ctx) < 0 ?
+				    hdr2 :
+				    hdr1,
 		      new_de, NULL, ctx);
 
 	indx_mark_used(indx, ni, new_vbn >> indx->idx2vbn_bits);
@@ -2337,8 +2339,8 @@ int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
 			err = level ? indx_insert_into_buffer(indx, ni, root,
 							      re, ctx,
 							      fnd->level - 1,
-							      fnd)
-				    : indx_insert_into_root(indx, ni, re, e,
+							      fnd) :
+					    indx_insert_into_root(indx, ni, re, e,
 							    ctx, fnd, 0);
 			kfree(re);
 

fs/ntfs3/inode.c

@@ -262,8 +262,8 @@ static struct inode *ntfs_read_mft(struct inode *inode,
 		if (!attr->nres.alloc_size)
 			goto next_attr;
 
-		run = ino == MFT_REC_BITMAP ? &sbi->used.bitmap.run
-					    : &ni->file.run;
+		run = ino == MFT_REC_BITMAP ? &sbi->used.bitmap.run :
+						    &ni->file.run;
 		break;
 
 	case ATTR_ROOT:
@@ -290,9 +290,9 @@ static struct inode *ntfs_read_mft(struct inode *inode,
 		if (err)
 			goto out;
 
-		mode = sb->s_root
-			       ? (S_IFDIR | (0777 & sbi->options->fs_dmask_inv))
-			       : (S_IFDIR | 0777);
+		mode = sb->s_root ?
+				     (S_IFDIR | (0777 & sbi->options->fs_dmask_inv)) :
+				     (S_IFDIR | 0777);
 		goto next_attr;
 
 	case ATTR_ALLOC:
@@ -449,8 +449,8 @@ static struct inode *ntfs_read_mft(struct inode *inode,
 		ni->std_fa &= ~FILE_ATTRIBUTE_DIRECTORY;
 		inode->i_op = &ntfs_file_inode_operations;
 		inode->i_fop = &ntfs_file_operations;
-		inode->i_mapping->a_ops =
-			is_compressed(ni) ? &ntfs_aops_cmpr : &ntfs_aops;
+		inode->i_mapping->a_ops = is_compressed(ni) ? &ntfs_aops_cmpr :
+								    &ntfs_aops;
 		if (ino != MFT_REC_MFT)
 			init_rwsem(&ni->file.run_lock);
 	} else if (S_ISCHR(mode) || S_ISBLK(mode) || S_ISFIFO(mode) ||
@@ -786,8 +786,8 @@ static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
 	}
 
 	ret = blockdev_direct_IO(iocb, inode, iter,
-				 wr ? ntfs_get_block_direct_IO_W
-				    : ntfs_get_block_direct_IO_R);
+				 wr ? ntfs_get_block_direct_IO_W :
+					    ntfs_get_block_direct_IO_R);
 
 	if (ret > 0)
 		end = vbo + ret;
@@ -846,7 +846,7 @@ int ntfs_set_size(struct inode *inode, u64 new_size)
 }
 
 static int ntfs_resident_writepage(struct folio *folio,
-		struct writeback_control *wbc, void *data)
+				   struct writeback_control *wbc, void *data)
 {
 	struct address_space *mapping = data;
 	struct ntfs_inode *ni = ntfs_i(mapping->host);
@@ -887,8 +887,8 @@ int ntfs_write_begin(struct file *file, struct address_space *mapping,
 
 	*pagep = NULL;
 	if (is_resident(ni)) {
-		struct page *page = grab_cache_page_write_begin(
-			mapping, pos >> PAGE_SHIFT);
+		struct page *page =
+			grab_cache_page_write_begin(mapping, pos >> PAGE_SHIFT);
 
 		if (!page) {
 			err = -ENOMEM;
@@ -920,9 +920,8 @@ int ntfs_write_begin(struct file *file, struct address_space *mapping,
 /*
  * ntfs_write_end - Address_space_operations::write_end.
  */
-int ntfs_write_end(struct file *file, struct address_space *mapping,
-		   loff_t pos, u32 len, u32 copied, struct page *page,
-		   void *fsdata)
+int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos,
+		   u32 len, u32 copied, struct page *page, void *fsdata)
 {
 	struct inode *inode = mapping->host;
 	struct ntfs_inode *ni = ntfs_i(inode);
@@ -1605,8 +1604,8 @@ struct inode *ntfs_create_inode(struct mnt_idmap *idmap,
 	} else if (S_ISREG(mode)) {
 		inode->i_op = &ntfs_file_inode_operations;
 		inode->i_fop = &ntfs_file_operations;
-		inode->i_mapping->a_ops =
-			is_compressed(ni) ? &ntfs_aops_cmpr : &ntfs_aops;
+		inode->i_mapping->a_ops = is_compressed(ni) ? &ntfs_aops_cmpr :
+								    &ntfs_aops;
 		init_rwsem(&ni->file.run_lock);
 	} else {
 		inode->i_op = &ntfs_special_inode_operations;

fs/ntfs3/lznt.c

@@ -296,8 +296,8 @@ static inline ssize_t decompress_chunk(u8 *unc, u8 *unc_end, const u8 *cmpr,
  */
 struct lznt *get_lznt_ctx(int level)
 {
-	struct lznt *r = kzalloc(level ? offsetof(struct lznt, hash)
-				       : sizeof(struct lznt),
+	struct lznt *r = kzalloc(level ? offsetof(struct lznt, hash) :
+					       sizeof(struct lznt),
 				 GFP_NOFS);
 
 	if (r)
@@ -392,9 +392,9 @@ ssize_t decompress_lznt(const void *cmpr, size_t cmpr_size, void *unc,
 			unc_use = err;
 		} else {
 			/* This chunk does not contain compressed data. */
-			unc_use = unc_chunk + LZNT_CHUNK_SIZE > unc_end
-					  ? unc_end - unc_chunk
-					  : LZNT_CHUNK_SIZE;
+			unc_use = unc_chunk + LZNT_CHUNK_SIZE > unc_end ?
+						unc_end - unc_chunk :
+						LZNT_CHUNK_SIZE;
 
 			if (cmpr_chunk + sizeof(chunk_hdr) + unc_use >
 			    cmpr_end) {

fs/ntfs3/namei.c

@@ -433,8 +433,8 @@ static int ntfs_atomic_open(struct inode *dir, struct dentry *dentry,
 
 	inode = ntfs_create_inode(&nop_mnt_idmap, dir, dentry, uni, mode, 0,
 				  NULL, 0, fnd);
-	err = IS_ERR(inode) ? PTR_ERR(inode)
-			    : finish_open(file, dentry, ntfs_file_open);
+	err = IS_ERR(inode) ? PTR_ERR(inode) :
+				    finish_open(file, dentry, ntfs_file_open);
 	dput(d);
 
 out2:

fs/ntfs3/ntfs_fs.h

@@ -338,7 +338,7 @@ enum ntfs_inode_mutex_lock_class {
 };
 
 /*
- * sturct ntfs_inode
+ * struct ntfs_inode
  *
  * Ntfs inode - extends linux inode. consists of one or more MFT inodes.
  */
@@ -699,9 +699,8 @@ int ntfs_get_block(struct inode *inode, sector_t vbn,
 		   struct buffer_head *bh_result, int create);
 int ntfs_write_begin(struct file *file, struct address_space *mapping,
 		     loff_t pos, u32 len, struct page **pagep, void **fsdata);
-int ntfs_write_end(struct file *file, struct address_space *mapping,
-		   loff_t pos, u32 len, u32 copied, struct page *page,
-		   void *fsdata);
+int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos,
+		   u32 len, u32 copied, struct page *page, void *fsdata);
 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc);
 int ntfs_sync_inode(struct inode *inode);
 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1,
@@ -858,7 +857,7 @@ unsigned long ntfs_names_hash(const u16 *name, size_t len, const u16 *upcase,
 /* globals from xattr.c */
 #ifdef CONFIG_NTFS3_FS_POSIX_ACL
 struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap,
-		 struct dentry *dentry, int type);
+			       struct dentry *dentry, int type);
 int ntfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
 		 struct posix_acl *acl, int type);
 int ntfs_init_acl(struct mnt_idmap *idmap, struct inode *inode,

fs/ntfs3/record.c

@@ -419,10 +419,9 @@ struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type,
 	struct ntfs_sb_info *sbi = mi->sbi;
 	u32 used = le32_to_cpu(rec->used);
 	const u16 *upcase = sbi->upcase;
-	int diff;
 
 	/* Can we insert mi attribute? */
-	if (used + asize > mi->sbi->record_size)
+	if (used + asize > sbi->record_size)
 		return NULL;
 
 	/*
@@ -431,7 +430,7 @@ struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type,
 	 */
 	attr = NULL;
 	while ((attr = mi_enum_attr(mi, attr))) {
-		diff = compare_attr(attr, type, name, name_len, upcase);
+		int diff = compare_attr(attr, type, name, name_len, upcase);
 
 		if (diff < 0)
 			continue;
@@ -442,9 +441,11 @@ struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type,
 	}
 
 	if (!attr) {
-		tail = 8; /* Not used, just to suppress warning. */
+		/* Append. */
+		tail = 8;
 		attr = Add2Ptr(rec, used - 8);
 	} else {
+		/* Insert before 'attr'. */
 		tail = used - PtrOffset(rec, attr);
 	}
 

fs/ntfs3/run.c

@@ -433,9 +433,9 @@ bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len,
 			should_add_tail = Tovcn < r->len;
 
 			if (should_add_tail) {
-				tail_lcn = r->lcn == SPARSE_LCN
-						   ? SPARSE_LCN
-						   : (r->lcn + Tovcn);
+				tail_lcn = r->lcn == SPARSE_LCN ?
+							 SPARSE_LCN :
+							 (r->lcn + Tovcn);
 				tail_vcn = r->vcn + Tovcn;
 				tail_len = r->len - Tovcn;
 			}

fs/ntfs3/super.c

@@ -39,10 +39,10 @@
  * To mount large volumes as ntfs one should use large cluster size (up to 2M)
  * The maximum volume size in this case is 2^32 * 2^21 = 2^53 = 8P
  *
- *     ntfs limits, cluster size is 2M (2^31)
+ *     ntfs limits, cluster size is 2M (2^21)
  * -----------------------------------------------------------------------------
- * | < 8P, 2^54    |  < 2^32  |  yes     |  yes   |   yes    |  yes   |  yes   |
- * | > 8P, 2^54    |  > 2^32  |  no      |  no    |   yes    |  yes   |  yes   |
+ * | < 8P, 2^53    |  < 2^32  |  yes     |  yes   |   yes    |  yes   |  yes   |
+ * | > 8P, 2^53    |  > 2^32  |  no      |  no    |   yes    |  yes   |  yes   |
  * ----------------------------------------------------------|------------------
  *
  */
@@ -115,9 +115,9 @@ void ntfs_inode_printk(struct inode *inode, const char *fmt, ...)
 		return;
 
 	/* Use static allocated buffer, if possible. */
-	name = atomic_dec_and_test(&s_name_buf_cnt)
-		       ? s_name_buf
-		       : kmalloc(sizeof(s_name_buf), GFP_NOFS);
+	name = atomic_dec_and_test(&s_name_buf_cnt) ?
+			     s_name_buf :
+			     kmalloc(sizeof(s_name_buf), GFP_NOFS);
 
 	if (name) {
 		struct dentry *de = d_find_alias(inode);
@@ -369,7 +369,8 @@ static int ntfs_fs_parse_param(struct fs_context *fc,
 #ifdef CONFIG_NTFS3_FS_POSIX_ACL
 			fc->sb_flags |= SB_POSIXACL;
 #else
-			return invalf(fc, "ntfs3: Support for ACL not compiled in!");
+			return invalf(
+				fc, "ntfs3: Support for ACL not compiled in!");
 #endif
 		else
 			fc->sb_flags &= ~SB_POSIXACL;
@@ -404,24 +405,29 @@ static int ntfs_fs_reconfigure(struct fs_context *fc)
 
 	ro_rw = sb_rdonly(sb) && !(fc->sb_flags & SB_RDONLY);
 	if (ro_rw && (sbi->flags & NTFS_FLAGS_NEED_REPLAY)) {
-		errorf(fc, "ntfs3: Couldn't remount rw because journal is not replayed. Please umount/remount instead\n");
+		errorf(fc,
+		       "ntfs3: Couldn't remount rw because journal is not replayed. Please umount/remount instead\n");
 		return -EINVAL;
 	}
 
 	new_opts->nls = ntfs_load_nls(new_opts->nls_name);
 	if (IS_ERR(new_opts->nls)) {
 		new_opts->nls = NULL;
-		errorf(fc, "ntfs3: Cannot load iocharset %s", new_opts->nls_name);
+		errorf(fc, "ntfs3: Cannot load iocharset %s",
+		       new_opts->nls_name);
 		return -EINVAL;
 	}
 	if (new_opts->nls != sbi->options->nls)
-		return invalf(fc, "ntfs3: Cannot use different iocharset when remounting!");
+		return invalf(
+			fc,
+			"ntfs3: Cannot use different iocharset when remounting!");
 
 	sync_filesystem(sb);
 
 	if (ro_rw && (sbi->volume.flags & VOLUME_FLAG_DIRTY) &&
 	    !new_opts->force) {
-		errorf(fc, "ntfs3: Volume is dirty and \"force\" flag is not set!");
+		errorf(fc,
+		       "ntfs3: Volume is dirty and \"force\" flag is not set!");
 		return -EINVAL;
 	}
 
@@ -539,10 +545,8 @@ static int ntfs_show_options(struct seq_file *m, struct dentry *root)
 	struct ntfs_mount_options *opts = sbi->options;
 	struct user_namespace *user_ns = seq_user_ns(m);
 
-	seq_printf(m, ",uid=%u",
-		  from_kuid_munged(user_ns, opts->fs_uid));
-	seq_printf(m, ",gid=%u",
-		  from_kgid_munged(user_ns, opts->fs_gid));
+	seq_printf(m, ",uid=%u", from_kuid_munged(user_ns, opts->fs_uid));
+	seq_printf(m, ",gid=%u", from_kgid_munged(user_ns, opts->fs_gid));
 	if (opts->fmask)
 		seq_printf(m, ",fmask=%04o", opts->fs_fmask_inv ^ 0xffff);
 	if (opts->dmask)
@@ -699,7 +703,7 @@ static u32 true_sectors_per_clst(const struct NTFS_BOOT *boot)
 	if (boot->sectors_per_clusters <= 0x80)
 		return boot->sectors_per_clusters;
 	if (boot->sectors_per_clusters >= 0xf4) /* limit shift to 2MB max */
-		return 1U << -(s8)boot->sectors_per_clusters;
+		return 1U << (-(s8)boot->sectors_per_clusters);
 	return -EINVAL;
 }
 
@@ -717,6 +721,7 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
 	struct buffer_head *bh;
 	struct MFT_REC *rec;
 	u16 fn, ao;
+	u8 cluster_bits;
 
 	sbi->volume.blocks = dev_size >> PAGE_SHIFT;
 
@@ -784,7 +789,7 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
 	if (boot_sector_size != sector_size) {
 		ntfs_warn(
 			sb,
-			"Different NTFS sector size (%u) and media sector size (%u)",
+			"Different NTFS sector size (%u) and media sector size (%u).",
 			boot_sector_size, sector_size);
 		dev_size += sector_size - 1;
 	}
@@ -792,8 +797,8 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
 	sbi->cluster_size = boot_sector_size * sct_per_clst;
 	sbi->cluster_bits = blksize_bits(sbi->cluster_size);
 
-	sbi->mft.lbo = mlcn << sbi->cluster_bits;
-	sbi->mft.lbo2 = mlcn2 << sbi->cluster_bits;
+	sbi->mft.lbo = mlcn << cluster_bits;
+	sbi->mft.lbo2 = mlcn2 << cluster_bits;
 
 	/* Compare boot's cluster and sector. */
 	if (sbi->cluster_size < boot_sector_size)
@@ -804,7 +809,7 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
 		/* No way to use ntfs_get_block in this case. */
 		ntfs_err(
 			sb,
-			"Failed to mount 'cause NTFS's cluster size (%u) is less than media sector size (%u)",
+			"Failed to mount 'cause NTFS's cluster size (%u) is less than media sector size (%u).",
 			sbi->cluster_size, sector_size);
 		goto out;
 	}
@@ -840,18 +845,18 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
 		gb0 = format_size_gb(dev_size, &mb0);
 		ntfs_warn(
 			sb,
-			"RAW NTFS volume: Filesystem size %u.%02u Gb > volume size %u.%02u Gb. Mount in read-only",
+			"RAW NTFS volume: Filesystem size %u.%02u Gb > volume size %u.%02u Gb. Mount in read-only.",
 			gb, mb, gb0, mb0);
 		sb->s_flags |= SB_RDONLY;
 	}
 
-	clusters = sbi->volume.size >> sbi->cluster_bits;
+	clusters = sbi->volume.size >> cluster_bits;
 #ifndef CONFIG_NTFS3_64BIT_CLUSTER
 	/* 32 bits per cluster. */
 	if (clusters >> 32) {
 		ntfs_notice(
 			sb,
-			"NTFS %u.%02u Gb is too big to use 32 bits per cluster",
+			"NTFS %u.%02u Gb is too big to use 32 bits per cluster.",
 			gb, mb);
 		goto out;
 	}
@@ -885,17 +890,17 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
 	sbi->volume.blocks = sbi->volume.size >> sb->s_blocksize_bits;
 
 	/* Maximum size for normal files. */
-	sbi->maxbytes = (clusters << sbi->cluster_bits) - 1;
+	sbi->maxbytes = (clusters << cluster_bits) - 1;
 
 #ifdef CONFIG_NTFS3_64BIT_CLUSTER
-	if (clusters >= (1ull << (64 - sbi->cluster_bits)))
+	if (clusters >= (1ull << (64 - cluster_bits)))
 		sbi->maxbytes = -1;
 	sbi->maxbytes_sparse = -1;
 	sb->s_maxbytes = MAX_LFS_FILESIZE;
 #else
 	/* Maximum size for sparse file. */
-	sbi->maxbytes_sparse = (1ull << (sbi->cluster_bits + 32)) - 1;
-	sb->s_maxbytes = 0xFFFFFFFFull << sbi->cluster_bits;
+	sbi->maxbytes_sparse = (1ull << (cluster_bits + 32)) - 1;
+	sb->s_maxbytes = 0xFFFFFFFFull << cluster_bits;
 #endif
 
 	/*
@@ -903,7 +908,7 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
 	 * It would be nice if we are able to allocate 1/8 of
 	 * total clusters for MFT but not more then 512 MB.
 	 */
-	sbi->zone_max = min_t(CLST, 0x20000000 >> sbi->cluster_bits, clusters >> 3);
+	sbi->zone_max = min_t(CLST, 0x20000000 >> cluster_bits, clusters >> 3);
 
 	err = 0;
 
@@ -1433,7 +1438,7 @@ static const struct fs_context_operations ntfs_context_ops = {
 };
 
 /*
- * ntfs_init_fs_context - Initialize spi and opts
+ * ntfs_init_fs_context - Initialize sbi and opts
  *
  * This will called when mount/remount. We will first initialize
  * options so that if remount we can use just that.
@@ -1506,7 +1511,8 @@ static int __init init_ntfs_fs(void)
 	if (IS_ENABLED(CONFIG_NTFS3_FS_POSIX_ACL))
 		pr_info("ntfs3: Enabled Linux POSIX ACLs support\n");
 	if (IS_ENABLED(CONFIG_NTFS3_64BIT_CLUSTER))
-		pr_notice("ntfs3: Warning: Activated 64 bits per cluster. Windows does not support this\n");
+		pr_notice(
+			"ntfs3: Warning: Activated 64 bits per cluster. Windows does not support this\n");
 	if (IS_ENABLED(CONFIG_NTFS3_LZX_XPRESS))
 		pr_info("ntfs3: Read-only LZX/Xpress compression included\n");
 
@@ -1549,7 +1555,9 @@ MODULE_DESCRIPTION("ntfs3 read/write filesystem");
 MODULE_INFO(behaviour, "Enabled Linux POSIX ACLs support");
 #endif
 #ifdef CONFIG_NTFS3_64BIT_CLUSTER
-MODULE_INFO(cluster, "Warning: Activated 64 bits per cluster. Windows does not support this");
+MODULE_INFO(
+	cluster,
+	"Warning: Activated 64 bits per cluster. Windows does not support this");
 #endif
 #ifdef CONFIG_NTFS3_LZX_XPRESS
 MODULE_INFO(compression, "Read-only lzx/xpress compression included");

fs/ntfs3/xattr.c

@@ -23,8 +23,8 @@
 
 static inline size_t unpacked_ea_size(const struct EA_FULL *ea)
 {
-	return ea->size ? le32_to_cpu(ea->size)
-			: ALIGN(struct_size(ea, name,
+	return ea->size ? le32_to_cpu(ea->size) :
+				ALIGN(struct_size(ea, name,
 					    1 + ea->name_len +
 						    le16_to_cpu(ea->elength)),
 				4);