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-rw-r--r--fs/exfat/inode.c671
1 files changed, 671 insertions, 0 deletions
diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c
new file mode 100644
index 000000000000..06887492f54b
--- /dev/null
+++ b/fs/exfat/inode.c
@@ -0,0 +1,671 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ */
+
+#include <linux/init.h>
+#include <linux/buffer_head.h>
+#include <linux/mpage.h>
+#include <linux/bio.h>
+#include <linux/blkdev.h>
+#include <linux/time.h>
+#include <linux/writeback.h>
+#include <linux/uio.h>
+#include <linux/random.h>
+#include <linux/iversion.h>
+
+#include "exfat_raw.h"
+#include "exfat_fs.h"
+
+static int __exfat_write_inode(struct inode *inode, int sync)
+{
+ int ret = -EIO;
+ unsigned long long on_disk_size;
+ struct exfat_dentry *ep, *ep2;
+ struct exfat_entry_set_cache *es = NULL;
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct exfat_inode_info *ei = EXFAT_I(inode);
+ bool is_dir = (ei->type == TYPE_DIR) ? true : false;
+
+ if (inode->i_ino == EXFAT_ROOT_INO)
+ return 0;
+
+ /*
+ * If the indode is already unlinked, there is no need for updating it.
+ */
+ if (ei->dir.dir == DIR_DELETED)
+ return 0;
+
+ if (is_dir && ei->dir.dir == sbi->root_dir && ei->entry == -1)
+ return 0;
+
+ exfat_set_vol_flags(sb, VOL_DIRTY);
+
+ /* get the directory entry of given file or directory */
+ es = exfat_get_dentry_set(sb, &(ei->dir), ei->entry, ES_ALL_ENTRIES,
+ &ep);
+ if (!es)
+ return -EIO;
+ ep2 = ep + 1;
+
+ ep->dentry.file.attr = cpu_to_le16(exfat_make_attr(inode));
+
+ /* set FILE_INFO structure using the acquired struct exfat_dentry */
+ exfat_set_entry_time(sbi, &ei->i_crtime,
+ &ep->dentry.file.create_tz,
+ &ep->dentry.file.create_time,
+ &ep->dentry.file.create_date,
+ &ep->dentry.file.create_time_ms);
+ exfat_set_entry_time(sbi, &inode->i_mtime,
+ &ep->dentry.file.modify_tz,
+ &ep->dentry.file.modify_time,
+ &ep->dentry.file.modify_date,
+ &ep->dentry.file.modify_time_ms);
+ exfat_set_entry_time(sbi, &inode->i_atime,
+ &ep->dentry.file.access_tz,
+ &ep->dentry.file.access_time,
+ &ep->dentry.file.access_date,
+ NULL);
+
+ /* File size should be zero if there is no cluster allocated */
+ on_disk_size = i_size_read(inode);
+
+ if (ei->start_clu == EXFAT_EOF_CLUSTER)
+ on_disk_size = 0;
+
+ ep2->dentry.stream.valid_size = cpu_to_le64(on_disk_size);
+ ep2->dentry.stream.size = ep2->dentry.stream.valid_size;
+
+ ret = exfat_update_dir_chksum_with_entry_set(sb, es, sync);
+ kfree(es);
+ return ret;
+}
+
+int exfat_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ int ret;
+
+ mutex_lock(&EXFAT_SB(inode->i_sb)->s_lock);
+ ret = __exfat_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+ mutex_unlock(&EXFAT_SB(inode->i_sb)->s_lock);
+
+ return ret;
+}
+
+void exfat_sync_inode(struct inode *inode)
+{
+ lockdep_assert_held(&EXFAT_SB(inode->i_sb)->s_lock);
+ __exfat_write_inode(inode, 1);
+}
+
+/*
+ * Input: inode, (logical) clu_offset, target allocation area
+ * Output: errcode, cluster number
+ * *clu = (~0), if it's unable to allocate a new cluster
+ */
+static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
+ unsigned int *clu, int create)
+{
+ int ret, modified = false;
+ unsigned int last_clu;
+ struct exfat_chain new_clu;
+ struct exfat_dentry *ep;
+ struct exfat_entry_set_cache *es = NULL;
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct exfat_inode_info *ei = EXFAT_I(inode);
+ unsigned int local_clu_offset = clu_offset;
+ unsigned int num_to_be_allocated = 0, num_clusters = 0;
+
+ ei->rwoffset = EXFAT_CLU_TO_B(clu_offset, sbi);
+
+ if (EXFAT_I(inode)->i_size_ondisk > 0)
+ num_clusters =
+ EXFAT_B_TO_CLU_ROUND_UP(EXFAT_I(inode)->i_size_ondisk,
+ sbi);
+
+ if (clu_offset >= num_clusters)
+ num_to_be_allocated = clu_offset - num_clusters + 1;
+
+ if (!create && (num_to_be_allocated > 0)) {
+ *clu = EXFAT_EOF_CLUSTER;
+ return 0;
+ }
+
+ *clu = last_clu = ei->start_clu;
+
+ if (ei->flags == ALLOC_NO_FAT_CHAIN) {
+ if (clu_offset > 0 && *clu != EXFAT_EOF_CLUSTER) {
+ last_clu += clu_offset - 1;
+
+ if (clu_offset == num_clusters)
+ *clu = EXFAT_EOF_CLUSTER;
+ else
+ *clu += clu_offset;
+ }
+ } else if (ei->type == TYPE_FILE) {
+ unsigned int fclus = 0;
+ int err = exfat_get_cluster(inode, clu_offset,
+ &fclus, clu, &last_clu, 1);
+ if (err)
+ return -EIO;
+
+ clu_offset -= fclus;
+ } else {
+ /* hint information */
+ if (clu_offset > 0 && ei->hint_bmap.off != EXFAT_EOF_CLUSTER &&
+ ei->hint_bmap.off > 0 && clu_offset >= ei->hint_bmap.off) {
+ clu_offset -= ei->hint_bmap.off;
+ /* hint_bmap.clu should be valid */
+ WARN_ON(ei->hint_bmap.clu < 2);
+ *clu = ei->hint_bmap.clu;
+ }
+
+ while (clu_offset > 0 && *clu != EXFAT_EOF_CLUSTER) {
+ last_clu = *clu;
+ if (exfat_get_next_cluster(sb, clu))
+ return -EIO;
+ clu_offset--;
+ }
+ }
+
+ if (*clu == EXFAT_EOF_CLUSTER) {
+ exfat_set_vol_flags(sb, VOL_DIRTY);
+
+ new_clu.dir = (last_clu == EXFAT_EOF_CLUSTER) ?
+ EXFAT_EOF_CLUSTER : last_clu + 1;
+ new_clu.size = 0;
+ new_clu.flags = ei->flags;
+
+ /* allocate a cluster */
+ if (num_to_be_allocated < 1) {
+ /* Broken FAT (i_sze > allocated FAT) */
+ exfat_fs_error(sb, "broken FAT chain.");
+ return -EIO;
+ }
+
+ ret = exfat_alloc_cluster(inode, num_to_be_allocated, &new_clu);
+ if (ret)
+ return ret;
+
+ if (new_clu.dir == EXFAT_EOF_CLUSTER ||
+ new_clu.dir == EXFAT_FREE_CLUSTER) {
+ exfat_fs_error(sb,
+ "bogus cluster new allocated (last_clu : %u, new_clu : %u)",
+ last_clu, new_clu.dir);
+ return -EIO;
+ }
+
+ /* append to the FAT chain */
+ if (last_clu == EXFAT_EOF_CLUSTER) {
+ if (new_clu.flags == ALLOC_FAT_CHAIN)
+ ei->flags = ALLOC_FAT_CHAIN;
+ ei->start_clu = new_clu.dir;
+ modified = true;
+ } else {
+ if (new_clu.flags != ei->flags) {
+ /* no-fat-chain bit is disabled,
+ * so fat-chain should be synced with
+ * alloc-bitmap
+ */
+ exfat_chain_cont_cluster(sb, ei->start_clu,
+ num_clusters);
+ ei->flags = ALLOC_FAT_CHAIN;
+ modified = true;
+ }
+ if (new_clu.flags == ALLOC_FAT_CHAIN)
+ if (exfat_ent_set(sb, last_clu, new_clu.dir))
+ return -EIO;
+ }
+
+ num_clusters += num_to_be_allocated;
+ *clu = new_clu.dir;
+
+ if (ei->dir.dir != DIR_DELETED) {
+ es = exfat_get_dentry_set(sb, &(ei->dir), ei->entry,
+ ES_ALL_ENTRIES, &ep);
+ if (!es)
+ return -EIO;
+ /* get stream entry */
+ ep++;
+
+ /* update directory entry */
+ if (modified) {
+ if (ep->dentry.stream.flags != ei->flags)
+ ep->dentry.stream.flags = ei->flags;
+
+ if (le32_to_cpu(ep->dentry.stream.start_clu) !=
+ ei->start_clu)
+ ep->dentry.stream.start_clu =
+ cpu_to_le32(ei->start_clu);
+
+ ep->dentry.stream.valid_size =
+ cpu_to_le64(i_size_read(inode));
+ ep->dentry.stream.size =
+ ep->dentry.stream.valid_size;
+ }
+
+ if (exfat_update_dir_chksum_with_entry_set(sb, es,
+ inode_needs_sync(inode)))
+ return -EIO;
+ kfree(es);
+
+ } /* end of if != DIR_DELETED */
+
+ inode->i_blocks +=
+ num_to_be_allocated << sbi->sect_per_clus_bits;
+
+ /*
+ * Move *clu pointer along FAT chains (hole care) because the
+ * caller of this function expect *clu to be the last cluster.
+ * This only works when num_to_be_allocated >= 2,
+ * *clu = (the first cluster of the allocated chain) =>
+ * (the last cluster of ...)
+ */
+ if (ei->flags == ALLOC_NO_FAT_CHAIN) {
+ *clu += num_to_be_allocated - 1;
+ } else {
+ while (num_to_be_allocated > 1) {
+ if (exfat_get_next_cluster(sb, clu))
+ return -EIO;
+ num_to_be_allocated--;
+ }
+ }
+
+ }
+
+ /* hint information */
+ ei->hint_bmap.off = local_clu_offset;
+ ei->hint_bmap.clu = *clu;
+
+ return 0;
+}
+
+static int exfat_map_new_buffer(struct exfat_inode_info *ei,
+ struct buffer_head *bh, loff_t pos)
+{
+ if (buffer_delay(bh) && pos > ei->i_size_aligned)
+ return -EIO;
+ set_buffer_new(bh);
+
+ /*
+ * Adjust i_size_aligned if i_size_ondisk is bigger than it.
+ */
+ if (ei->i_size_ondisk > ei->i_size_aligned)
+ ei->i_size_aligned = ei->i_size_ondisk;
+ return 0;
+}
+
+static int exfat_get_block(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create)
+{
+ struct exfat_inode_info *ei = EXFAT_I(inode);
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits;
+ int err = 0;
+ unsigned long mapped_blocks = 0;
+ unsigned int cluster, sec_offset;
+ sector_t last_block;
+ sector_t phys = 0;
+ loff_t pos;
+
+ mutex_lock(&sbi->s_lock);
+ last_block = EXFAT_B_TO_BLK_ROUND_UP(i_size_read(inode), sb);
+ if (iblock >= last_block && !create)
+ goto done;
+
+ /* Is this block already allocated? */
+ err = exfat_map_cluster(inode, iblock >> sbi->sect_per_clus_bits,
+ &cluster, create);
+ if (err) {
+ if (err != -ENOSPC)
+ exfat_fs_error_ratelimit(sb,
+ "failed to bmap (inode : %p iblock : %llu, err : %d)",
+ inode, (unsigned long long)iblock, err);
+ goto unlock_ret;
+ }
+
+ if (cluster == EXFAT_EOF_CLUSTER)
+ goto done;
+
+ /* sector offset in cluster */
+ sec_offset = iblock & (sbi->sect_per_clus - 1);
+
+ phys = exfat_cluster_to_sector(sbi, cluster) + sec_offset;
+ mapped_blocks = sbi->sect_per_clus - sec_offset;
+ max_blocks = min(mapped_blocks, max_blocks);
+
+ /* Treat newly added block / cluster */
+ if (iblock < last_block)
+ create = 0;
+
+ if (create || buffer_delay(bh_result)) {
+ pos = EXFAT_BLK_TO_B((iblock + 1), sb);
+ if (ei->i_size_ondisk < pos)
+ ei->i_size_ondisk = pos;
+ }
+
+ if (create) {
+ err = exfat_map_new_buffer(ei, bh_result, pos);
+ if (err) {
+ exfat_fs_error(sb,
+ "requested for bmap out of range(pos : (%llu) > i_size_aligned(%llu)\n",
+ pos, ei->i_size_aligned);
+ goto unlock_ret;
+ }
+ }
+
+ if (buffer_delay(bh_result))
+ clear_buffer_delay(bh_result);
+ map_bh(bh_result, sb, phys);
+done:
+ bh_result->b_size = EXFAT_BLK_TO_B(max_blocks, sb);
+unlock_ret:
+ mutex_unlock(&sbi->s_lock);
+ return err;
+}
+
+static int exfat_readpage(struct file *file, struct page *page)
+{
+ return mpage_readpage(page, exfat_get_block);
+}
+
+static int exfat_readpages(struct file *file, struct address_space *mapping,
+ struct list_head *pages, unsigned int nr_pages)
+{
+ return mpage_readpages(mapping, pages, nr_pages, exfat_get_block);
+}
+
+static int exfat_writepage(struct page *page, struct writeback_control *wbc)
+{
+ return block_write_full_page(page, exfat_get_block, wbc);
+}
+
+static int exfat_writepages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ return mpage_writepages(mapping, wbc, exfat_get_block);
+}
+
+static void exfat_write_failed(struct address_space *mapping, loff_t to)
+{
+ struct inode *inode = mapping->host;
+
+ if (to > i_size_read(inode)) {
+ truncate_pagecache(inode, i_size_read(inode));
+ exfat_truncate(inode, EXFAT_I(inode)->i_size_aligned);
+ }
+}
+
+static int exfat_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned int len, unsigned int flags,
+ struct page **pagep, void **fsdata)
+{
+ int ret;
+
+ *pagep = NULL;
+ ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+ exfat_get_block,
+ &EXFAT_I(mapping->host)->i_size_ondisk);
+
+ if (ret < 0)
+ exfat_write_failed(mapping, pos+len);
+
+ return ret;
+}
+
+static int exfat_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned int len, unsigned int copied,
+ struct page *pagep, void *fsdata)
+{
+ struct inode *inode = mapping->host;
+ struct exfat_inode_info *ei = EXFAT_I(inode);
+ int err;
+
+ err = generic_write_end(file, mapping, pos, len, copied, pagep, fsdata);
+
+ if (EXFAT_I(inode)->i_size_aligned < i_size_read(inode)) {
+ exfat_fs_error(inode->i_sb,
+ "invalid size(size(%llu) > aligned(%llu)\n",
+ i_size_read(inode), EXFAT_I(inode)->i_size_aligned);
+ return -EIO;
+ }
+
+ if (err < len)
+ exfat_write_failed(mapping, pos+len);
+
+ if (!(err < 0) && !(ei->attr & ATTR_ARCHIVE)) {
+ inode->i_mtime = inode->i_ctime = current_time(inode);
+ ei->attr |= ATTR_ARCHIVE;
+ mark_inode_dirty(inode);
+ }
+
+ return err;
+}
+
+static ssize_t exfat_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
+{
+ struct address_space *mapping = iocb->ki_filp->f_mapping;
+ struct inode *inode = mapping->host;
+ loff_t size = iocb->ki_pos + iov_iter_count(iter);
+ int rw = iov_iter_rw(iter);
+ ssize_t ret;
+
+ if (rw == WRITE) {
+ /*
+ * FIXME: blockdev_direct_IO() doesn't use ->write_begin(),
+ * so we need to update the ->i_size_aligned to block boundary.
+ *
+ * But we must fill the remaining area or hole by nul for
+ * updating ->i_size_aligned
+ *
+ * Return 0, and fallback to normal buffered write.
+ */
+ if (EXFAT_I(inode)->i_size_aligned < size)
+ return 0;
+ }
+
+ /*
+ * Need to use the DIO_LOCKING for avoiding the race
+ * condition of exfat_get_block() and ->truncate().
+ */
+ ret = blockdev_direct_IO(iocb, inode, iter, exfat_get_block);
+ if (ret < 0 && (rw & WRITE))
+ exfat_write_failed(mapping, size);
+ return ret;
+}
+
+static sector_t exfat_aop_bmap(struct address_space *mapping, sector_t block)
+{
+ sector_t blocknr;
+
+ /* exfat_get_cluster() assumes the requested blocknr isn't truncated. */
+ down_read(&EXFAT_I(mapping->host)->truncate_lock);
+ blocknr = generic_block_bmap(mapping, block, exfat_get_block);
+ up_read(&EXFAT_I(mapping->host)->truncate_lock);
+ return blocknr;
+}
+
+/*
+ * exfat_block_truncate_page() zeroes out a mapping from file offset `from'
+ * up to the end of the block which corresponds to `from'.
+ * This is required during truncate to physically zeroout the tail end
+ * of that block so it doesn't yield old data if the file is later grown.
+ * Also, avoid causing failure from fsx for cases of "data past EOF"
+ */
+int exfat_block_truncate_page(struct inode *inode, loff_t from)
+{
+ return block_truncate_page(inode->i_mapping, from, exfat_get_block);
+}
+
+static const struct address_space_operations exfat_aops = {
+ .readpage = exfat_readpage,
+ .readpages = exfat_readpages,
+ .writepage = exfat_writepage,
+ .writepages = exfat_writepages,
+ .write_begin = exfat_write_begin,
+ .write_end = exfat_write_end,
+ .direct_IO = exfat_direct_IO,
+ .bmap = exfat_aop_bmap
+};
+
+static inline unsigned long exfat_hash(loff_t i_pos)
+{
+ return hash_32(i_pos, EXFAT_HASH_BITS);
+}
+
+void exfat_hash_inode(struct inode *inode, loff_t i_pos)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
+ struct hlist_head *head = sbi->inode_hashtable + exfat_hash(i_pos);
+
+ spin_lock(&sbi->inode_hash_lock);
+ EXFAT_I(inode)->i_pos = i_pos;
+ hlist_add_head(&EXFAT_I(inode)->i_hash_fat, head);
+ spin_unlock(&sbi->inode_hash_lock);
+}
+
+void exfat_unhash_inode(struct inode *inode)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
+
+ spin_lock(&sbi->inode_hash_lock);
+ hlist_del_init(&EXFAT_I(inode)->i_hash_fat);
+ EXFAT_I(inode)->i_pos = 0;
+ spin_unlock(&sbi->inode_hash_lock);
+}
+
+struct inode *exfat_iget(struct super_block *sb, loff_t i_pos)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct exfat_inode_info *info;
+ struct hlist_head *head = sbi->inode_hashtable + exfat_hash(i_pos);
+ struct inode *inode = NULL;
+
+ spin_lock(&sbi->inode_hash_lock);
+ hlist_for_each_entry(info, head, i_hash_fat) {
+ WARN_ON(info->vfs_inode.i_sb != sb);
+
+ if (i_pos != info->i_pos)
+ continue;
+ inode = igrab(&info->vfs_inode);
+ if (inode)
+ break;
+ }
+ spin_unlock(&sbi->inode_hash_lock);
+ return inode;
+}
+
+/* doesn't deal with root inode */
+static int exfat_fill_inode(struct inode *inode, struct exfat_dir_entry *info)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
+ struct exfat_inode_info *ei = EXFAT_I(inode);
+ loff_t size = info->size;
+
+ memcpy(&ei->dir, &info->dir, sizeof(struct exfat_chain));
+ ei->entry = info->entry;
+ ei->attr = info->attr;
+ ei->start_clu = info->start_clu;
+ ei->flags = info->flags;
+ ei->type = info->type;
+
+ ei->version = 0;
+ ei->hint_stat.eidx = 0;
+ ei->hint_stat.clu = info->start_clu;
+ ei->hint_femp.eidx = EXFAT_HINT_NONE;
+ ei->rwoffset = 0;
+ ei->hint_bmap.off = EXFAT_EOF_CLUSTER;
+ ei->i_pos = 0;
+
+ inode->i_uid = sbi->options.fs_uid;
+ inode->i_gid = sbi->options.fs_gid;
+ inode_inc_iversion(inode);
+ inode->i_generation = prandom_u32();
+
+ if (info->attr & ATTR_SUBDIR) { /* directory */
+ inode->i_generation &= ~1;
+ inode->i_mode = exfat_make_mode(sbi, info->attr, 0777);
+ inode->i_op = &exfat_dir_inode_operations;
+ inode->i_fop = &exfat_dir_operations;
+ set_nlink(inode, info->num_subdirs);
+ } else { /* regular file */
+ inode->i_generation |= 1;
+ inode->i_mode = exfat_make_mode(sbi, info->attr, 0777);
+ inode->i_op = &exfat_file_inode_operations;
+ inode->i_fop = &exfat_file_operations;
+ inode->i_mapping->a_ops = &exfat_aops;
+ inode->i_mapping->nrpages = 0;
+ }
+
+ i_size_write(inode, size);
+
+ /* ondisk and aligned size should be aligned with block size */
+ if (size & (inode->i_sb->s_blocksize - 1)) {
+ size |= (inode->i_sb->s_blocksize - 1);
+ size++;
+ }
+
+ ei->i_size_aligned = size;
+ ei->i_size_ondisk = size;
+
+ exfat_save_attr(inode, info->attr);
+
+ inode->i_blocks = ((i_size_read(inode) + (sbi->cluster_size - 1)) &
+ ~(sbi->cluster_size - 1)) >> inode->i_blkbits;
+ inode->i_mtime = info->mtime;
+ inode->i_ctime = info->mtime;
+ ei->i_crtime = info->crtime;
+ inode->i_atime = info->atime;
+
+ exfat_cache_init_inode(inode);
+
+ return 0;
+}
+
+struct inode *exfat_build_inode(struct super_block *sb,
+ struct exfat_dir_entry *info, loff_t i_pos)
+{
+ struct inode *inode;
+ int err;
+
+ inode = exfat_iget(sb, i_pos);
+ if (inode)
+ goto out;
+ inode = new_inode(sb);
+ if (!inode) {
+ inode = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+ inode->i_ino = iunique(sb, EXFAT_ROOT_INO);
+ inode_set_iversion(inode, 1);
+ err = exfat_fill_inode(inode, info);
+ if (err) {
+ iput(inode);
+ inode = ERR_PTR(err);
+ goto out;
+ }
+ exfat_hash_inode(inode, i_pos);
+ insert_inode_hash(inode);
+out:
+ return inode;
+}
+
+void exfat_evict_inode(struct inode *inode)
+{
+ truncate_inode_pages(&inode->i_data, 0);
+
+ if (!inode->i_nlink) {
+ i_size_write(inode, 0);
+ mutex_lock(&EXFAT_SB(inode->i_sb)->s_lock);
+ __exfat_truncate(inode, 0);
+ mutex_unlock(&EXFAT_SB(inode->i_sb)->s_lock);
+ }
+
+ invalidate_inode_buffers(inode);
+ clear_inode(inode);
+ exfat_cache_inval_inode(inode);
+ exfat_unhash_inode(inode);
+}