Merge tag 'exfat-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat

Pull exfat update from Namjae Jeon:

 - simplify and remove some redundant directory entry code

 - optimize the size of exfat_entry_set_cache and its allocation policy

 - improve the performance for creating files and directories

* tag 'exfat-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
  exfat: reuse exfat_find_location() to simplify exfat_get_dentry_set()
  exfat: fix overflow in sector and cluster conversion
  exfat: remove i_size_write() from __exfat_truncate()
  exfat: remove argument 'size' from exfat_truncate()
  exfat: remove unnecessary arguments from exfat_find_dir_entry()
  exfat: remove unneeded codes from __exfat_rename()
  exfat: remove call ilog2() from exfat_readdir()
  exfat: replace magic numbers with Macros
  exfat: rename exfat_free_dentry_set() to exfat_put_dentry_set()
  exfat: move exfat_entry_set_cache from heap to stack
  exfat: support dynamic allocate bh for exfat_entry_set_cache
  exfat: reduce the size of exfat_entry_set_cache
  exfat: hint the empty entry which at the end of cluster chain
  exfat: simplify empty entry hint

1 files changed, 8 insertions, 9 deletions

diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c
index eac95bcd9a8a..5b644cb057fa 100644
--- a/fs/exfat/inode.c
+++ b/fs/exfat/inode.c
@@ -21,7 +21,7 @@ int __exfat_write_inode(struct inode *inode, int sync)
 {
 	unsigned long long on_disk_size;
 	struct exfat_dentry *ep, *ep2;
-	struct exfat_entry_set_cache *es = NULL;
+	struct exfat_entry_set_cache es;
 	struct super_block *sb = inode->i_sb;
 	struct exfat_sb_info *sbi = EXFAT_SB(sb);
 	struct exfat_inode_info *ei = EXFAT_I(inode);
@@ -42,11 +42,10 @@ int __exfat_write_inode(struct inode *inode, int sync)
 	exfat_set_volume_dirty(sb);
 
 	/* get the directory entry of given file or directory */
-	es = exfat_get_dentry_set(sb, &(ei->dir), ei->entry, ES_ALL_ENTRIES);
-	if (!es)
+	if (exfat_get_dentry_set(&es, sb, &(ei->dir), ei->entry, ES_ALL_ENTRIES))
 		return -EIO;
-	ep = exfat_get_dentry_cached(es, 0);
-	ep2 = exfat_get_dentry_cached(es, 1);
+	ep = exfat_get_dentry_cached(&es, ES_IDX_FILE);
+	ep2 = exfat_get_dentry_cached(&es, ES_IDX_STREAM);
 
 	ep->dentry.file.attr = cpu_to_le16(exfat_make_attr(inode));
 
@@ -83,8 +82,8 @@ int __exfat_write_inode(struct inode *inode, int sync)
 		ep2->dentry.stream.start_clu = EXFAT_FREE_CLUSTER;
 	}
 
-	exfat_update_dir_chksum_with_entry_set(es);
-	return exfat_free_dentry_set(es, sync);
+	exfat_update_dir_chksum_with_entry_set(&es);
+	return exfat_put_dentry_set(&es, sync);
 }
 
 int exfat_write_inode(struct inode *inode, struct writeback_control *wbc)
@@ -358,7 +357,7 @@ static void exfat_write_failed(struct address_space *mapping, loff_t to)
 	if (to > i_size_read(inode)) {
 		truncate_pagecache(inode, i_size_read(inode));
 		inode->i_mtime = inode->i_ctime = current_time(inode);
-		exfat_truncate(inode, EXFAT_I(inode)->i_size_aligned);
+		exfat_truncate(inode);
 	}
 }
 
@@ -622,7 +621,7 @@ void exfat_evict_inode(struct inode *inode)
 	if (!inode->i_nlink) {
 		i_size_write(inode, 0);
 		mutex_lock(&EXFAT_SB(inode->i_sb)->s_lock);
-		__exfat_truncate(inode, 0);
+		__exfat_truncate(inode);
 		mutex_unlock(&EXFAT_SB(inode->i_sb)->s_lock);
 	}