[PATCH] fat_access cleanup (6/11)

This reads ->free_clusters without lock_fat() in fat_statfs().

[PATCH] fat_access cleanup (6/11)
This reads ->free_clusters without lock_fat() in fat_statfs().
24fbf4c4 · Hirofumi Ogawa · Linus Torvalds · b2ef7d8a · 24fbf4c4
Commit 24fbf4c4 authored Jul 25, 2003 by Hirofumi Ogawa Committed by Linus Torvalds Jul 25, 2003
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Showing with 12 additions and 8 deletions

fs/fat/inode.c fs/fat/inode.c +12 -8

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--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1024,8 +1024,11 @@ int fat_fill_super(struct super_block *sb, void *data, int silent,

 int fat_statfs(struct super_block *sb, struct kstatfs *buf)
 {
-	int free,nr;
+	int free, nr;
       
+	if (MSDOS_SB(sb)->free_clusters != -1)
+		free = MSDOS_SB(sb)->free_clusters;
+	else {
 		lock_fat(sb);
 		if (MSDOS_SB(sb)->free_clusters != -1)
 			free = MSDOS_SB(sb)->free_clusters;
@@ -1037,6 +1040,7 @@ int fat_statfs(struct super_block *sb, struct kstatfs *buf)
 			MSDOS_SB(sb)->free_clusters = free;
 		}
 		unlock_fat(sb);
+	}

 	buf->f_type = sb->s_magic;
 	buf->f_bsize = 1 << MSDOS_SB(sb)->cluster_bits;