X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Ffat%2Fcache.c;h=97b967b84fc6070b7efc47887345a8e574f5d147;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=7c52e465a61903e21f319ffa661236055aa6d1de;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/fs/fat/cache.c b/fs/fat/cache.c
index 7c52e465a..97b967b84 100644
--- a/fs/fat/cache.c
+++ b/fs/fat/cache.c
@@ -49,14 +49,14 @@ int __init fat_cache_init(void)
 {
 	fat_cache_cachep = kmem_cache_create("fat_cache",
 				sizeof(struct fat_cache),
-				0, SLAB_RECLAIM_ACCOUNT,
+				0, SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD,
 				init_once, NULL);
 	if (fat_cache_cachep == NULL)
 		return -ENOMEM;
 	return 0;
 }
 
-void __exit fat_cache_destroy(void)
+void fat_cache_destroy(void)
 {
 	if (kmem_cache_destroy(fat_cache_cachep))
 		printk(KERN_INFO "fat_cache: not all structures were freed\n");
@@ -295,7 +295,8 @@ static int fat_bmap_cluster(struct inode *inode, int cluster)
 	return dclus;
 }
 
-int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys)
+int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
+	     unsigned long *mapped_blocks)
 {
 	struct super_block *sb = inode->i_sb;
 	struct msdos_sb_info *sbi = MSDOS_SB(sb);
@@ -303,9 +304,12 @@ int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys)
 	int cluster, offset;
 
 	*phys = 0;
+	*mapped_blocks = 0;
 	if ((sbi->fat_bits != 32) && (inode->i_ino == MSDOS_ROOT_INO)) {
-		if (sector < (sbi->dir_entries >> sbi->dir_per_block_bits))
+		if (sector < (sbi->dir_entries >> sbi->dir_per_block_bits)) {
 			*phys = sector + sbi->dir_start;
+			*mapped_blocks = 1;
+		}
 		return 0;
 	}
 	last_block = (MSDOS_I(inode)->mmu_private + (sb->s_blocksize - 1))
@@ -318,7 +322,11 @@ int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys)
 	cluster = fat_bmap_cluster(inode, cluster);
 	if (cluster < 0)
 		return cluster;
-	else if (cluster)
+	else if (cluster) {
 		*phys = fat_clus_to_blknr(sbi, cluster) + offset;
+		*mapped_blocks = sbi->sec_per_clus - offset;
+		if (*mapped_blocks > last_block - sector)
+			*mapped_blocks = last_block - sector;
+	}
 	return 0;
 }