fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / fs / fat / cache.c

diff --git a/fs/fat/cache.c b/fs/fat/cache.c
index 7c52e46..05c2941 100644 (file)
--- a/fs/fat/cache.c
+++ b/fs/fat/cache.c
@@ -34,9 +34,9 @@ static inline int fat_max_cache(struct inode *inode)
        return FAT_MAX_CACHE;
 }
 
-static kmem_cache_t *fat_cache_cachep;
+static struct kmem_cache *fat_cache_cachep;
 
-static void init_once(void *foo, kmem_cache_t *cachep, unsigned long flags)
+static void init_once(void *foo, struct kmem_cache *cachep, unsigned long flags)
 {
        struct fat_cache *cache = (struct fat_cache *)foo;
 
@@ -49,22 +49,21 @@ 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");
+       kmem_cache_destroy(fat_cache_cachep);
 }
 
 static inline struct fat_cache *fat_cache_alloc(struct inode *inode)
 {
-       return kmem_cache_alloc(fat_cache_cachep, SLAB_KERNEL);
+       return kmem_cache_alloc(fat_cache_cachep, GFP_KERNEL);
 }
 
 static inline void fat_cache_free(struct fat_cache *cache)
@@ -295,7 +294,8 @@ 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 +303,12 @@ 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 +321,11 @@ 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;
 }