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-rw-r--r--include/linux/ext3_fs.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index 6ce1bca0172..65990ef612f 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -724,21 +724,30 @@ struct ext3_dir_entry_2 {
~EXT3_DIR_ROUND)
#define EXT3_MAX_REC_LEN ((1<<16)-1)
+/*
+ * Tests against MAX_REC_LEN etc were put in place for 64k block
+ * sizes; if that is not possible on this arch, we can skip
+ * those tests and speed things up.
+ */
static inline unsigned ext3_rec_len_from_disk(__le16 dlen)
{
unsigned len = le16_to_cpu(dlen);
+#if (PAGE_CACHE_SIZE >= 65536)
if (len == EXT3_MAX_REC_LEN)
return 1 << 16;
+#endif
return len;
}
static inline __le16 ext3_rec_len_to_disk(unsigned len)
{
+#if (PAGE_CACHE_SIZE >= 65536)
if (len == (1 << 16))
return cpu_to_le16(EXT3_MAX_REC_LEN);
else if (len > (1 << 16))
BUG();
+#endif
return cpu_to_le16(len);
}
@@ -856,6 +865,7 @@ extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb,
extern int ext3_should_retry_alloc(struct super_block *sb, int *retries);
extern void ext3_init_block_alloc_info(struct inode *);
extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv);
+extern int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range);
/* dir.c */
extern int ext3_check_dir_entry(const char *, struct inode *,