libext2fs: export inode cache creation function

Currently we have already exported inode cache flush and free functions
for users.  This commit exports inode cache creation function.  Later
we will use this function to initialize inode cache and do some unit
tests for inline data.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index 0581197..a7b6116 100644 (file)
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -1387,6 +1387,8 @@ extern errcode_t ext2fs_get_memalign(unsigned long size,
                                     unsigned long align, void *ptr);
 
 /* inode.c */
+extern errcode_t ext2fs_create_inode_cache(ext2_filsys fs,
+                                          unsigned int cache_size);
 extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
 extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
 extern errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan,

diff --git a/lib/ext2fs/ext2fsP.h b/lib/ext2fs/ext2fsP.h
index eaa203c..20257e2 100644 (file)
--- a/lib/ext2fs/ext2fsP.h
+++ b/lib/ext2fs/ext2fsP.h
@@ -69,7 +69,7 @@ struct ext2_inode_cache {
        void *                          buffer;
        blk64_t                         buffer_blk;
        int                             cache_last;
-       int                             cache_size;
+       unsigned int                    cache_size;
        int                             refcount;
        struct ext2_inode_cache_ent     *cache;
 };

diff --git a/lib/ext2fs/inode.c b/lib/ext2fs/inode.c
index 46c1c58..0cea9f0 100644 (file)
--- a/lib/ext2fs/inode.c
+++ b/lib/ext2fs/inode.c
@@ -91,7 +91,7 @@ void ext2fs_free_inode_cache(struct ext2_inode_cache *icache)
        ext2fs_free_mem(&icache);
 }
 
-static errcode_t create_icache(ext2_filsys fs)
+errcode_t ext2fs_create_inode_cache(ext2_filsys fs, unsigned int cache_size)
 {
        int             i;
        errcode_t       retval;
@@ -109,7 +109,7 @@ static errcode_t create_icache(ext2_filsys fs)
 
        fs->icache->buffer_blk = 0;
        fs->icache->cache_last = -1;
-       fs->icache->cache_size = 4;
+       fs->icache->cache_size = cache_size;
        fs->icache->refcount = 1;
        retval = ext2fs_get_array(fs->icache->cache_size,
                                  sizeof(struct ext2_inode_cache_ent),
@@ -596,7 +596,7 @@ errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
                return EXT2_ET_BAD_INODE_NUM;
        /* Create inode cache if not present */
        if (!fs->icache) {
-               retval = create_icache(fs);
+               retval = ext2fs_create_inode_cache(fs, 4);
                if (retval)
                        return retval;
        }
@@ -732,7 +732,7 @@ errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
                        }
                }
        } else {
-               retval = create_icache(fs);
+               retval = ext2fs_create_inode_cache(fs, 4);
                if (retval)
                        goto errout;
        }