nilfs2: add palloc cache to ifile

This adds the palloc cache to ifile.  The palloc cache is allocated on
the extended region of nilfs_mdt_info struct.  The struct
nilfs_ifile_info defines the extended on memory structure of ifile.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

1 files changed, 15 insertions, 1 deletions

diff --git a/fs/nilfs2/ifile.c b/fs/nilfs2/ifile.c
index c1c1fd30c315..922d9dd42c8f 100644
--- a/fs/nilfs2/ifile.c
+++ b/fs/nilfs2/ifile.c
@@ -29,6 +29,17 @@
 #include "alloc.h"
 #include "ifile.h"
 
+
+struct nilfs_ifile_info {
+        struct nilfs_mdt_info mi;
+        struct nilfs_palloc_cache palloc_cache;
+};
+
+static inline struct nilfs_ifile_info *NILFS_IFILE_I(struct inode *ifile)
+{
+        return (struct nilfs_ifile_info *)NILFS_MDT(ifile);
+}
+
 /**
  * nilfs_ifile_create_inode - create a new disk inode
  * @ifile: ifile inode
@@ -159,13 +170,16 @@ struct inode *nilfs_ifile_new(struct nilfs_sb_info *sbi, size_t inode_size)
         struct inode *ifile;
         int err;
 
-        ifile = nilfs_mdt_new(sbi->s_nilfs, sbi->s_super, NILFS_IFILE_INO, 0);
+        ifile = nilfs_mdt_new(sbi->s_nilfs, sbi->s_super, NILFS_IFILE_INO,
+                              sizeof(struct nilfs_ifile_info));
         if (ifile) {
                 err = nilfs_palloc_init_blockgroup(ifile, inode_size);
                 if (unlikely(err)) {
                         nilfs_mdt_destroy(ifile);
                         return NULL;
                 }
+                nilfs_palloc_setup_cache(ifile,
+                                         &NILFS_IFILE_I(ifile)->palloc_cache);
         }
         return ifile;
 }