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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>
This commit is contained in:
Ryusuke Konishi 2009-11-14 16:44:22 +09:00
parent c3ea56c800
commit 49fa7a5902
1 changed files with 15 additions and 1 deletions
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16
fs/nilfs2/ifile.c
View File

@ -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;
}