nilfs2: use iget5_locked to get inode
This uses iget5_locked instead of iget_locked so that gc cache can
look up inodes with an inode number and an optional checkpoint number.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index f1750ca..6e9df85 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -34,6 +34,11 @@
#include "cpfile.h"
#include "ifile.h"
+struct nilfs_iget_args {
+ u64 ino;
+ __u64 cno;
+ int for_gc;
+};
/**
* nilfs_get_block() - get a file block on the filesystem (callback function)
@@ -320,7 +325,6 @@
/* ii->i_file_acl = 0; */
/* ii->i_dir_acl = 0; */
ii->i_dir_start_lookup = 0;
- ii->i_cno = 0;
nilfs_set_inode_flags(inode);
spin_lock(&sbi->s_next_gen_lock);
inode->i_generation = sbi->s_next_generation++;
@@ -410,7 +414,6 @@
0 : le32_to_cpu(raw_inode->i_dir_acl);
#endif
ii->i_dir_start_lookup = 0;
- ii->i_cno = 0;
inode->i_generation = le32_to_cpu(raw_inode->i_generation);
if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
@@ -476,12 +479,40 @@
return err;
}
+static int nilfs_iget_test(struct inode *inode, void *opaque)
+{
+ struct nilfs_iget_args *args = opaque;
+ struct nilfs_inode_info *ii;
+
+ if (args->ino != inode->i_ino)
+ return 0;
+
+ ii = NILFS_I(inode);
+ if (!test_bit(NILFS_I_GCINODE, &ii->i_state))
+ return !args->for_gc;
+
+ return args->for_gc && args->cno == ii->i_cno;
+}
+
+static int nilfs_iget_set(struct inode *inode, void *opaque)
+{
+ struct nilfs_iget_args *args = opaque;
+
+ inode->i_ino = args->ino;
+ if (args->for_gc) {
+ NILFS_I(inode)->i_state = 1 << NILFS_I_GCINODE;
+ NILFS_I(inode)->i_cno = args->cno;
+ }
+ return 0;
+}
+
struct inode *nilfs_iget(struct super_block *sb, unsigned long ino)
{
+ struct nilfs_iget_args args = { .ino = ino, .cno = 0, .for_gc = 0 };
struct inode *inode;
int err;
- inode = iget_locked(sb, ino);
+ inode = iget5_locked(sb, ino, nilfs_iget_test, nilfs_iget_set, &args);
if (unlikely(!inode))
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))