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[JFFS2] Track parent inode for directories (for NFS export)

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To support NFS export, we need to know the parent inode of directories.
Rather than growing the jffs2_inode_cache structure, share space with
the nlink field -- which was always set to 1 for directories anyway.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse
2008-05-01 18:47:17 +01:00
parent 1b690b4878
commit 27c72b040c
12 changed files with 70 additions and 42 deletions
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5
fs/jffs2/fs.c
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@@ -273,7 +273,7 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
inode->i_mtime = ITIME(je32_to_cpu(latest_node.mtime));
inode->i_ctime = ITIME(je32_to_cpu(latest_node.ctime));
inode->i_nlink = f->inocache->nlink;
inode->i_nlink = f->inocache->pino_nlink;
inode->i_blocks = (inode->i_size + 511) >> 9;
@@ -286,13 +286,12 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
case S_IFDIR:
{
struct jffs2_full_dirent *fd;
inode->i_nlink = 2; /* parent and '.' */
for (fd=f->dents; fd; fd = fd->next) {
if (fd->type == DT_DIR && fd->ino)
inc_nlink(inode);
}
/* and '..' */
inc_nlink(inode);
/* Root dir gets i_nlink 3 for some reason */
if (inode->i_ino == 1)
inc_nlink(inode);