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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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11
fs/jffs2/write.c
View File

@ -19,7 +19,8 @@
#include "compr.h"
int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t mode, struct jffs2_raw_inode *ri)
int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
uint32_t mode, struct jffs2_raw_inode *ri)
{
struct jffs2_inode_cache *ic;
@ -31,7 +32,7 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint
memset(ic, 0, sizeof(*ic));
f->inocache = ic;
f->inocache->nlink = 1;
f->inocache->pino_nlink = 1; /* Will be overwritten shortly for directories */
f->inocache->nodes = (struct jffs2_raw_node_ref *)f->inocache;
f->inocache->state = INO_STATE_PRESENT;
@ -635,9 +636,9 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
jffs2_mark_node_obsolete(c, fd->raw);
jffs2_free_full_dirent(fd);
}
}
dead_f->inocache->nlink--;
dead_f->inocache->pino_nlink = 0;
} else
dead_f->inocache->pino_nlink--;
/* NB: Caller must set inode nlink if appropriate */
mutex_unlock(&dead_f->sem);
}