[Libsysio-commit] cplant: libsysio/include inode.h

[Ruth K. <rk...@us...>]

Update of /cvsroot/libsysio/libsysio/include
In directory sc8-pr-cvs1:/tmp/cvs-serv19555/include

Modified Files:
      Tag: cplant
	inode.h 
Log Message:

Add capability of checking inode generation numbers, 
if a field for it exists in the stat struct.

Bug fix for unlink/creat failure:
Changes allow re-use of an inode which is no longer in use, but
still exists in the inode cache. If the stat info for the new use 
matches cached info, the inode is re-used. If not, the old inode is 
marked 'zombie' and removed from the inode cache to make way for 
the new inode.



Index: inode.h
===================================================================
RCS file: /cvsroot/libsysio/libsysio/include/inode.h,v
retrieving revision 1.4.2.1
retrieving revision 1.4.2.2
diff -u -w -b -B -p -r1.4.2.1 -r1.4.2.2
--- inode.h	28 Apr 2003 20:43:50 -0000	1.4.2.1
+++ inode.h	24 Jul 2003 22:52:57 -0000	1.4.2.2
@@ -129,6 +129,7 @@ struct inode_ops {
 struct inode {
     LIST_ENTRY(inode) i_link;                           /* FS i-nodes link */
     unsigned i_immune			: 1;		/* immune from GC */
+    unsigned i_zombie                 : 1;		/* stale inode */
     unsigned i_ref;                                     /* soft ref counter */
     ino_t   i_num;                                      /* i-num (deprecate!) */
     mode_t  i_mode;                                     /* mode (see stat.h) */
@@ -146,6 +147,7 @@ struct inode {
 #define I_INIT(ino, fs, inum, mode, rdev, ops, fid, immunity, private) \
     do { \
         (ino)->i_immune = (immunity) ? 1 : 0; \
+        (ino)->i_zombie = 0; \
         (ino)->i_ref = 0; \
         (ino)->i_num = (inum); \
         (ino)->i_mode = (mode); \
@@ -407,6 +409,7 @@ extern struct inode *_sysio_i_find(struc
                                    ino_t ino,
                                    struct file_identifier *fid);
 extern void _sysio_i_gone(struct inode *ino);
+extern void _sysio_i_undead(struct inode *ino);
 extern int _sysio_p_find_alias(struct pnode *parent,
                                struct qstr *name,
                                struct pnode **pnop);