[GFS2] Add generation number

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / gfs2 / ops_export.c

diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index b27bce74a795ff6627ac941f75f60da2bad6f305..eacc1c092f91f12ab82a4b0985f47afb259b16a8 100644 (file)
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -13,7 +13,7 @@
 #include <linux/completion.h>
 #include <linux/buffer_head.h>
 #include <linux/gfs2_ondisk.h>
-#include <asm/semaphore.h>
+#include <linux/crc32.h>
 
 #include "gfs2.h"
 #include "lm_interface.h"
@@ -66,7 +66,7 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *fh, int *len,
 {
        struct inode *inode = dentry->d_inode;
        struct super_block *sb = inode->i_sb;
-       struct gfs2_inode *ip = inode->u.generic_ip;
+       struct gfs2_inode *ip = GFS2_I(inode);
 
        if (*len < 4 || (connectable && *len < 8))
                return 255;
@@ -86,8 +86,8 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *fh, int *len,
 
        spin_lock(&dentry->d_lock);
        inode = dentry->d_parent->d_inode;
-       ip = inode->u.generic_ip;
-       gfs2_inode_hold(ip);
+       ip = GFS2_I(inode);
+       igrab(inode);
        spin_unlock(&dentry->d_lock);
 
        fh[4] = ip->i_num.no_formal_ino >> 32;
@@ -100,7 +100,7 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *fh, int *len,
        fh[7] = cpu_to_be32(fh[7]);
        *len = 8;
 
-       gfs2_inode_put(ip);
+       iput(inode);
 
        return *len;
 }
@@ -142,8 +142,8 @@ static int gfs2_get_name(struct dentry *parent, char *name,
        if (!S_ISDIR(dir->i_mode) || !inode)
                return -EINVAL;
 
-       dip = dir->u.generic_ip;
-       ip = inode->u.generic_ip;
+       dip = GFS2_I(dir);
+       ip = GFS2_I(inode);
 
        *name = 0;
        gnfd.inum = ip->i_num;
@@ -153,7 +153,7 @@ static int gfs2_get_name(struct dentry *parent, char *name,
        if (error)
                return error;
 
-       error = gfs2_dir_read(dip, &offset, &gnfd, get_name_filldir);
+       error = gfs2_dir_read(dir, &offset, &gnfd, get_name_filldir);
 
        gfs2_glock_dq_uninit(&gh);
 
@@ -165,12 +165,11 @@ static int gfs2_get_name(struct dentry *parent, char *name,
 
 static struct dentry *gfs2_get_parent(struct dentry *child)
 {
-       struct qstr dotdot = { .name = "..", .len = 2 };
+       struct qstr dotdot;
        struct inode *inode;
        struct dentry *dentry;
 
-       dotdot.hash = gfs2_disk_hash(dotdot.name, dotdot.len);
-
+       gfs2_str2qstr(&dotdot, "..");
        inode = gfs2_lookupi(child->d_inode, &dotdot, 1, NULL);
 
        if (!inode)
@@ -190,39 +189,30 @@ static struct dentry *gfs2_get_parent(struct dentry *child)
 static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_p)
 {
        struct gfs2_sbd *sdp = sb->s_fs_info;
-       struct gfs2_inum *inum = (struct gfs2_inum *)inum_p;
+       struct gfs2_inum *inum = inum_p;
        struct gfs2_holder i_gh, ri_gh, rgd_gh;
        struct gfs2_rgrpd *rgd;
-       struct gfs2_inode *ip;
        struct inode *inode;
        struct dentry *dentry;
        int error;
 
        /* System files? */
 
-       inode = gfs2_iget(sb, inum);
+       inode = gfs2_ilookup(sb, inum);
        if (inode) {
-               ip = inode->u.generic_ip;
-               if (ip->i_num.no_formal_ino != inum->no_formal_ino) {
+               if (GFS2_I(inode)->i_num.no_formal_ino != inum->no_formal_ino) {
                        iput(inode);
                        return ERR_PTR(-ESTALE);
                }
                goto out_inode;
        }
 
-       error = gfs2_glock_nq_num(sdp,
-                                 inum->no_addr, &gfs2_inode_glops,
+       error = gfs2_glock_nq_num(sdp, inum->no_addr, &gfs2_inode_glops,
                                  LM_ST_SHARED, LM_FLAG_ANY | GL_LOCAL_EXCL,
                                  &i_gh);
        if (error)
                return ERR_PTR(error);
 
-       error = gfs2_inode_get(i_gh.gh_gl, inum, NO_CREATE, &ip);
-       if (error)
-               goto fail;
-       if (ip)
-               goto out_ip;
-
        error = gfs2_rindex_hold(sdp, &ri_gh);
        if (error)
                goto fail;
@@ -243,32 +233,29 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_p)
        gfs2_glock_dq_uninit(&rgd_gh);
        gfs2_glock_dq_uninit(&ri_gh);
 
-       error = gfs2_inode_get(i_gh.gh_gl, inum, CREATE, &ip);
-       if (error)
+       inode = gfs2_inode_lookup(sb, inum, DT_UNKNOWN);
+       if (!inode)
+               goto fail;
+       if (IS_ERR(inode)) {
+               error = PTR_ERR(inode);
                goto fail;
+       }
 
-       error = gfs2_inode_refresh(ip);
+       error = gfs2_inode_refresh(GFS2_I(inode));
        if (error) {
-               gfs2_inode_put(ip);
+               iput(inode);
                goto fail;
        }
 
- out_ip:
        error = -EIO;
-       if (ip->i_di.di_flags & GFS2_DIF_SYSTEM) {
-               gfs2_inode_put(ip);
+       if (GFS2_I(inode)->i_di.di_flags & GFS2_DIF_SYSTEM) {
+               iput(inode);
                goto fail;
        }
 
        gfs2_glock_dq_uninit(&i_gh);
 
-       inode = gfs2_ip2v(ip);
-       gfs2_inode_put(ip);
-
-       if (!inode)
-               return ERR_PTR(-ENOMEM);
-
- out_inode:
+out_inode:
        dentry = d_alloc_anon(inode);
        if (!dentry) {
                iput(inode);
@@ -277,13 +264,13 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_p)
 
        return dentry;
 
- fail_rgd:
+fail_rgd:
        gfs2_glock_dq_uninit(&rgd_gh);
 
- fail_rindex:
+fail_rindex:
        gfs2_glock_dq_uninit(&ri_gh);
 
- fail:
+fail:
        gfs2_glock_dq_uninit(&i_gh);
        return ERR_PTR(error);
 }