Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p)
[linux-2.6.git] / fs / gfs2 / ops_inode.c
index f40a848..e874129 100644 (file)
@@ -7,7 +7,6 @@
  * of the GNU General Public License version 2.
  */
 
-#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/completion.h>
@@ -62,7 +61,7 @@ static int gfs2_create(struct inode *dir, struct dentry *dentry,
                inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode, 0);
                if (!IS_ERR(inode)) {
                        gfs2_trans_end(sdp);
-                       if (dip->i_alloc.al_rgd)
+                       if (dip->i_alloc->al_rgd)
                                gfs2_inplace_release(dip);
                        gfs2_quota_unlock(dip);
                        gfs2_alloc_put(dip);
@@ -70,7 +69,7 @@ static int gfs2_create(struct inode *dir, struct dentry *dentry,
                        mark_inode_dirty(inode);
                        break;
                } else if (PTR_ERR(inode) != -EEXIST ||
-                          (nd->intent.open.flags & O_EXCL)) {
+                          (nd && (nd->intent.open.flags & O_EXCL))) {
                        gfs2_holder_uninit(ghs);
                        return PTR_ERR(inode);
                }
@@ -112,10 +111,20 @@ static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
 
        inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
        if (inode && IS_ERR(inode))
-               return ERR_PTR(PTR_ERR(inode));
-
-       if (inode)
+               return ERR_CAST(inode);
+
+       if (inode) {
+               struct gfs2_glock *gl = GFS2_I(inode)->i_gl;
+               struct gfs2_holder gh;
+               int error;
+               error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
+               if (error) {
+                       iput(inode);
+                       return ERR_PTR(error);
+               }
+               gfs2_glock_dq_uninit(&gh);
                return d_splice_alias(inode, dentry);
+       }
        d_add(dentry, inode);
 
        return NULL;
@@ -158,7 +167,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
        if (error)
                goto out_gunlock;
 
-       error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL);
+       error = gfs2_dir_check(dir, &dentry->d_name, NULL);
        switch (error) {
        case -ENOENT:
                break;
@@ -207,7 +216,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
                        goto out_gunlock_q;
 
                error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
-                                        al->al_rgd->rd_ri.ri_length +
+                                        al->al_rgd->rd_length +
                                         2 * RES_DINODE + RES_STATFS +
                                         RES_QUOTA, 0);
                if (error)
@@ -218,8 +227,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
                        goto out_ipres;
        }
 
-       error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num,
-                            IF2DT(inode->i_mode));
+       error = gfs2_dir_add(dir, &dentry->d_name, ip, IF2DT(inode->i_mode));
        if (error)
                goto out_end_trans;
 
@@ -276,21 +284,29 @@ static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
        gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
        gfs2_holder_init(ip->i_gl,  LM_ST_EXCLUSIVE, 0, ghs + 1);
 
-       rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
+       rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
        gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
 
 
-       error = gfs2_glock_nq_m(3, ghs);
+       error = gfs2_glock_nq(ghs); /* parent */
        if (error)
-               goto out;
+               goto out_parent;
+
+       error = gfs2_glock_nq(ghs + 1); /* child */
+       if (error)
+               goto out_child;
+
+       error = gfs2_glock_nq(ghs + 2); /* rgrp */
+       if (error)
+               goto out_rgrp;
 
        error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
        if (error)
-               goto out_gunlock;
+               goto out_rgrp;
 
        error = gfs2_trans_begin(sdp, 2*RES_DINODE + RES_LEAF + RES_RG_BIT, 0);
        if (error)
-               goto out_gunlock;
+               goto out_rgrp;
 
        error = gfs2_dir_del(dip, &dentry->d_name);
         if (error)
@@ -300,12 +316,15 @@ static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
 
 out_end_trans:
        gfs2_trans_end(sdp);
-out_gunlock:
-       gfs2_glock_dq_m(3, ghs);
-out:
-       gfs2_holder_uninit(ghs);
-       gfs2_holder_uninit(ghs + 1);
+       gfs2_glock_dq(ghs + 2);
+out_rgrp:
        gfs2_holder_uninit(ghs + 2);
+       gfs2_glock_dq(ghs + 1);
+out_child:
+       gfs2_holder_uninit(ghs + 1);
+       gfs2_glock_dq(ghs);
+out_parent:
+       gfs2_holder_uninit(ghs);
        gfs2_glock_dq_uninit(&ri_gh);
        return error;
 }
@@ -357,7 +376,7 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
        }
 
        gfs2_trans_end(sdp);
-       if (dip->i_alloc.al_rgd)
+       if (dip->i_alloc->al_rgd)
                gfs2_inplace_release(dip);
        gfs2_quota_unlock(dip);
        gfs2_alloc_put(dip);
@@ -421,7 +440,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
                dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
                gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
 
-               gfs2_inum_out(&dip->i_num, &dent->de_inum);
+               gfs2_inum_out(dip, dent);
                dent->de_type = cpu_to_be16(DT_DIR);
 
                gfs2_dinode_out(ip, di);
@@ -433,7 +452,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
        gfs2_assert_withdraw(sdp, !error); /* dip already pinned */
 
        gfs2_trans_end(sdp);
-       if (dip->i_alloc.al_rgd)
+       if (dip->i_alloc->al_rgd)
                gfs2_inplace_release(dip);
        gfs2_quota_unlock(dip);
        gfs2_alloc_put(dip);
@@ -473,7 +492,7 @@ static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
        gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
        gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
 
-       rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
+       rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
        gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
 
        error = gfs2_glock_nq_m(3, ghs);
@@ -539,7 +558,7 @@ static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
        }
 
        gfs2_trans_end(sdp);
-       if (dip->i_alloc.al_rgd)
+       if (dip->i_alloc->al_rgd)
                gfs2_inplace_release(dip);
        gfs2_quota_unlock(dip);
        gfs2_alloc_put(dip);
@@ -615,7 +634,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
                 * this is the case of the target file already existing
                 * so we unlink before doing the rename
                 */
-               nrgd = gfs2_blk2rgrpd(sdp, nip->i_num.no_addr);
+               nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr);
                if (nrgd)
                        gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
        }
@@ -654,7 +673,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
                if (error)
                        goto out_gunlock;
 
-               error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL);
+               error = gfs2_dir_check(ndir, &ndentry->d_name, NULL);
                switch (error) {
                case -ENOENT:
                        error = 0;
@@ -713,7 +732,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
                        goto out_gunlock_q;
 
                error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
-                                        al->al_rgd->rd_ri.ri_length +
+                                        al->al_rgd->rd_length +
                                         4 * RES_DINODE + 4 * RES_LEAF +
                                         RES_STATFS + RES_QUOTA + 4, 0);
                if (error)
@@ -751,7 +770,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
                if (error)
                        goto out_end_trans;
 
-               error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
+               error = gfs2_dir_mvino(ip, &name, ndip, DT_DIR);
                if (error)
                        goto out_end_trans;
        } else {
@@ -759,7 +778,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
                error = gfs2_meta_inode_buffer(ip, &dibh);
                if (error)
                        goto out_end_trans;
-               ip->i_inode.i_ctime = CURRENT_TIME_SEC;
+               ip->i_inode.i_ctime = CURRENT_TIME;
                gfs2_trans_add_bh(ip->i_gl, dibh, 1);
                gfs2_dinode_out(ip, dibh->b_data);
                brelse(dibh);
@@ -769,8 +788,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
        if (error)
                goto out_end_trans;
 
-       error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num,
-                            IF2DT(ip->i_inode.i_mode));
+       error = gfs2_dir_add(ndir, &ndentry->d_name, ip, IF2DT(ip->i_inode.i_mode));
        if (error)
                goto out_end_trans;
 
@@ -897,17 +915,22 @@ static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
 static int setattr_size(struct inode *inode, struct iattr *attr)
 {
        struct gfs2_inode *ip = GFS2_I(inode);
+       struct gfs2_sbd *sdp = GFS2_SB(inode);
        int error;
 
        if (attr->ia_size != ip->i_di.di_size) {
-               error = vmtruncate(inode, attr->ia_size);
+               error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks);
                if (error)
                        return error;
+               error = vmtruncate(inode, attr->ia_size);
+               gfs2_trans_end(sdp);
+               if (error) 
+                       return error;
        }
 
        error = gfs2_truncatei(ip, attr->ia_size);
-       if (error)
-               return error;
+       if (error && (inode->i_size != ip->i_di.di_size))
+               i_size_write(inode, ip->i_di.di_size);
 
        return error;
 }
@@ -1115,7 +1138,7 @@ static int gfs2_removexattr(struct dentry *dentry, const char *name)
        return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er);
 }
 
-struct inode_operations gfs2_file_iops = {
+const struct inode_operations gfs2_file_iops = {
        .permission = gfs2_permission,
        .setattr = gfs2_setattr,
        .getattr = gfs2_getattr,
@@ -1125,7 +1148,7 @@ struct inode_operations gfs2_file_iops = {
        .removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_dev_iops = {
+const struct inode_operations gfs2_dev_iops = {
        .permission = gfs2_permission,
        .setattr = gfs2_setattr,
        .getattr = gfs2_getattr,
@@ -1135,7 +1158,7 @@ struct inode_operations gfs2_dev_iops = {
        .removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_dir_iops = {
+const struct inode_operations gfs2_dir_iops = {
        .create = gfs2_create,
        .lookup = gfs2_lookup,
        .link = gfs2_link,
@@ -1154,7 +1177,7 @@ struct inode_operations gfs2_dir_iops = {
        .removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_symlink_iops = {
+const struct inode_operations gfs2_symlink_iops = {
        .readlink = gfs2_readlink,
        .follow_link = gfs2_follow_link,
        .permission = gfs2_permission,