[GFS2] Remove useless i_cache from inodes

[powerpc.git] / fs / gfs2 / inode.c

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 34f7bcd..af493fc 100644 (file)
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -31,7 +31,6 @@
 #include "log.h"
 #include "meta_io.h"
 #include "ops_address.h"
-#include "ops_file.h"
 #include "ops_inode.h"
 #include "quota.h"
 #include "rgrp.h"
@@ -77,6 +76,49 @@ static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr)
        return iget5_locked(sb, hash, iget_test, iget_set, &no_addr);
 }
 
+struct gfs2_skip_data {
+       u64     no_addr;
+       int     skipped;
+};
+
+static int iget_skip_test(struct inode *inode, void *opaque)
+{
+       struct gfs2_inode *ip = GFS2_I(inode);
+       struct gfs2_skip_data *data = opaque;
+
+       if (ip->i_no_addr == data->no_addr && inode->i_private != NULL){
+               if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)){
+                       data->skipped = 1;
+                       return 0;
+               }
+               return 1;
+       }
+       return 0;
+}
+
+static int iget_skip_set(struct inode *inode, void *opaque)
+{
+       struct gfs2_inode *ip = GFS2_I(inode);
+       struct gfs2_skip_data *data = opaque;
+
+       if (data->skipped)
+               return 1;
+       inode->i_ino = (unsigned long)(data->no_addr);
+       ip->i_no_addr = data->no_addr;
+       return 0;
+}
+
+static struct inode *gfs2_iget_skip(struct super_block *sb,
+                                   u64 no_addr)
+{
+       struct gfs2_skip_data data;
+       unsigned long hash = (unsigned long)no_addr;
+
+       data.no_addr = no_addr;
+       data.skipped = 0;
+       return iget5_locked(sb, hash, iget_skip_test, iget_skip_set, &data);
+}
+
 /**
  * GFS2 lookup code fills in vfs inode contents based on info obtained
  * from directory entry inside gfs2_inode_lookup(). This has caused issues
@@ -112,6 +154,7 @@ void gfs2_set_iop(struct inode *inode)
  * @sb: The super block
  * @no_addr: The inode number
  * @type: The type of the inode
+ * @skip_freeing: set this not return an inode if it is currently being freed.
  *
  * Returns: A VFS inode, or an error
  */
@@ -119,13 +162,19 @@ void gfs2_set_iop(struct inode *inode)
 struct inode *gfs2_inode_lookup(struct super_block *sb, 
                                unsigned int type,
                                u64 no_addr,
-                               u64 no_formal_ino)
+                               u64 no_formal_ino, int skip_freeing)
 {
-       struct inode *inode = gfs2_iget(sb, no_addr);
-       struct gfs2_inode *ip = GFS2_I(inode);
+       struct inode *inode;
+       struct gfs2_inode *ip;
        struct gfs2_glock *io_gl;
        int error;
 
+       if (skip_freeing)
+               inode = gfs2_iget_skip(sb, no_addr);
+       else
+               inode = gfs2_iget(sb, no_addr);
+       ip = GFS2_I(inode);
+
        if (!inode)
                return ERR_PTR(-ENOBUFS);
 
@@ -688,7 +737,7 @@ out:
 static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
                        const struct gfs2_inum_host *inum, unsigned int mode,
                        unsigned int uid, unsigned int gid,
-                       const u64 *generation, dev_t dev)
+                       const u64 *generation, dev_t dev, struct buffer_head **bhp)
 {
        struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
        struct gfs2_dinode *di;
@@ -743,13 +792,15 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
        di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec);
        di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec);
        memset(&di->di_reserved, 0, sizeof(di->di_reserved));
+       
+       set_buffer_uptodate(dibh);
 
-       brelse(dibh);
+       *bhp = dibh;
 }
 
 static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
                       unsigned int mode, const struct gfs2_inum_host *inum,
-                      const u64 *generation, dev_t dev)
+                      const u64 *generation, dev_t dev, struct buffer_head **bhp)
 {
        struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
        unsigned int uid, gid;
@@ -770,7 +821,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
        if (error)
                goto out_quota;
 
-       init_dinode(dip, gl, inum, mode, uid, gid, generation, dev);
+       init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp);
        gfs2_quota_change(dip, +1, uid, gid);
        gfs2_trans_end(sdp);
 
@@ -909,6 +960,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
        struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
        int error;
        u64 generation;
+       struct buffer_head *bh = NULL;
 
        if (!name->len || name->len > GFS2_FNAMESIZE)
                return ERR_PTR(-ENAMETOOLONG);
@@ -935,13 +987,13 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
        if (error)
                goto fail_gunlock;
 
-       error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev);
+       error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh);
        if (error)
                goto fail_gunlock2;
 
        inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode),
                                        inum.no_addr,
-                                       inum.no_formal_ino);
+                                       inum.no_formal_ino, 0);
        if (IS_ERR(inode))
                goto fail_gunlock2;
 
@@ -961,6 +1013,8 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
        if (error)
                goto fail_gunlock2;
 
+       if (bh)
+               brelse(bh);
        if (!inode)
                return ERR_PTR(-ENOMEM);
        return inode;
@@ -972,6 +1026,8 @@ fail_gunlock2:
 fail_gunlock:
        gfs2_glock_dq(ghs);
 fail:
+       if (bh)
+               brelse(bh);
        return ERR_PTR(error);
 }