1 files changed, 95 insertions, 8 deletions

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index b1bf2694fb2b..b5612cbb62a5 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -158,7 +158,6 @@ 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
  */
@@ -166,17 +165,14 @@ 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, int skip_freeing)
+                                u64 no_formal_ino)
 {
         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);
+        inode = gfs2_iget(sb, no_addr);
         ip = GFS2_I(inode);
 
         if (!inode)
@@ -234,11 +230,102 @@ fail_glock:
 fail_iopen:
         gfs2_glock_put(io_gl);
 fail_put:
+        if (inode->i_state & I_NEW)
+                ip->i_gl->gl_object = NULL;
+        gfs2_glock_put(ip->i_gl);
+fail:
+        if (inode->i_state & I_NEW)
+                iget_failed(inode);
+        else
+                iput(inode);
+        return ERR_PTR(error);
+}
+
+/**
+ * gfs2_process_unlinked_inode - Lookup an unlinked inode for reclamation
+ *                               and try to reclaim it by doing iput.
+ *
+ * This function assumes no rgrp locks are currently held.
+ *
+ * @sb: The super block
+ * no_addr: The inode number
+ *
+ */
+
+void gfs2_process_unlinked_inode(struct super_block *sb, u64 no_addr)
+{
+        struct gfs2_sbd *sdp;
+        struct gfs2_inode *ip;
+        struct gfs2_glock *io_gl;
+        int error;
+        struct gfs2_holder gh;
+        struct inode *inode;
+
+        inode = gfs2_iget_skip(sb, no_addr);
+
+        if (!inode)
+                return;
+
+        /* If it's not a new inode, someone's using it, so leave it alone. */
+        if (!(inode->i_state & I_NEW)) {
+                iput(inode);
+                return;
+        }
+
+        ip = GFS2_I(inode);
+        sdp = GFS2_SB(inode);
+        ip->i_no_formal_ino = -1;
+
+        error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
+        if (unlikely(error))
+                goto fail;
+        ip->i_gl->gl_object = ip;
+
+        error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
+        if (unlikely(error))
+                goto fail_put;
+
+        set_bit(GIF_INVALID, &ip->i_flags);
+        error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, LM_FLAG_TRY | GL_EXACT,
+                                   &ip->i_iopen_gh);
+        if (unlikely(error))
+                goto fail_iopen;
+
+        ip->i_iopen_gh.gh_gl->gl_object = ip;
+        gfs2_glock_put(io_gl);
+
+        inode->i_mode = DT2IF(DT_UNKNOWN);
+
+        /*
+         * We must read the inode in order to work out its type in
+         * this case. Note that this doesn't happen often as we normally
+         * know the type beforehand. This code path only occurs during
+         * unlinked inode recovery (where it is safe to do this glock,
+         * which is not true in the general case).
+         */
+        error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, LM_FLAG_TRY,
+                                   &gh);
+        if (unlikely(error))
+                goto fail_glock;
+
+        /* Inode is now uptodate */
+        gfs2_glock_dq_uninit(&gh);
+        gfs2_set_iop(inode);
+
+        /* The iput will cause it to be deleted. */
+        iput(inode);
+        return;
+
+fail_glock:
+        gfs2_glock_dq(&ip->i_iopen_gh);
+fail_iopen:
+        gfs2_glock_put(io_gl);
+fail_put:
         ip->i_gl->gl_object = NULL;
         gfs2_glock_put(ip->i_gl);
 fail:
         iget_failed(inode);
-        return ERR_PTR(error);
+        return;
 }
 
 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
@@ -862,7 +949,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
                 goto fail_gunlock2;
 
         inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr,
-                                  inum.no_formal_ino, 0);
+                                  inum.no_formal_ino);
         if (IS_ERR(inode))
                 goto fail_gunlock2;