gfs2: Get rid of gfs2_ilookup

Now that gfs2_lookup_by_inum only takes the inode glock for new inodes
(and not for cached inodes anymore), there no longer is a need to
optimize the cached-inode case in gfs2_get_dentry or delete_work_func,
and gfs2_ilookup can be removed.

In addition, gfs2_get_dentry wasn't checking the GFS2_DIF_SYSTEM flag in
i_diskflags in the gfs2_ilookup case (see gfs2_lookup_by_inum); this
inconsistency goes away as well.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>

diff --git a/fs/gfs2/export.c b/fs/gfs2/export.c
index d5bda85..a332f3c 100644 (file)
--- a/fs/gfs2/export.c
+++ b/fs/gfs2/export.c
@@ -137,21 +137,10 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb,
        struct gfs2_sbd *sdp = sb->s_fs_info;
        struct inode *inode;
 
-       inode = gfs2_ilookup(sb, inum->no_addr);
-       if (inode) {
-               if (GFS2_I(inode)->i_no_formal_ino != inum->no_formal_ino) {
-                       iput(inode);
-                       return ERR_PTR(-ESTALE);
-               }
-               goto out_inode;
-       }
-
        inode = gfs2_lookup_by_inum(sdp, inum->no_addr, &inum->no_formal_ino,
                                    GFS2_BLKST_DINODE);
        if (IS_ERR(inode))
                return ERR_CAST(inode);
-
-out_inode:
        return d_obtain_alias(inode);
 }
 

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index ce46375..1138a61 100644 (file)
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -575,8 +575,7 @@ static void delete_work_func(struct work_struct *work)
 {
        struct gfs2_glock *gl = container_of(work, struct gfs2_glock, gl_delete);
        struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
-       struct gfs2_inode *ip;
-       struct inode *inode = NULL;
+       struct inode *inode;
        u64 no_addr = gl->gl_name.ln_number;
 
        /* If someone's using this glock to create a new dinode, the block must
@@ -585,13 +584,7 @@ static void delete_work_func(struct work_struct *work)
        if (test_bit(GLF_INODE_CREATING, &gl->gl_flags))
                goto out;
 
-       ip = gl->gl_object;
-       /* Note: Unsafe to dereference ip as we don't hold right refs/locks */
-
-       if (ip)
-               inode = gfs2_ilookup(sdp->sd_vfs, no_addr);
-       if (IS_ERR_OR_NULL(inode))
-               inode = gfs2_lookup_by_inum(sdp, no_addr, NULL, GFS2_BLKST_UNLINKED);
+       inode = gfs2_lookup_by_inum(sdp, no_addr, NULL, GFS2_BLKST_UNLINKED);
        if (inode && !IS_ERR(inode)) {
                d_prune_aliases(inode);
                iput(inode);

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 6d5c6bb..ebff26e 100644 (file)
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -37,21 +37,6 @@
 #include "super.h"
 #include "glops.h"
 
-struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr)
-{
-       struct inode *inode;
-
-repeat:
-       inode = ilookup(sb, no_addr);
-       if (!inode)
-               return inode;
-       if (is_bad_inode(inode)) {
-               iput(inode);
-               goto repeat;
-       }
-       return inode;
-}
-
 static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr)
 {
        struct inode *inode;

diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index 443b46c..7710dfd 100644 (file)
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -99,7 +99,6 @@ extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
 extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
                                         u64 *no_formal_ino,
                                         unsigned int blktype);
-extern struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);
 
 extern int gfs2_inode_refresh(struct gfs2_inode *ip);