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path: root/fs/gfs2/inode.c
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Diffstat (limited to 'fs/gfs2/inode.c')
-rw-r--r--fs/gfs2/inode.c33
1 files changed, 24 insertions, 9 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 812a6ae03f6c..499f861b6e09 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -114,6 +114,10 @@ static void gfs2_set_iop(struct inode *inode)
* placeholder because it doesn't otherwise make sense), the on-disk block type
* is verified to be @blktype.
*
+ * When @no_formal_ino is non-zero, this function will return ERR_PTR(-ESTALE)
+ * if it detects that @no_formal_ino doesn't match the actual inode generation
+ * number. However, it doesn't always know unless @type is DT_UNKNOWN.
+ *
* Returns: A VFS inode, or an error
*/
@@ -157,6 +161,11 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type,
if (error)
goto fail;
+ error = -ESTALE;
+ if (no_formal_ino &&
+ gfs2_inode_already_deleted(ip->i_gl, no_formal_ino))
+ goto fail;
+
if (blktype != GFS2_BLKST_FREE) {
error = gfs2_check_blk_type(sdp, no_addr,
blktype);
@@ -189,13 +198,23 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type,
inode->i_mode = DT2IF(type);
}
+ if (gfs2_holder_initialized(&i_gh))
+ gfs2_glock_dq_uninit(&i_gh);
+
gfs2_set_iop(inode);
+ }
- unlock_new_inode(inode);
+ if (no_formal_ino && ip->i_no_formal_ino &&
+ no_formal_ino != ip->i_no_formal_ino) {
+ if (inode->i_state & I_NEW)
+ goto fail;
+ iput(inode);
+ return ERR_PTR(-ESTALE);
}
- if (gfs2_holder_initialized(&i_gh))
- gfs2_glock_dq_uninit(&i_gh);
+ if (inode->i_state & I_NEW)
+ unlock_new_inode(inode);
+
return inode;
fail:
@@ -221,16 +240,12 @@ struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
struct inode *inode;
int error;
- inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, blktype);
+ inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, no_formal_ino,
+ blktype);
if (IS_ERR(inode))
return inode;
- /* Two extra checks for NFS only */
if (no_formal_ino) {
- error = -ESTALE;
- if (GFS2_I(inode)->i_no_formal_ino != no_formal_ino)
- goto fail_iput;
-
error = -EIO;
if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM)
goto fail_iput;