[PATCH] JFS: return correct error when i-node allocation failed

I have seen confusing behavior on JFS when I injected many intentional
slab allocation errors. The cp command failed with no disk space error
with enough disk space.

This patch makes:

- change the return value in case slab allocation failures happen
  from -ENOSPC to -ENOMEM

- ialloc() return error code so that the caller can know the reason
  of failures

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
(cherry picked from 2b46f77976f798f3fe800809a1d0ed38763c71c8 commit)

1 files changed, 5 insertions, 4 deletions

diff --git a/fs/jfs/jfs_inode.c b/fs/jfs/jfs_inode.c
index bffaca9ae3a..dbf0f77c7a4 100644
--- a/fs/jfs/jfs_inode.c
+++ b/fs/jfs/jfs_inode.c
@@ -61,7 +61,7 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
         inode = new_inode(sb);
         if (!inode) {
                 jfs_warn("ialloc: new_inode returned NULL!");
-                return inode;
+                return ERR_PTR(-ENOMEM);
         }
 
         jfs_inode = JFS_IP(inode);
@@ -69,9 +69,10 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
         rc = diAlloc(parent, S_ISDIR(mode), inode);
         if (rc) {
                 jfs_warn("ialloc: diAlloc returned %d!", rc);
-                make_bad_inode(inode);
+                if (rc == -EIO)
+                        make_bad_inode(inode);
                 iput(inode);
-                return NULL;
+                return ERR_PTR(rc);
         }
 
         inode->i_uid = current->fsuid;
@@ -97,7 +98,7 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
                 inode->i_flags |= S_NOQUOTA;
                 inode->i_nlink = 0;
                 iput(inode);
-                return NULL;
+                return ERR_PTR(-EDQUOT);
         }
 
         inode->i_mode = mode;