fs: do not assign default i_ino in new_inode

Instead of always assigning an increasing inode number in new_inode
move the call to assign it into those callers that actually need it.
For now callers that need it is estimated conservatively, that is
the call is added to all filesystems that do not assign an i_ino
by themselves.  For a few more filesystems we can avoid assigning
any inode number given that they aren't user visible, and for others
it could be done lazily when an inode number is actually needed,
but that's left for later patches.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

7 files changed, 7 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_fs.c b/drivers/infiniband/hw/ipath/ipath_fs.c
index d13e72685dcf..12d5bf76302c 100644
--- a/drivers/infiniband/hw/ipath/ipath_fs.c
+++ b/drivers/infiniband/hw/ipath/ipath_fs.c
@@ -57,6 +57,7 @@ static int ipathfs_mknod(struct inode *dir, struct dentry *dentry,
                 goto bail;
         }
 
+        inode->i_ino = get_next_ino();
         inode->i_mode = mode;
         inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
         inode->i_private = data;
diff --git a/drivers/infiniband/hw/qib/qib_fs.c b/drivers/infiniband/hw/qib/qib_fs.c
index a0e6613e8be6..7e433d75c775 100644
--- a/drivers/infiniband/hw/qib/qib_fs.c
+++ b/drivers/infiniband/hw/qib/qib_fs.c
@@ -58,6 +58,7 @@ static int qibfs_mknod(struct inode *dir, struct dentry *dentry,
                 goto bail;
         }
 
+        inode->i_ino = get_next_ino();
         inode->i_mode = mode;
         inode->i_uid = 0;
         inode->i_gid = 0;
diff --git a/drivers/misc/ibmasm/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c
index af2497ae5fe3..0a53500636c9 100644
--- a/drivers/misc/ibmasm/ibmasmfs.c
+++ b/drivers/misc/ibmasm/ibmasmfs.c
@@ -146,6 +146,7 @@ static struct inode *ibmasmfs_make_inode(struct super_block *sb, int mode)
         struct inode *ret = new_inode(sb);
 
         if (ret) {
+                ret->i_ino = get_next_ino();
                 ret->i_mode = mode;
                 ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME;
         }
diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c
index 95f711b251ad..449de59bf35b 100644
--- a/drivers/oprofile/oprofilefs.c
+++ b/drivers/oprofile/oprofilefs.c
@@ -28,6 +28,7 @@ static struct inode *oprofilefs_get_inode(struct super_block *sb, int mode)
         struct inode *inode = new_inode(sb);
 
         if (inode) {
+                inode->i_ino = get_next_ino();
                 inode->i_mode = mode;
                 inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
         }
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 095fa5366690..e2f63c0ea09d 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -276,6 +276,7 @@ static struct inode *usbfs_get_inode (struct super_block *sb, int mode, dev_t de
         struct inode *inode = new_inode(sb);
 
         if (inode) {
+                inode->i_ino = get_next_ino();
                 inode->i_mode = mode;
                 inode->i_uid = current_fsuid();
                 inode->i_gid = current_fsgid();
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index e4f595055208..e093fd8d04d3 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -980,6 +980,7 @@ ffs_sb_make_inode(struct super_block *sb, void *data,
         if (likely(inode)) {
                 struct timespec current_time = CURRENT_TIME;
 
+                inode->i_ino     = usbfs_get_inode();
                 inode->i_mode    = perms->mode;
                 inode->i_uid     = perms->uid;
                 inode->i_gid     = perms->gid;
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index d1d72d946b04..ba145e7fbe03 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1991,6 +1991,7 @@ gadgetfs_make_inode (struct super_block *sb,
         struct inode *inode = new_inode (sb);
 
         if (inode) {
+                inode->i_ino = get_next_ino();
                 inode->i_mode = mode;
                 inode->i_uid = default_uid;
                 inode->i_gid = default_gid;