switch infinibarf users of fget() to fget_light()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 10 insertions, 14 deletions

diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 055ed59838dc..6b2ae729de92 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -1186,13 +1186,13 @@ static ssize_t ucma_migrate_id(struct ucma_file *new_file,
         struct ucma_context *ctx;
         struct file *filp;
         struct ucma_file *cur_file;
-        int ret = 0;
+        int ret = 0, fput_needed;
 
         if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
                 return -EFAULT;
 
         /* Get current fd to protect against it being closed */
-        filp = fget(cmd.fd);
+        filp = fget_light(cmd.fd, &fput_needed);
         if (!filp)
                 return -ENOENT;
 
@@ -1231,7 +1231,7 @@ response:
 
         ucma_put_ctx(ctx);
 file_put:
-        fput(filp);
+        fput_light(filp, fput_needed);
         return ret;
 }
 
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index f9d0d7c413a2..402679bd30a3 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -707,7 +707,7 @@ ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file,
         struct ib_xrcd                 *xrcd = NULL;
         struct file                    *f = NULL;
         struct inode                   *inode = NULL;
-        int                             ret = 0;
+        int                             ret = 0, fput_needed;
         int                             new_xrcd = 0;
 
         if (out_len < sizeof resp)
@@ -724,18 +724,13 @@ ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file,
 
         if (cmd.fd != -1) {
                 /* search for file descriptor */
-                f = fget(cmd.fd);
+                f = fget_light(cmd.fd, &fput_needed);
                 if (!f) {
                         ret = -EBADF;
                         goto err_tree_mutex_unlock;
                 }
 
                 inode = f->f_dentry->d_inode;
-                if (!inode) {
-                        ret = -EBADF;
-                        goto err_tree_mutex_unlock;
-                }
-
                 xrcd = find_xrcd(file->device, inode);
                 if (!xrcd && !(cmd.oflags & O_CREAT)) {
                         /* no file descriptor. Need CREATE flag */
@@ -801,7 +796,7 @@ ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file,
         }
 
         if (f)
-                fput(f);
+                fput_light(f, fput_needed);
 
         mutex_lock(&file->mutex);
         list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list);
@@ -831,7 +826,7 @@ err:
 
 err_tree_mutex_unlock:
         if (f)
-                fput(f);
+                fput_light(f, fput_needed);
 
         mutex_unlock(&file->device->xrcd_tree_mutex);
 
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 604556d73d25..acf75c2cf7ef 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -542,8 +542,9 @@ struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd)
 {
         struct ib_uverbs_event_file *ev_file = NULL;
         struct file *filp;
+        int fput_needed;
 
-        filp = fget(fd);
+        filp = fget_light(fd, &fput_needed);
         if (!filp)
                 return NULL;
 
@@ -559,7 +560,7 @@ struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd)
         kref_get(&ev_file->ref);
 
 out:
-        fput(filp);
+        fput_light(filp, fput_needed);
         return ev_file;
 }