Merge tag 'gfs2-4.7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2...

[platform/kernel/linux-exynos.git] / fs / gfs2 / file.c

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index e53b723..e0f98e4 100644 (file)
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -160,7 +160,7 @@ static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
        gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
        error = gfs2_glock_nq(&gh);
        if (error)
-               return error;
+               goto out_uninit;
 
        fsflags = fsflags_cvt(gfs2_to_fsflags, ip->i_diskflags);
        if (!S_ISDIR(inode->i_mode) && ip->i_diskflags & GFS2_DIF_JDATA)
@@ -169,6 +169,7 @@ static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
                error = -EFAULT;
 
        gfs2_glock_dq(&gh);
+out_uninit:
        gfs2_holder_uninit(&gh);
        return error;
 }
@@ -953,6 +954,30 @@ out_uninit:
        return ret;
 }
 
+static ssize_t gfs2_file_splice_read(struct file *in, loff_t *ppos,
+                                    struct pipe_inode_info *pipe, size_t len,
+                                    unsigned int flags)
+{
+       struct inode *inode = in->f_mapping->host;
+       struct gfs2_inode *ip = GFS2_I(inode);
+       struct gfs2_holder gh;
+       int ret;
+
+       inode_lock(inode);
+
+       ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
+       if (ret) {
+               inode_unlock(inode);
+               return ret;
+       }
+
+       gfs2_glock_dq_uninit(&gh);
+       inode_unlock(inode);
+
+       return generic_file_splice_read(in, ppos, pipe, len, flags);
+}
+
+
 static ssize_t gfs2_file_splice_write(struct pipe_inode_info *pipe,
                                      struct file *out, loff_t *ppos,
                                      size_t len, unsigned int flags)
@@ -1115,7 +1140,7 @@ const struct file_operations gfs2_file_fops = {
        .fsync          = gfs2_fsync,
        .lock           = gfs2_lock,
        .flock          = gfs2_flock,
-       .splice_read    = generic_file_splice_read,
+       .splice_read    = gfs2_file_splice_read,
        .splice_write   = gfs2_file_splice_write,
        .setlease       = simple_nosetlease,
        .fallocate      = gfs2_fallocate,
@@ -1143,7 +1168,7 @@ const struct file_operations gfs2_file_fops_nolock = {
        .open           = gfs2_open,
        .release        = gfs2_release,
        .fsync          = gfs2_fsync,
-       .splice_read    = generic_file_splice_read,
+       .splice_read    = gfs2_file_splice_read,
        .splice_write   = gfs2_file_splice_write,
        .setlease       = generic_setlease,
        .fallocate      = gfs2_fallocate,