Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[sfrench/cifs-2.6.git] / ipc / shm.c

diff --git a/ipc/shm.c b/ipc/shm.c
index 5e2cbfdab6fc0d6b96a19c321a9208dda8cd130d..41c1285d697a6f19a3c9b945691346c9b45ade47 100644 (file)
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -393,6 +393,16 @@ static int shm_fsync(struct file *file, loff_t start, loff_t end, int datasync)
        return sfd->file->f_op->fsync(sfd->file, start, end, datasync);
 }
 
+static long shm_fallocate(struct file *file, int mode, loff_t offset,
+                         loff_t len)
+{
+       struct shm_file_data *sfd = shm_file_data(file);
+
+       if (!sfd->file->f_op->fallocate)
+               return -EOPNOTSUPP;
+       return sfd->file->f_op->fallocate(file, mode, offset, len);
+}
+
 static unsigned long shm_get_unmapped_area(struct file *file,
        unsigned long addr, unsigned long len, unsigned long pgoff,
        unsigned long flags)
@@ -410,6 +420,7 @@ static const struct file_operations shm_file_operations = {
        .get_unmapped_area      = shm_get_unmapped_area,
 #endif
        .llseek         = noop_llseek,
+       .fallocate      = shm_fallocate,
 };
 
 static const struct file_operations shm_file_operations_huge = {
@@ -418,6 +429,7 @@ static const struct file_operations shm_file_operations_huge = {
        .release        = shm_release,
        .get_unmapped_area      = shm_get_unmapped_area,
        .llseek         = noop_llseek,
+       .fallocate      = shm_fallocate,
 };
 
 int is_file_shm_hugepages(struct file *file)