quick-read: Discard cache for fallocate, zerofill and discard ops

The fallocate, zerofill and discard modify file data on the server thus
rendering stale any cache held by the xlator on the client.

BUG: 1524252
Change-Id: I432146c6390a0cd5869420c373f598da43915f3f
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>

1 files changed, 39 insertions, 1 deletions

diff --git a/xlators/performance/quick-read/src/quick-read.c b/xlators/performance/quick-read/src/quick-read.c
index 5afc7ec74ad..e4f0885de2c 100644
--- a/xlators/performance/quick-read/src/quick-read.c
+++ b/xlators/performance/quick-read/src/quick-read.c
@@ -668,6 +668,41 @@ qr_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
 	return 0;
 }
 
+static int
+qr_fallocate (call_frame_t *frame, xlator_t *this, fd_t *fd, int keep_size,
+              off_t offset, size_t len, dict_t *xdata)
+{
+        qr_inode_prune (this, fd->inode);
+
+        STACK_WIND (frame, default_fallocate_cbk,
+                    FIRST_CHILD (this), FIRST_CHILD (this)->fops->fallocate,
+                    fd, keep_size, offset, len, xdata);
+        return 0;
+}
+
+static int
+qr_discard (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
+              size_t len, dict_t *xdata)
+{
+        qr_inode_prune (this, fd->inode);
+
+        STACK_WIND (frame, default_discard_cbk,
+                    FIRST_CHILD (this), FIRST_CHILD (this)->fops->discard,
+                    fd, offset, len, xdata);
+        return 0;
+}
+
+static int
+qr_zerofill (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
+              off_t len, dict_t *xdata)
+{
+        qr_inode_prune (this, fd->inode);
+
+        STACK_WIND (frame, default_zerofill_cbk,
+                    FIRST_CHILD (this), FIRST_CHILD (this)->fops->zerofill,
+                    fd, offset, len, xdata);
+        return 0;
+}
 
 int
 qr_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int flags,
@@ -1128,7 +1163,10 @@ struct xlator_fops fops = {
         .readv       = qr_readv,
 	.writev      = qr_writev,
 	.truncate    = qr_truncate,
-	.ftruncate   = qr_ftruncate
+        .ftruncate   = qr_ftruncate,
+        .fallocate   = qr_fallocate,
+        .discard     = qr_discard,
+        .zerofill    = qr_zerofill
 };
 
 struct xlator_cbks cbks = {