From 17f287172413dc04244781aa5302a0e4f10e2777 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Thu, 23 May 2013 12:19:42 -0400 Subject: glusterfs: discard (hole punch) support Add support for the DISCARD file operation. Discard punches a hole in a file in the provided range. Block de-allocation is implemented via fallocate() (as requested via fuse and passed on to the brick fs) but a separate fop is created within gluster to emphasize the fact that discard changes file data (the discarded region is replaced with zeroes) and must invalidate caches where appropriate. BUG: 963678 Change-Id: I34633a0bfff2187afeab4292a15f3cc9adf261af Signed-off-by: Brian Foster Reviewed-on: http://review.gluster.org/5090 Tested-by: Gluster Build System Reviewed-by: Anand Avati --- api/src/glfs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'api/src/glfs.h') diff --git a/api/src/glfs.h b/api/src/glfs.h index 3888a103eb9..700e10f17c9 100644 --- a/api/src/glfs.h +++ b/api/src/glfs.h @@ -450,6 +450,8 @@ int glfs_fremovexattr (glfs_fd_t *fd, const char *name); int glfs_fallocate(glfs_fd_t *fd, int keep_size, off_t offset, size_t len); +int glfs_discard(glfs_fd_t *fd, off_t offset, size_t len); + char *glfs_getcwd (glfs_t *fs, char *buf, size_t size); int glfs_chdir (glfs_t *fs, const char *path); -- cgit