diff options
| author | Brian Foster <bfoster@redhat.com> | 2013-05-23 12:19:42 -0400 |
|---|---|---|
| committer | Anand Avati <avati@redhat.com> | 2013-06-13 14:37:43 -0700 |
| commit | 17f287172413dc04244781aa5302a0e4f10e2777 (patch) | |
| tree | 2acfc7097c92de32b19e82140befd8dc9fb2dad2 /api/src/glfs.h | |
| parent | d1ccc4e400728d90f2ef7904661f53deb7199123 (diff) | |
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 <bfoster@redhat.com>
Reviewed-on: http://review.gluster.org/5090
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'api/src/glfs.h')
| -rw-r--r-- | api/src/glfs.h | 2 |
1 files changed, 2 insertions, 0 deletions
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); |