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 /libglusterfs/src/defaults.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 'libglusterfs/src/defaults.h')
| -rw-r--r-- | libglusterfs/src/defaults.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libglusterfs/src/defaults.h b/libglusterfs/src/defaults.h index bc2f6429b09..f3cbb3a4bb7 100644 --- a/libglusterfs/src/defaults.h +++ b/libglusterfs/src/defaults.h @@ -249,6 +249,12 @@ int32_t default_fallocate(call_frame_t *frame, int32_t keep_size, off_t offset, size_t len, dict_t *xdata); +int32_t default_discard(call_frame_t *frame, + xlator_t *this, + fd_t *fd, + off_t offset, + size_t len, dict_t *xdata); + /* Resume */ int32_t default_getspec_resume (call_frame_t *frame, xlator_t *this, @@ -465,6 +471,11 @@ int32_t default_fallocate_resume(call_frame_t *frame, int32_t keep_size, off_t offset, size_t len, dict_t *xdata); +int32_t default_discard_resume(call_frame_t *frame, + xlator_t *this, + fd_t *fd, + off_t offset, + size_t len, dict_t *xdata); /* _cbk */ @@ -680,6 +691,9 @@ int32_t default_fallocate_cbk(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *pre, struct iatt *post, dict_t *xdata); +int32_t default_discard_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, struct iatt *pre, + struct iatt *post, dict_t *xdata); int32_t default_getspec_cbk (call_frame_t *frame, void *cookie, xlator_t *this, |