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/xlator.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/xlator.h')
| -rw-r--r-- | libglusterfs/src/xlator.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libglusterfs/src/xlator.h b/libglusterfs/src/xlator.h index ace73f2ed03..817eaddecfe 100644 --- a/libglusterfs/src/xlator.h +++ b/libglusterfs/src/xlator.h @@ -425,6 +425,14 @@ typedef int32_t (*fop_fallocate_cbk_t) (call_frame_t *frame, struct iatt *preop_stbuf, struct iatt *postop_stbuf, dict_t *xdata); +typedef int32_t (*fop_discard_cbk_t) (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + struct iatt *preop_stbuf, + struct iatt *postop_stbuf, dict_t *xdata); + typedef int32_t (*fop_lookup_t) (call_frame_t *frame, xlator_t *this, loc_t *loc, @@ -650,6 +658,13 @@ typedef int32_t (*fop_fallocate_t) (call_frame_t *frame, size_t len, dict_t *xdata); +typedef int32_t (*fop_discard_t) (call_frame_t *frame, + xlator_t *this, + fd_t *fd, + off_t offset, + size_t len, + dict_t *xdata); + struct xlator_fops { fop_lookup_t lookup; fop_stat_t stat; @@ -694,6 +709,7 @@ struct xlator_fops { fop_fsetattr_t fsetattr; fop_getspec_t getspec; fop_fallocate_t fallocate; + fop_discard_t discard; /* these entries are used for a typechecking hack in STACK_WIND _only_ */ fop_lookup_cbk_t lookup_cbk; @@ -739,6 +755,7 @@ struct xlator_fops { fop_fsetattr_cbk_t fsetattr_cbk; fop_getspec_cbk_t getspec_cbk; fop_fallocate_cbk_t fallocate_cbk; + fop_discard_cbk_t discard_cbk; }; typedef int32_t (*cbk_forget_t) (xlator_t *this, |