diff options
| author | Xiubo Li <xiubli@redhat.com> | 2023-11-07 05:44:41 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-02 12:31:59 +0300 |
| commit | fb98248fc4a26e73d032e53160aee5d566d410cc (patch) | |
| tree | c8c1f95980050f0051c8434feb85fa59521ee6e8 /include/linux | |
| parent | 1d6de21f00293d819b5ca6dbe75ff1f3b6392140 (diff) | |
| download | linux-fb98248fc4a26e73d032e53160aee5d566d410cc.tar.xz | |
ceph: try to allocate a smaller extent map for sparse read
[ Upstream commit aaefabc4a5f7ae48682c4d2d5d10faaf95c08eb9 ]
In fscrypt case and for a smaller read length we can predict the
max count of the extent map. And for small read length use cases
this could save some memories.
[ idryomov: squash into a single patch to avoid build break, drop
redundant variable in ceph_alloc_sparse_ext_map() ]
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Stable-dep-of: 18d44c5d062b ("ceph: allocate sparse_ext map only for sparse reads")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ceph/osd_client.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index f703fb8030de..50e409e84466 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -573,9 +573,12 @@ int __ceph_alloc_sparse_ext_map(struct ceph_osd_req_op *op, int cnt); */ #define CEPH_SPARSE_EXT_ARRAY_INITIAL 16 -static inline int ceph_alloc_sparse_ext_map(struct ceph_osd_req_op *op) +static inline int ceph_alloc_sparse_ext_map(struct ceph_osd_req_op *op, int cnt) { - return __ceph_alloc_sparse_ext_map(op, CEPH_SPARSE_EXT_ARRAY_INITIAL); + if (!cnt) + cnt = CEPH_SPARSE_EXT_ARRAY_INITIAL; + + return __ceph_alloc_sparse_ext_map(op, cnt); } extern void ceph_osdc_get_request(struct ceph_osd_request *req); |