diff options
Diffstat (limited to 'fs/ceph/caps.c')
| -rw-r--r-- | fs/ceph/caps.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 4037b389a7e9..edb407f38b40 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2479,6 +2479,27 @@ static void check_max_size(struct inode *inode, loff_t endoff) ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); } +int ceph_try_get_caps(struct ceph_inode_info *ci, int need, int want, int *got) +{ + int ret, err = 0; + + BUG_ON(need & ~CEPH_CAP_FILE_RD); + BUG_ON(want & ~(CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)); + ret = ceph_pool_perm_check(ci, need); + if (ret < 0) + return ret; + + ret = try_get_cap_refs(ci, need, want, 0, true, got, &err); + if (ret) { + if (err == -EAGAIN) { + ret = 0; + } else if (err < 0) { + ret = err; + } + } + return ret; +} + /* * Wait for caps, and take cap references. If we can't get a WR cap * due to a small max_size, make sure we check_max_size (and possibly |