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authorSage Weil <sage@newdream.net>2010-05-26 14:31:27 -0700
committerSage Weil <sage@newdream.net>2010-08-01 20:11:39 -0700
commit33caad324b88f75f42d836735d86feaafb3b40cf (patch)
tree57e50ce5bdc181ea296191784c4d57999c51207e /fs/ceph/caps.c
parent8c6e9229fc1989cf263a6fcd4ff406d7f473f966 (diff)
ceph: perform lazy writes when file mode and caps permit
If we have marked a file as "lazy" (using the ceph ioctl), perform buffered writes when the MDS caps allow it. Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/caps.c')
-rw-r--r--fs/ceph/caps.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index b81be9a56487..1a70a3ebf013 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -337,8 +337,7 @@ static struct ceph_cap *__get_cap_for_mds(struct ceph_inode_info *ci, int mds)
}
/*
- * Return id of any MDS with a cap, preferably FILE_WR|WRBUFFER|EXCL, else
- * -1.
+ * Return id of any MDS with a cap, preferably FILE_WR|BUFFER|EXCL, else -1.
*/
static int __ceph_get_cap_mds(struct ceph_inode_info *ci, u32 *mseq)
{
@@ -346,7 +345,7 @@ static int __ceph_get_cap_mds(struct ceph_inode_info *ci, u32 *mseq)
int mds = -1;
struct rb_node *p;
- /* prefer mds with WR|WRBUFFER|EXCL caps */
+ /* prefer mds with WR|BUFFER|EXCL caps */
for (p = rb_first(&ci->i_caps); p; p = rb_next(p)) {
cap = rb_entry(p, struct ceph_cap, ci_node);
mds = cap->mds;
@@ -831,7 +830,7 @@ int __ceph_caps_file_wanted(struct ceph_inode_info *ci)
{
int want = 0;
int mode;
- for (mode = 0; mode < 4; mode++)
+ for (mode = 0; mode < CEPH_FILE_MODE_NUM; mode++)
if (ci->i_nr_by_mode[mode])
want |= ceph_caps_for_mode(mode);
return want;