xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ceph: do not confuse stale and dead (unreconnected) caps

Browse Source 
We were using the cap_gen to track both stale caps (caps that timed out
due to temporarily losing touch with the mds) and dead caps that did not
reconnect after an MDS failure.  Introduce a recon_gen counter to track
reconnections to restarted MDSs and kill dead caps based on that instead.

Rename gen to cap_gen while we're at it to make it more clear which is
which.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil
2009-11-09 12:05:48 -08:00
parent fb690390e3
commit 685f9a5d14
4 changed files with 26 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
fs/ceph/super.h
View File

@@ -169,7 +169,9 @@ struct ceph_cap {
int issued; /* latest, from the mds */
int implemented; /* implemented superset of issued (for revocation) */
int mds_wanted;
u32 seq, issue_seq, mseq, gen;
u32 seq, issue_seq, mseq;
u32 cap_gen; /* active/stale cycle */
u32 recon_gen; /* mds restart reconnect cycle */
unsigned long last_used;
struct list_head caps_item;
};