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| author | Mike Snitzer <[email protected]> | 2024-09-05 19:09:44 +0000 |
|---|---|---|
| committer | Anna Schumaker <[email protected]> | 2024-09-23 19:03:30 +0000 |
| commit | 47e988147f409f70e0f01a5e6dc5940375e02343 (patch) | |
| tree | b164422c4d8f3cfe7aeaadeaefe1880a86a04f71 /rust/helpers/helpers.c | |
| parent | nfsd: add nfsd_file_acquire_local() (diff) | |
| download | kernel-47e988147f409f70e0f01a5e6dc5940375e02343.tar.gz kernel-47e988147f409f70e0f01a5e6dc5940375e02343.zip | |
nfsd: add nfsd_serv_try_get and nfsd_serv_put
Introduce nfsd_serv_try_get and nfsd_serv_put and update the nfsd code
to prevent nfsd_destroy_serv from destroying nn->nfsd_serv until any
caller of nfsd_serv_try_get releases their reference using nfsd_serv_put.
A percpu_ref is used to implement the interlock between
nfsd_destroy_serv and any caller of nfsd_serv_try_get.
This interlock is needed to properly wait for the completion of client
initiated localio calls to nfsd (that are _not_ in the context of nfsd).
Signed-off-by: Mike Snitzer <[email protected]>
Reviewed-by: Chuck Lever <[email protected]>
Reviewed-by: Jeff Layton <[email protected]>
Reviewed-by: NeilBrown <[email protected]>
Signed-off-by: Anna Schumaker <[email protected]>
Diffstat (limited to 'rust/helpers/helpers.c')
0 files changed, 0 insertions, 0 deletions