diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2022-10-28 10:46:51 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-11-28 12:54:45 -0500 |
| commit | 4d1ea8455716ca070e3cd85767e6f6a562a58b1b (patch) | |
| tree | a5fa7ecea46ed6691f33a9b43342c075bedfeaa5 /fs/nfsd/filecache.h | |
| parent | dcf3f80965ca787c70def402cdf1553c93c75529 (diff) | |
NFSD: Add an NFSD_FILE_GC flag to enable nfsd_file garbage collection
NFSv4 operations manage the lifetime of nfsd_file items they use by
means of NFSv4 OPEN and CLOSE. Hence there's no need for them to be
garbage collected.
Introduce a mechanism to enable garbage collection for nfsd_file
items used only by NFSv2/3 callers.
Note that the change in nfsd_file_put() ensures that both CLOSE and
DELEGRETURN will actually close out and free an nfsd_file on last
reference of a non-garbage-collected file.
Link: https://bugzilla.linux-nfs.org/show_bug.cgi?id=394
Suggested-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Diffstat (limited to 'fs/nfsd/filecache.h')
| -rw-r--r-- | fs/nfsd/filecache.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfsd/filecache.h b/fs/nfsd/filecache.h index 6b012ea4bd9d..b7efb2c3ddb1 100644 --- a/fs/nfsd/filecache.h +++ b/fs/nfsd/filecache.h @@ -38,6 +38,7 @@ struct nfsd_file { #define NFSD_FILE_HASHED (0) #define NFSD_FILE_PENDING (1) #define NFSD_FILE_REFERENCED (2) +#define NFSD_FILE_GC (3) unsigned long nf_flags; struct inode *nf_inode; /* don't deref */ refcount_t nf_ref; @@ -55,6 +56,8 @@ void nfsd_file_put(struct nfsd_file *nf); struct nfsd_file *nfsd_file_get(struct nfsd_file *nf); void nfsd_file_close_inode_sync(struct inode *inode); bool nfsd_file_is_cached(struct inode *inode); +__be32 nfsd_file_acquire_gc(struct svc_rqst *rqstp, struct svc_fh *fhp, + unsigned int may_flags, struct nfsd_file **nfp); __be32 nfsd_file_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp, unsigned int may_flags, struct nfsd_file **nfp); __be32 nfsd_file_create(struct svc_rqst *rqstp, struct svc_fh *fhp, |