diff options
| author | Frank van der Linden <fllinden@amazon.com> | 2020-06-24 01:38:57 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2020-07-14 00:52:45 +0300 |
| commit | d2ae4f8b21c111bb795c557588d89dccd005828d (patch) | |
| tree | 935109b6876bfbb675a4e8ddc0b0959ea0338eca /fs/nfs | |
| parent | 3e1f02123fba086d32dfd5729e6f4e2b54654acc (diff) | |
| download | linux-d2ae4f8b21c111bb795c557588d89dccd005828d.tar.xz | |
nfs: define nfs_access_get_cached function
The only consumer of nfs_access_get_cached_rcu and nfs_access_cached
calls these static functions in order to first try RCU access, and
then locked access.
Combine them in to a single function, and call that. Make this function
available to the rest of the NFS code.
Signed-off-by: Frank van der Linden <fllinden@amazon.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/dir.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 5a331da5f55a..f04fc0f7843b 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2460,7 +2460,7 @@ static struct nfs_access_entry *nfs_access_search_rbtree(struct inode *inode, co return NULL; } -static int nfs_access_get_cached(struct inode *inode, const struct cred *cred, struct nfs_access_entry *res, bool may_block) +static int nfs_access_get_cached_locked(struct inode *inode, const struct cred *cred, struct nfs_access_entry *res, bool may_block) { struct nfs_inode *nfsi = NFS_I(inode); struct nfs_access_entry *cache; @@ -2533,6 +2533,20 @@ out: return err; } +int nfs_access_get_cached(struct inode *inode, const struct cred *cred, struct +nfs_access_entry *res, bool may_block) +{ + int status; + + status = nfs_access_get_cached_rcu(inode, cred, res); + if (status != 0) + status = nfs_access_get_cached_locked(inode, cred, res, + may_block); + + return status; +} +EXPORT_SYMBOL_GPL(nfs_access_get_cached); + static void nfs_access_add_rbtree(struct inode *inode, struct nfs_access_entry *set) { struct nfs_inode *nfsi = NFS_I(inode); @@ -2647,9 +2661,7 @@ static int nfs_do_access(struct inode *inode, const struct cred *cred, int mask) trace_nfs_access_enter(inode); - status = nfs_access_get_cached_rcu(inode, cred, &cache); - if (status != 0) - status = nfs_access_get_cached(inode, cred, &cache, may_block); + status = nfs_access_get_cached(inode, cred, &cache, may_block); if (status == 0) goto out_cached; |