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| author | Bryan Schumaker <bjschuma@netapp.com> | 2010-09-29 21:41:49 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-10-08 00:48:49 +0200 |
| commit | 955a857e062642cd3ebe1dc7bb38c0f85d8f8f17 (patch) | |
| tree | f95fc349c245c4a0a3f6f8fcc5bf02f36a756134 /fs/nfs/inode.c | |
| parent | NFS: We must use list_for_each_entry_safe in nfs_access_cache_shrinker (diff) | |
| download | linux-955a857e062642cd3ebe1dc7bb38c0f85d8f8f17.tar.xz linux-955a857e062642cd3ebe1dc7bb38c0f85d8f8f17.zip | |
NFS: new idmapper
This patch creates a new idmapper system that uses the request-key function to
place a call into userspace to map user and group ids to names. The old
idmapper was single threaded, which prevented more than one request from running
at a single time. This means that a user would have to wait for an upcall to
finish before accessing a cached result.
The upcall result is stored on a keyring of type id_resolver. See the file
Documentation/filesystems/nfs/idmapper.txt for instructions.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
[Trond: fix up the return value of nfs_idmap_lookup_name and clean up code]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/inode.c')
| -rw-r--r-- | fs/nfs/inode.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 18be041abd23..f2d2c801e0af 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1526,6 +1526,10 @@ static int __init init_nfs_fs(void) { int err; + err = nfs_idmap_init(); + if (err < 0) + goto out9; + err = nfs_dns_resolver_init(); if (err < 0) goto out8; @@ -1590,6 +1594,8 @@ out6: out7: nfs_dns_resolver_destroy(); out8: + nfs_idmap_quit(); +out9: return err; } @@ -1602,6 +1608,7 @@ static void __exit exit_nfs_fs(void) nfs_destroy_nfspagecache(); nfs_fscache_unregister(); nfs_dns_resolver_destroy(); + nfs_idmap_quit(); #ifdef CONFIG_PROC_FS rpc_proc_unregister("nfs"); #endif |