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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-06-17 16:02:44 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-07-10 23:40:27 -0400 |
| commit | 3bec63db55463365110d00721ed60a31e4614cb6 (patch) | |
| tree | ad0fed8f7e83258c7fcf59ca8433f02232e05cac /fs | |
| parent | edc05fc1c24ba49dae585da1b2a22686f0b221f0 (diff) | |
| download | linux-3.10-3bec63db55463365110d00721ed60a31e4614cb6.tar.gz linux-3.10-3bec63db55463365110d00721ed60a31e4614cb6.tar.bz2 linux-3.10-3bec63db55463365110d00721ed60a31e4614cb6.zip | |
NFS: Convert struct nfs_open_context to use a kref
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/inode.c | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index e7d2bba900b..01fc8ab0c56 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -461,7 +461,6 @@ static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, str ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); if (ctx != NULL) { - atomic_set(&ctx->count, 1); ctx->path.dentry = dget(dentry); ctx->path.mnt = mntget(mnt); ctx->cred = get_rpccred(cred); @@ -469,6 +468,7 @@ static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, str ctx->lockowner = current->files; ctx->error = 0; ctx->dir_cookie = 0; + kref_init(&ctx->kref); } return ctx; } @@ -476,27 +476,33 @@ static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, str struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx) { if (ctx != NULL) - atomic_inc(&ctx->count); + kref_get(&ctx->kref); return ctx; } -void put_nfs_open_context(struct nfs_open_context *ctx) +static void nfs_free_open_context(struct kref *kref) { - if (atomic_dec_and_test(&ctx->count)) { - if (!list_empty(&ctx->list)) { - struct inode *inode = ctx->path.dentry->d_inode; - spin_lock(&inode->i_lock); - list_del(&ctx->list); - spin_unlock(&inode->i_lock); - } - if (ctx->state != NULL) - nfs4_close_state(&ctx->path, ctx->state, ctx->mode); - if (ctx->cred != NULL) - put_rpccred(ctx->cred); - dput(ctx->path.dentry); - mntput(ctx->path.mnt); - kfree(ctx); + struct nfs_open_context *ctx = container_of(kref, + struct nfs_open_context, kref); + + if (!list_empty(&ctx->list)) { + struct inode *inode = ctx->path.dentry->d_inode; + spin_lock(&inode->i_lock); + list_del(&ctx->list); + spin_unlock(&inode->i_lock); } + if (ctx->state != NULL) + nfs4_close_state(&ctx->path, ctx->state, ctx->mode); + if (ctx->cred != NULL) + put_rpccred(ctx->cred); + dput(ctx->path.dentry); + mntput(ctx->path.mnt); + kfree(ctx); +} + +void put_nfs_open_context(struct nfs_open_context *ctx) +{ + kref_put(&ctx->kref, nfs_free_open_context); } /* |