diff options
| author | NeilBrown <neilb@suse.com> | 2016-10-13 07:26:47 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-12-02 01:57:07 +0300 |
| commit | b184b5c38e4640585126e44ef84f2dbdd0d23d5a (patch) | |
| tree | 25de3c489b02736f94b4625797bd7850bdc3947f | |
| parent | 4d3b55d3c7c8c628498fefac4779fc02de5af492 (diff) | |
| download | linux-b184b5c38e4640585126e44ef84f2dbdd0d23d5a.tar.xz | |
NFS: remove l_pid field from nfs_lockowner
this field is not used in any important way and probably should
have been removed by
Commit: 8003d3c4aaa5 ("nfs4: treat lock owners as opaque values")
which removed the pid argument from nfs4_get_lock_state.
Except in unusual and uninteresting cases, two threads with the same
->tgid will have the same ->files pointer, so keeping them both
for comparison brings no benefit.
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| -rw-r--r-- | fs/nfs/inode.c | 3 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 1 | ||||
| -rw-r--r-- | fs/nfs/pagelist.c | 3 | ||||
| -rw-r--r-- | fs/nfs/write.c | 3 | ||||
| -rw-r--r-- | include/linux/nfs_fs.h | 1 |
5 files changed, 2 insertions, 9 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 3575e3408bd7..fd9913249713 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -703,7 +703,6 @@ static void nfs_init_lock_context(struct nfs_lock_context *l_ctx) { atomic_set(&l_ctx->count, 1); l_ctx->lockowner.l_owner = current->files; - l_ctx->lockowner.l_pid = current->tgid; INIT_LIST_HEAD(&l_ctx->list); atomic_set(&l_ctx->io_count, 0); } @@ -716,8 +715,6 @@ static struct nfs_lock_context *__nfs_find_lock_context(struct nfs_open_context do { if (pos->lockowner.l_owner != current->files) continue; - if (pos->lockowner.l_pid != current->tgid) - continue; atomic_inc(&pos->count); return pos; } while ((pos = list_entry(pos->list.next, typeof(*pos), list)) != head); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 5593b088c561..0d108f13ef16 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2947,7 +2947,6 @@ static int _nfs4_do_setattr(struct inode *inode, } else if (truncate && state != NULL) { struct nfs_lockowner lockowner = { .l_owner = current->files, - .l_pid = current->tgid, }; if (!nfs4_valid_open_stateid(state)) return -EBADF; diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 965db474f4b0..161f8b13bbaa 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -867,8 +867,7 @@ static void nfs_pageio_cleanup_mirroring(struct nfs_pageio_descriptor *pgio) static bool nfs_match_lock_context(const struct nfs_lock_context *l1, const struct nfs_lock_context *l2) { - return l1->lockowner.l_owner == l2->lockowner.l_owner - && l1->lockowner.l_pid == l2->lockowner.l_pid; + return l1->lockowner.l_owner == l2->lockowner.l_owner; } /** diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 53211838f72a..4d5897e6d6cb 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1151,8 +1151,7 @@ int nfs_flush_incompatible(struct file *file, struct page *page) if (l_ctx && flctx && !(list_empty_careful(&flctx->flc_posix) && list_empty_careful(&flctx->flc_flock))) { - do_flush |= l_ctx->lockowner.l_owner != current->files - || l_ctx->lockowner.l_pid != current->tgid; + do_flush |= l_ctx->lockowner.l_owner != current->files; } nfs_release_request(req); if (!do_flush) diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 810124b33327..bf8a713c45b4 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -57,7 +57,6 @@ struct nfs_access_entry { struct nfs_lockowner { fl_owner_t l_owner; - pid_t l_pid; }; struct nfs_lock_context { |