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Merge branch 'flock' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl

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* 'flock' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:
  locks: turn lock_flocks into a spinlock
  fasync: re-organize fasync entry insertion to allow it under a spinlock
  locks/nfsd: allocate file lock outside of spinlock
  lockd: fix nlmsvc_notify_blocked locking
  lockd: push lock_flocks down
This commit is contained in:
Linus Torvalds 2010-10-27 18:13:34 -07:00
commit 7420a8c0de
10 changed files with 114 additions and 70 deletions
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1
fs/nfsd/Kconfig
View file

@ -2,7 +2,6 @@ config NFSD
tristate "NFS server support"
depends on INET
depends on FILE_LOCKING
depends on BKL # fix as soon as lockd is done
select LOCKD
select SUNRPC
select EXPORTFS

26
fs/nfsd/nfs4state.c
View file

@ -2614,7 +2614,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
struct nfs4_delegation *dp;
struct nfs4_stateowner *sop = stp->st_stateowner;
int cb_up = atomic_read(&sop->so_client->cl_cb_set);
struct file_lock fl, *flp = &fl;
struct file_lock *fl;
int status, flag = 0;
flag = NFS4_OPEN_DELEGATE_NONE;
@ -2648,20 +2648,24 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
flag = NFS4_OPEN_DELEGATE_NONE;
goto out;
}
locks_init_lock(&fl);
fl.fl_lmops = &nfsd_lease_mng_ops;
fl.fl_flags = FL_LEASE;
fl.fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
fl.fl_end = OFFSET_MAX;
fl.fl_owner = (fl_owner_t)dp;
fl.fl_file = find_readable_file(stp->st_file);
BUG_ON(!fl.fl_file);
fl.fl_pid = current->tgid;
status = -ENOMEM;
fl = locks_alloc_lock();
if (!fl)
goto out;
locks_init_lock(fl);
fl->fl_lmops = &nfsd_lease_mng_ops;
fl->fl_flags = FL_LEASE;
fl->fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
fl->fl_end = OFFSET_MAX;
fl->fl_owner = (fl_owner_t)dp;
fl->fl_file = find_readable_file(stp->st_file);
BUG_ON(!fl->fl_file);
fl->fl_pid = current->tgid;
/* vfs_setlease checks to see if delegation should be handed out.
* the lock_manager callbacks fl_mylease and fl_change are used
*/
if ((status = vfs_setlease(fl.fl_file, fl.fl_type, &flp))) {
if ((status = vfs_setlease(fl->fl_file, fl->fl_type, &fl))) {
dprintk("NFSD: setlease failed [%d], no delegation\n", status);
unhash_delegation(dp);
flag = NFS4_OPEN_DELEGATE_NONE;