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[68.40.189.247]) by smtp.gmail.com with ESMTPSA id n22sm10317844iob.37.2019.08.18.11.21.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 18 Aug 2019 11:21:23 -0700 (PDT) From: Trond Myklebust X-Google-Original-From: Trond Myklebust To: "J. Bruce Fields" Cc: linux-nfs@vger.kernel.org Subject: [PATCH v2 10/16] nfsd: convert fi_deleg_file and ls_file fields to nfsd_file Date: Sun, 18 Aug 2019 14:18:53 -0400 Message-Id: <20190818181859.8458-11-trond.myklebust@hammerspace.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190818181859.8458-10-trond.myklebust@hammerspace.com> References: <20190818181859.8458-1-trond.myklebust@hammerspace.com> <20190818181859.8458-2-trond.myklebust@hammerspace.com> <20190818181859.8458-3-trond.myklebust@hammerspace.com> <20190818181859.8458-4-trond.myklebust@hammerspace.com> <20190818181859.8458-5-trond.myklebust@hammerspace.com> <20190818181859.8458-6-trond.myklebust@hammerspace.com> <20190818181859.8458-7-trond.myklebust@hammerspace.com> <20190818181859.8458-8-trond.myklebust@hammerspace.com> <20190818181859.8458-9-trond.myklebust@hammerspace.com> <20190818181859.8458-10-trond.myklebust@hammerspace.com> MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jeff Layton Have them keep an nfsd_file reference instead of a struct file. Signed-off-by: Jeff Layton Signed-off-by: Trond Myklebust Signed-off-by: Trond Myklebust --- fs/nfsd/blocklayout.c | 3 +- fs/nfsd/nfs4layouts.c | 12 ++-- fs/nfsd/nfs4state.c | 140 +++++++++++++++++++++--------------------- fs/nfsd/state.h | 6 +- 4 files changed, 82 insertions(+), 79 deletions(-) diff --git a/fs/nfsd/blocklayout.c b/fs/nfsd/blocklayout.c index 66d4c55eb48e..9bbaa671c079 100644 --- a/fs/nfsd/blocklayout.c +++ b/fs/nfsd/blocklayout.c @@ -15,6 +15,7 @@ #include "blocklayoutxdr.h" #include "pnfs.h" +#include "filecache.h" #define NFSDDBG_FACILITY NFSDDBG_PNFS @@ -404,7 +405,7 @@ static void nfsd4_scsi_fence_client(struct nfs4_layout_stateid *ls) { struct nfs4_client *clp = ls->ls_stid.sc_client; - struct block_device *bdev = ls->ls_file->f_path.mnt->mnt_sb->s_bdev; + struct block_device *bdev = ls->ls_file->nf_file->f_path.mnt->mnt_sb->s_bdev; bdev->bd_disk->fops->pr_ops->pr_preempt(bdev, NFSD_MDS_PR_KEY, nfsd4_scsi_pr_key(clp), 0, true); diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c index a79e24b79095..2681c70283ce 100644 --- a/fs/nfsd/nfs4layouts.c +++ b/fs/nfsd/nfs4layouts.c @@ -169,8 +169,8 @@ nfsd4_free_layout_stateid(struct nfs4_stid *stid) spin_unlock(&fp->fi_lock); if (!nfsd4_layout_ops[ls->ls_layout_type]->disable_recalls) - vfs_setlease(ls->ls_file, F_UNLCK, NULL, (void **)&ls); - fput(ls->ls_file); + vfs_setlease(ls->ls_file->nf_file, F_UNLCK, NULL, (void **)&ls); + nfsd_file_put(ls->ls_file); if (ls->ls_recalled) atomic_dec(&ls->ls_stid.sc_file->fi_lo_recalls); @@ -197,7 +197,7 @@ nfsd4_layout_setlease(struct nfs4_layout_stateid *ls) fl->fl_end = OFFSET_MAX; fl->fl_owner = ls; fl->fl_pid = current->tgid; - fl->fl_file = ls->ls_file; + fl->fl_file = ls->ls_file->nf_file; status = vfs_setlease(fl->fl_file, fl->fl_type, &fl, NULL); if (status) { @@ -236,13 +236,13 @@ nfsd4_alloc_layout_stateid(struct nfsd4_compound_state *cstate, NFSPROC4_CLNT_CB_LAYOUT); if (parent->sc_type == NFS4_DELEG_STID) - ls->ls_file = get_file(fp->fi_deleg_file); + ls->ls_file = nfsd_file_get(fp->fi_deleg_file); else ls->ls_file = find_any_file(fp); BUG_ON(!ls->ls_file); if (nfsd4_layout_setlease(ls)) { - fput(ls->ls_file); + nfsd_file_put(ls->ls_file); put_nfs4_file(fp); kmem_cache_free(nfs4_layout_stateid_cache, ls); return NULL; @@ -626,7 +626,7 @@ nfsd4_cb_layout_fail(struct nfs4_layout_stateid *ls) argv[0] = (char *)nfsd_recall_failed; argv[1] = addr_str; - argv[2] = ls->ls_file->f_path.mnt->mnt_sb->s_id; + argv[2] = ls->ls_file->nf_file->f_path.mnt->mnt_sb->s_id; argv[3] = NULL; error = call_usermodehelper(nfsd_recall_failed, argv, envp, diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 3742a2a7b4da..abcd3415dad0 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -430,18 +430,18 @@ put_nfs4_file(struct nfs4_file *fi) } } -static struct file * +static struct nfsd_file * __nfs4_get_fd(struct nfs4_file *f, int oflag) { if (f->fi_fds[oflag]) - return get_file(f->fi_fds[oflag]->nf_file); + return nfsd_file_get(f->fi_fds[oflag]); return NULL; } -static struct file * +static struct nfsd_file * find_writeable_file_locked(struct nfs4_file *f) { - struct file *ret; + struct nfsd_file *ret; lockdep_assert_held(&f->fi_lock); @@ -451,10 +451,10 @@ find_writeable_file_locked(struct nfs4_file *f) return ret; } -static struct file * +static struct nfsd_file * find_writeable_file(struct nfs4_file *f) { - struct file *ret; + struct nfsd_file *ret; spin_lock(&f->fi_lock); ret = find_writeable_file_locked(f); @@ -463,9 +463,10 @@ find_writeable_file(struct nfs4_file *f) return ret; } -static struct file *find_readable_file_locked(struct nfs4_file *f) +static struct nfsd_file * +find_readable_file_locked(struct nfs4_file *f) { - struct file *ret; + struct nfsd_file *ret; lockdep_assert_held(&f->fi_lock); @@ -475,10 +476,10 @@ static struct file *find_readable_file_locked(struct nfs4_file *f) return ret; } -static struct file * +static struct nfsd_file * find_readable_file(struct nfs4_file *f) { - struct file *ret; + struct nfsd_file *ret; spin_lock(&f->fi_lock); ret = find_readable_file_locked(f); @@ -487,10 +488,10 @@ find_readable_file(struct nfs4_file *f) return ret; } -struct file * +struct nfsd_file * find_any_file(struct nfs4_file *f) { - struct file *ret; + struct nfsd_file *ret; spin_lock(&f->fi_lock); ret = __nfs4_get_fd(f, O_RDWR); @@ -934,25 +935,25 @@ nfs4_inc_and_copy_stateid(stateid_t *dst, struct nfs4_stid *stid) static void put_deleg_file(struct nfs4_file *fp) { - struct file *filp = NULL; + struct nfsd_file *nf = NULL; spin_lock(&fp->fi_lock); if (--fp->fi_delegees == 0) - swap(filp, fp->fi_deleg_file); + swap(nf, fp->fi_deleg_file); spin_unlock(&fp->fi_lock); - if (filp) - fput(filp); + if (nf) + nfsd_file_put(nf); } static void nfs4_unlock_deleg_lease(struct nfs4_delegation *dp) { struct nfs4_file *fp = dp->dl_stid.sc_file; - struct file *filp = fp->fi_deleg_file; + struct nfsd_file *nf = fp->fi_deleg_file; WARN_ON_ONCE(!fp->fi_delegees); - vfs_setlease(filp, F_UNLCK, NULL, (void **)&dp); + vfs_setlease(nf->nf_file, F_UNLCK, NULL, (void **)&dp); put_deleg_file(fp); } @@ -1290,11 +1291,14 @@ static void nfs4_free_lock_stateid(struct nfs4_stid *stid) { struct nfs4_ol_stateid *stp = openlockstateid(stid); struct nfs4_lockowner *lo = lockowner(stp->st_stateowner); - struct file *file; + struct nfsd_file *nf; - file = find_any_file(stp->st_stid.sc_file); - if (file) - filp_close(file, (fl_owner_t)lo); + nf = find_any_file(stp->st_stid.sc_file); + if (nf) { + get_file(nf->nf_file); + filp_close(nf->nf_file, (fl_owner_t)lo); + nfsd_file_put(nf); + } nfs4_free_ol_stateid(stid); } @@ -4768,7 +4772,7 @@ static struct file_lock *nfs4_alloc_init_lease(struct nfs4_delegation *dp, fl->fl_end = OFFSET_MAX; fl->fl_owner = (fl_owner_t)dp; fl->fl_pid = current->tgid; - fl->fl_file = dp->dl_stid.sc_file->fi_deleg_file; + fl->fl_file = dp->dl_stid.sc_file->fi_deleg_file->nf_file; return fl; } @@ -4778,7 +4782,7 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh, { int status = 0; struct nfs4_delegation *dp; - struct file *filp; + struct nfsd_file *nf; struct file_lock *fl; /* @@ -4789,8 +4793,8 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh, if (fp->fi_had_conflict) return ERR_PTR(-EAGAIN); - filp = find_readable_file(fp); - if (!filp) { + nf = find_readable_file(fp); + if (!nf) { /* We should always have a readable file here */ WARN_ON_ONCE(1); return ERR_PTR(-EBADF); @@ -4800,17 +4804,17 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh, if (nfs4_delegation_exists(clp, fp)) status = -EAGAIN; else if (!fp->fi_deleg_file) { - fp->fi_deleg_file = filp; + fp->fi_deleg_file = nf; /* increment early to prevent fi_deleg_file from being * cleared */ fp->fi_delegees = 1; - filp = NULL; + nf = NULL; } else fp->fi_delegees++; spin_unlock(&fp->fi_lock); spin_unlock(&state_lock); - if (filp) - fput(filp); + if (nf) + nfsd_file_put(nf); if (status) return ERR_PTR(status); @@ -4823,7 +4827,7 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh, if (!fl) goto out_clnt_odstate; - status = vfs_setlease(fp->fi_deleg_file, fl->fl_type, &fl, NULL); + status = vfs_setlease(fp->fi_deleg_file->nf_file, fl->fl_type, &fl, NULL); if (fl) locks_free_lock(fl); if (status) @@ -4843,7 +4847,7 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh, return dp; out_unlock: - vfs_setlease(fp->fi_deleg_file, F_UNLCK, NULL, (void **)&dp); + vfs_setlease(fp->fi_deleg_file->nf_file, F_UNLCK, NULL, (void **)&dp); out_clnt_odstate: put_clnt_odstate(dp->dl_clnt_odstate); nfs4_put_stid(&dp->dl_stid); @@ -5514,7 +5518,7 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate, return nfs_ok; } -static struct file * +static struct nfsd_file * nfs4_find_file(struct nfs4_stid *s, int flags) { if (!s) @@ -5524,7 +5528,7 @@ nfs4_find_file(struct nfs4_stid *s, int flags) case NFS4_DELEG_STID: if (WARN_ON_ONCE(!s->sc_file->fi_deleg_file)) return NULL; - return get_file(s->sc_file->fi_deleg_file); + return nfsd_file_get(s->sc_file->fi_deleg_file); case NFS4_OPEN_STID: case NFS4_LOCK_STID: if (flags & RD_STATE) @@ -5553,29 +5557,27 @@ nfs4_check_file(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfs4_stid *s, struct file **filpp, bool *tmp_file, int flags) { int acc = (flags & RD_STATE) ? NFSD_MAY_READ : NFSD_MAY_WRITE; - struct file *file; + struct nfsd_file *nf; __be32 status; - file = nfs4_find_file(s, flags); - if (file) { + nf = nfs4_find_file(s, flags); + if (nf) { status = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry, acc | NFSD_MAY_OWNER_OVERRIDE); - if (status) { - fput(file); - return status; - } - - *filpp = file; + if (status) + goto out; } else { - status = nfsd_open(rqstp, fhp, S_IFREG, acc, filpp); + status = nfsd_file_acquire(rqstp, fhp, acc, &nf); if (status) return status; if (tmp_file) *tmp_file = true; } - - return 0; + *filpp = get_file(nf->nf_file); +out: + nfsd_file_put(nf); + return status; } /* @@ -6393,7 +6395,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfs4_ol_stateid *lock_stp = NULL; struct nfs4_ol_stateid *open_stp = NULL; struct nfs4_file *fp; - struct file *filp = NULL; + struct nfsd_file *nf = NULL; struct nfsd4_blocked_lock *nbl = NULL; struct file_lock *file_lock = NULL; struct file_lock *conflock = NULL; @@ -6475,8 +6477,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, /* Fallthrough */ case NFS4_READ_LT: spin_lock(&fp->fi_lock); - filp = find_readable_file_locked(fp); - if (filp) + nf = find_readable_file_locked(fp); + if (nf) get_lock_access(lock_stp, NFS4_SHARE_ACCESS_READ); spin_unlock(&fp->fi_lock); fl_type = F_RDLCK; @@ -6487,8 +6489,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, /* Fallthrough */ case NFS4_WRITE_LT: spin_lock(&fp->fi_lock); - filp = find_writeable_file_locked(fp); - if (filp) + nf = find_writeable_file_locked(fp); + if (nf) get_lock_access(lock_stp, NFS4_SHARE_ACCESS_WRITE); spin_unlock(&fp->fi_lock); fl_type = F_WRLCK; @@ -6498,7 +6500,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, goto out; } - if (!filp) { + if (!nf) { status = nfserr_openmode; goto out; } @@ -6514,7 +6516,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, file_lock->fl_type = fl_type; file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lock_sop->lo_owner)); file_lock->fl_pid = current->tgid; - file_lock->fl_file = filp; + file_lock->fl_file = nf->nf_file; file_lock->fl_flags = fl_flags; file_lock->fl_lmops = &nfsd_posix_mng_ops; file_lock->fl_start = lock->lk_offset; @@ -6536,7 +6538,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, spin_unlock(&nn->blocked_locks_lock); } - err = vfs_lock_file(filp, F_SETLK, file_lock, conflock); + err = vfs_lock_file(nf->nf_file, F_SETLK, file_lock, conflock); switch (err) { case 0: /* success! */ nfs4_inc_and_copy_stateid(&lock->lk_resp_stateid, &lock_stp->st_stid); @@ -6571,8 +6573,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, } free_blocked_lock(nbl); } - if (filp) - fput(filp); + if (nf) + nfsd_file_put(nf); if (lock_stp) { /* Bump seqid manually if the 4.0 replay owner is openowner */ if (cstate->replay_owner && @@ -6699,7 +6701,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, { struct nfsd4_locku *locku = &u->locku; struct nfs4_ol_stateid *stp; - struct file *filp = NULL; + struct nfsd_file *nf = NULL; struct file_lock *file_lock = NULL; __be32 status; int err; @@ -6717,8 +6719,8 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, &stp, nn); if (status) goto out; - filp = find_any_file(stp->st_stid.sc_file); - if (!filp) { + nf = find_any_file(stp->st_stid.sc_file); + if (!nf) { status = nfserr_lock_range; goto put_stateid; } @@ -6726,13 +6728,13 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, if (!file_lock) { dprintk("NFSD: %s: unable to allocate lock!\n", __func__); status = nfserr_jukebox; - goto fput; + goto put_file; } file_lock->fl_type = F_UNLCK; file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(stp->st_stateowner)); file_lock->fl_pid = current->tgid; - file_lock->fl_file = filp; + file_lock->fl_file = nf->nf_file; file_lock->fl_flags = FL_POSIX; file_lock->fl_lmops = &nfsd_posix_mng_ops; file_lock->fl_start = locku->lu_offset; @@ -6741,14 +6743,14 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, locku->lu_length); nfs4_transform_lock_offset(file_lock); - err = vfs_lock_file(filp, F_SETLK, file_lock, NULL); + err = vfs_lock_file(nf->nf_file, F_SETLK, file_lock, NULL); if (err) { dprintk("NFSD: nfs4_locku: vfs_lock_file failed!\n"); goto out_nfserr; } nfs4_inc_and_copy_stateid(&locku->lu_stateid, &stp->st_stid); -fput: - fput(filp); +put_file: + nfsd_file_put(nf); put_stateid: mutex_unlock(&stp->st_mutex); nfs4_put_stid(&stp->st_stid); @@ -6760,7 +6762,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, out_nfserr: status = nfserrno(err); - goto fput; + goto put_file; } /* @@ -6773,17 +6775,17 @@ check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner) { struct file_lock *fl; int status = false; - struct file *filp = find_any_file(fp); + struct nfsd_file *nf = find_any_file(fp); struct inode *inode; struct file_lock_context *flctx; - if (!filp) { + if (!nf) { /* Any valid lock stateid should have some sort of access */ WARN_ON_ONCE(1); return status; } - inode = locks_inode(filp); + inode = locks_inode(nf->nf_file); flctx = inode->i_flctx; if (flctx && !list_empty_careful(&flctx->flc_posix)) { @@ -6796,7 +6798,7 @@ check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner) } spin_unlock(&flctx->flc_lock); } - fput(filp); + nfsd_file_put(nf); return status; } diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 8196bfb74f12..d89d1ade1254 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -516,7 +516,7 @@ struct nfs4_file { */ atomic_t fi_access[2]; u32 fi_share_deny; - struct file *fi_deleg_file; + struct nfsd_file *fi_deleg_file; int fi_delegees; struct knfsd_fh fi_fhandle; bool fi_had_conflict; @@ -565,7 +565,7 @@ struct nfs4_layout_stateid { spinlock_t ls_lock; struct list_head ls_layouts; u32 ls_layout_type; - struct file *ls_file; + struct nfsd_file *ls_file; struct nfsd4_callback ls_recall; stateid_t ls_recall_sid; bool ls_recalled; @@ -657,7 +657,7 @@ static inline void get_nfs4_file(struct nfs4_file *fi) { refcount_inc(&fi->fi_ref); } -struct file *find_any_file(struct nfs4_file *f); +struct nfsd_file *find_any_file(struct nfs4_file *f); /* grace period management */ void nfsd4_end_grace(struct nfsd_net *nn);