From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3379A524AF; Mon, 8 Apr 2024 13:52:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712584366; cv=none; b=lrskE3FVlhAoPijipSE39QDgwhnc5xmODTcujkkRk3LLRItzLbYUunZitvginx0h9ic5/VoNmzUWU+9jAXu5ik+m2K9Rn0cL+7orI/9/kgn3hpweSa3E21muflJ7KLt4y65g91phJpFASCmegRenI1ZPrvs5eo1TxKDTGS9bmbg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712584366; c=relaxed/simple; bh=xBiH/GYv5sy6xfE7ZrKwoT0nsDnTjEw1yXwzaVwyDDI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jf8OQXEjwsivAXfgJ8tNPFr9flvZTyv9Gqcvi1J9+A4pWD+AjQ7SzfFt+zpSlR81qS+JEpsb5XOgjVVxW27EyL3vX0oFK0UXgbzfSzLFiqybgIY72WvjTxXFc8835XdzRixUYpHxYp+Z6fqgOeCK/uBSk06suzHPTPV7x5cxW1w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=cxaNcVip; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="cxaNcVip" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A7A25C433C7; Mon, 8 Apr 2024 13:52:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1712584366; bh=xBiH/GYv5sy6xfE7ZrKwoT0nsDnTjEw1yXwzaVwyDDI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cxaNcVipcFc8it5fxJXYOMzlFrZOIaeBH8liR75mRcPAGLm5RrA2c6eTcElD6pKZ7 gBuJ8Dii+AQyBeN6JWTfSba+ZE9p3Dz43Hvav+6JmH7RLQVvgtis9BtwthDrrXAeQB o35islVczWdhFlyrfgg/yp/jqmWB9yokUzPmZnJ4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jeff Layton , NeilBrown , Chuck Lever Subject: [PATCH 5.15 412/690] NFSD: use (un)lock_inode instead of fh_(un)lock for file operations Date: Mon, 8 Apr 2024 14:54:38 +0200 Message-ID: <20240408125414.519176566@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240408125359.506372836@linuxfoundation.org> References: <20240408125359.506372836@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: NeilBrown [ Upstream commit bb4d53d66e4b8c8b8e5634802262e53851a2d2db ] When locking a file to access ACLs and xattrs etc, use explicit locking with inode_lock() instead of fh_lock(). This means that the calls to fh_fill_pre/post_attr() are also explicit which improves readability and allows us to place them only where they are needed. Only the xattr calls need pre/post information. When locking a file we don't need I_MUTEX_PARENT as the file is not a parent of anything, so we can use inode_lock() directly rather than the inode_lock_nested() call that fh_lock() uses. Reviewed-by: Jeff Layton Signed-off-by: NeilBrown Signed-off-by: Chuck Lever --- fs/nfsd/nfs2acl.c | 6 +++--- fs/nfsd/nfs3acl.c | 4 ++-- fs/nfsd/nfs4state.c | 9 +++++---- fs/nfsd/vfs.c | 34 ++++++++++++++++++++-------------- 4 files changed, 30 insertions(+), 23 deletions(-) diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c index efcd429b0f28e..87f224cd30a85 100644 --- a/fs/nfsd/nfs2acl.c +++ b/fs/nfsd/nfs2acl.c @@ -111,7 +111,7 @@ static __be32 nfsacld_proc_setacl(struct svc_rqst *rqstp) if (error) goto out_errno; - fh_lock(fh); + inode_lock(inode); error = set_posix_acl(&init_user_ns, inode, ACL_TYPE_ACCESS, argp->acl_access); @@ -122,7 +122,7 @@ static __be32 nfsacld_proc_setacl(struct svc_rqst *rqstp) if (error) goto out_drop_lock; - fh_unlock(fh); + inode_unlock(inode); fh_drop_write(fh); @@ -136,7 +136,7 @@ static __be32 nfsacld_proc_setacl(struct svc_rqst *rqstp) return rpc_success; out_drop_lock: - fh_unlock(fh); + inode_unlock(inode); fh_drop_write(fh); out_errno: resp->status = nfserrno(error); diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c index 35b2ebda14dac..9446c67436649 100644 --- a/fs/nfsd/nfs3acl.c +++ b/fs/nfsd/nfs3acl.c @@ -101,7 +101,7 @@ static __be32 nfsd3_proc_setacl(struct svc_rqst *rqstp) if (error) goto out_errno; - fh_lock(fh); + inode_lock(inode); error = set_posix_acl(&init_user_ns, inode, ACL_TYPE_ACCESS, argp->acl_access); @@ -111,7 +111,7 @@ static __be32 nfsd3_proc_setacl(struct svc_rqst *rqstp) argp->acl_default); out_drop_lock: - fh_unlock(fh); + inode_unlock(inode); fh_drop_write(fh); out_errno: resp->status = nfserrno(error); diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index f66fb39714893..66cf8217ebe57 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -7415,21 +7415,22 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, static __be32 nfsd_test_lock(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file_lock *lock) { struct nfsd_file *nf; + struct inode *inode; __be32 err; err = nfsd_file_acquire(rqstp, fhp, NFSD_MAY_READ, &nf); if (err) return err; - fh_lock(fhp); /* to block new leases till after test_lock: */ - err = nfserrno(nfsd_open_break_lease(fhp->fh_dentry->d_inode, - NFSD_MAY_READ)); + inode = fhp->fh_dentry->d_inode; + inode_lock(inode); /* to block new leases till after test_lock: */ + err = nfserrno(nfsd_open_break_lease(inode, NFSD_MAY_READ)); if (err) goto out; lock->fl_file = nf->nf_file; err = nfserrno(vfs_test_lock(nf->nf_file, lock)); lock->fl_file = NULL; out: - fh_unlock(fhp); + inode_unlock(inode); nfsd_file_put(nf); return err; } diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 7de76b37a9bc2..73a153be6a5ad 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -417,7 +417,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, return err; } - fh_lock(fhp); + inode_lock(inode); if (size_change) { /* * RFC5661, Section 18.30.4: @@ -465,7 +465,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, attr->na_aclerr = set_posix_acl(&init_user_ns, inode, ACL_TYPE_DEFAULT, attr->na_dpacl); - fh_unlock(fhp); + inode_unlock(inode); if (size_change) put_write_access(inode); out: @@ -2156,13 +2156,16 @@ nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, char **bufp, return err; } -/* - * Removexattr and setxattr need to call fh_lock to both lock the inode - * and set the change attribute. Since the top-level vfs_removexattr - * and vfs_setxattr calls already do their own inode_lock calls, call - * the _locked variant. Pass in a NULL pointer for delegated_inode, - * and let the client deal with NFS4ERR_DELAY (same as with e.g. - * setattr and remove). +/** + * nfsd_removexattr - Remove an extended attribute + * @rqstp: RPC transaction being executed + * @fhp: NFS filehandle of object with xattr to remove + * @name: name of xattr to remove (NUL-terminate) + * + * Pass in a NULL pointer for delegated_inode, and let the client deal + * with NFS4ERR_DELAY (same as with e.g. setattr and remove). + * + * Returns nfs_ok on success, or an nfsstat in network byte order. */ __be32 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp, char *name) @@ -2178,12 +2181,14 @@ nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp, char *name) if (ret) return nfserrno(ret); - fh_lock(fhp); + inode_lock(fhp->fh_dentry->d_inode); + fh_fill_pre_attrs(fhp); ret = __vfs_removexattr_locked(&init_user_ns, fhp->fh_dentry, name, NULL); - fh_unlock(fhp); + fh_fill_post_attrs(fhp); + inode_unlock(fhp->fh_dentry->d_inode); fh_drop_write(fhp); return nfsd_xattr_errno(ret); @@ -2203,12 +2208,13 @@ nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, char *name, ret = fh_want_write(fhp); if (ret) return nfserrno(ret); - fh_lock(fhp); + inode_lock(fhp->fh_dentry->d_inode); + fh_fill_pre_attrs(fhp); ret = __vfs_setxattr_locked(&init_user_ns, fhp->fh_dentry, name, buf, len, flags, NULL); - - fh_unlock(fhp); + fh_fill_post_attrs(fhp); + inode_unlock(fhp->fh_dentry->d_inode); fh_drop_write(fhp); return nfsd_xattr_errno(ret); -- 2.43.0