From 3f3503adb3328e9b2c031ad8d27889ecfa2a6bf7 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Fri, 13 Jun 2025 16:08:47 -0400 Subject: [PATCH] NFSD: Use vfs_iocb_iter_write() Refactor: Enable the use of IOCB flags to control NFSD's individual write operations. This allows the eventual use of atomic, uncached, direct, or asynchronous writes. Suggested-by: NeilBrown Reviewed-by: Christoph Hellwig Reviewed-by: NeilBrown Reviewed-by: Jeff Layton Signed-off-by: Chuck Lever --- fs/nfsd/vfs.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 3e21599294fe1..ee78b6fb17098 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1173,15 +1173,14 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); struct file *file = nf->nf_file; struct super_block *sb = file_inode(file)->i_sb; + struct kiocb kiocb; struct svc_export *exp; struct iov_iter iter; errseq_t since; __be32 nfserr; int host_err; - loff_t pos = offset; unsigned long exp_op_flags = 0; unsigned int pflags = current->flags; - rwf_t flags = 0; bool restore_flags = false; unsigned int nvecs; @@ -1207,16 +1206,17 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, if (!EX_ISSYNC(exp)) stable = NFS_UNSTABLE; - + init_sync_kiocb(&kiocb, file); + kiocb.ki_pos = offset; if (stable && !fhp->fh_use_wgather) - flags |= RWF_SYNC; + kiocb.ki_flags |= IOCB_DSYNC; nvecs = xdr_buf_to_bvec(rqstp->rq_bvec, rqstp->rq_maxpages, payload); iov_iter_bvec(&iter, ITER_SOURCE, rqstp->rq_bvec, nvecs, *cnt); since = READ_ONCE(file->f_wb_err); if (verf) nfsd_copy_write_verifier(verf, nn); - host_err = vfs_iter_write(file, &iter, &pos, flags); + host_err = vfs_iocb_iter_write(file, &kiocb, &iter); if (host_err < 0) { commit_reset_write_verifier(nn, rqstp, host_err); goto out_nfserr; -- 2.47.2