diff options
| -rw-r--r-- | fs/nfs/direct.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 85e4e4be401a..b8797ae6831f 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -939,9 +939,12 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const struct iovec *iov, struct inode *inode = mapping->host; struct nfs_direct_req *dreq; struct nfs_lock_context *l_ctx; + loff_t end; size_t count; count = iov_length(iov, nr_segs); + end = (pos + count - 1) >> PAGE_CACHE_SHIFT; + nfs_add_stats(mapping->host, NFSIOS_DIRECTWRITTENBYTES, count); dfprintk(FILE, "NFS: direct write(%pD2, %zd@%Ld)\n", @@ -958,16 +961,25 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const struct iovec *iov, if (!count) goto out; + mutex_lock(&inode->i_mutex); + result = nfs_sync_mapping(mapping); if (result) - goto out; + goto out_unlock; + + if (mapping->nrpages) { + result = invalidate_inode_pages2_range(mapping, + pos >> PAGE_CACHE_SHIFT, end); + if (result) + goto out_unlock; + } task_io_account_write(count); result = -ENOMEM; dreq = nfs_direct_req_alloc(); if (!dreq) - goto out; + goto out_unlock; dreq->inode = inode; dreq->bytes_left = count; @@ -982,6 +994,14 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const struct iovec *iov, dreq->iocb = iocb; result = nfs_direct_write_schedule_iovec(dreq, iov, nr_segs, pos, uio); + + if (mapping->nrpages) { + invalidate_inode_pages2_range(mapping, + pos >> PAGE_CACHE_SHIFT, end); + } + + mutex_unlock(&inode->i_mutex); + if (!result) { result = nfs_direct_wait(dreq); if (result > 0) { @@ -994,8 +1014,13 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const struct iovec *iov, spin_unlock(&inode->i_lock); } } + nfs_direct_req_release(dreq); + return result; + out_release: nfs_direct_req_release(dreq); +out_unlock: + mutex_unlock(&inode->i_mutex); out: return result; } |