diff options
| author | Andy Adamson <andros@netapp.com> | 2012-05-24 13:13:24 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-05-24 16:15:48 -0400 |
| commit | 2701d086dbfca03b2d28b25c6dc11dd78d0e26ad (patch) | |
| tree | 69f81dd2a979600cd3ff4f1861c6d7ef5c25b1ed | |
| parent | 82be417aa37c05116e310b0f2171187ea389f89b (diff) | |
NFSv4.1 add nfs_inode book keeping for mdsthreshold
Keep track of the number of bytes read or written via buffered, direct, and
mem-mapped i/o for use by mdsthreshold size_io hints.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/direct.c | 2 | ||||
| -rw-r--r-- | fs/nfs/file.c | 1 | ||||
| -rw-r--r-- | fs/nfs/inode.c | 2 | ||||
| -rw-r--r-- | fs/nfs/pnfs.c | 3 | ||||
| -rw-r--r-- | fs/nfs/read.c | 2 | ||||
| -rw-r--r-- | include/linux/nfs_fs.h | 3 |
6 files changed, 13 insertions, 0 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index c47a46eaf905..23d170bc44f4 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -447,6 +447,7 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov, result = nfs_direct_read_schedule_iovec(dreq, iov, nr_segs, pos); if (!result) result = nfs_direct_wait(dreq); + NFS_I(inode)->read_io += result; out_release: nfs_direct_req_release(dreq); out: @@ -785,6 +786,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq, pos += vec->iov_len; } nfs_pageio_complete(&desc); + NFS_I(dreq->inode)->write_io += desc.pg_bytes_written; /* * If no bytes were started, return the error, and let the diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 8eda8a6644c3..56311ca5f9f8 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -424,6 +424,7 @@ static int nfs_write_end(struct file *file, struct address_space *mapping, if (status < 0) return status; + NFS_I(mapping->host)->write_io += copied; return copied; } diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 889f7e5e92e1..a6f5fbbe9b9c 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -323,6 +323,8 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr) inode->i_gid = -2; inode->i_blocks = 0; memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf)); + nfsi->write_io = 0; + nfsi->read_io = 0; nfsi->read_cache_jiffies = fattr->time_start; nfsi->attr_gencount = fattr->gencount; diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index cbcb6aea58a3..6620606f2687 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -395,6 +395,9 @@ mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, dprintk("%s:Begin lo %p\n", __func__, lo); if (list_empty(&lo->plh_segs)) { + /* Reset MDS Threshold I/O counters */ + NFS_I(lo->plh_inode)->write_io = 0; + NFS_I(lo->plh_inode)->read_io = 0; if (!test_and_set_bit(NFS_LAYOUT_DESTROYED, &lo->plh_flags)) put_layout_hdr_locked(lo); return 0; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 2cfdd7785411..86ced7836214 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -152,6 +152,7 @@ int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode, nfs_pageio_init_read(&pgio, inode, &nfs_async_read_completion_ops); nfs_pageio_add_request(&pgio, new); nfs_pageio_complete(&pgio); + NFS_I(inode)->read_io += pgio.pg_bytes_written; return 0; } @@ -656,6 +657,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping, ret = read_cache_pages(mapping, pages, readpage_async_filler, &desc); nfs_pageio_complete(&pgio); + NFS_I(inode)->read_io += pgio.pg_bytes_written; npages = (pgio.pg_bytes_written + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; nfs_add_stats(inode, NFSIOS_READPAGES, npages); read_complete: diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index ce910cb7d761..b23cfc120edb 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -202,6 +202,9 @@ struct nfs_inode { /* pNFS layout information */ struct pnfs_layout_hdr *layout; #endif /* CONFIG_NFS_V4*/ + /* how many bytes have been written/read and how many bytes queued up */ + __u64 write_io; + __u64 read_io; #ifdef CONFIG_NFS_FSCACHE struct fscache_cookie *fscache; #endif |