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| author | Peng Tao <bergwolf@gmail.com> | 2012-08-24 00:27:48 +0800 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-10-01 15:37:34 -0700 |
| commit | 7acdb026818455638543b04b68d4a580c367fba8 (patch) | |
| tree | a765a5fe13553aad3fc1aeb8c4e8685242654bde /fs/nfs/direct.c | |
| parent | 6f2ea7f2a3ff3cd342bface43f8b4bf5e431cf36 (diff) | |
| download | linux-7acdb026818455638543b04b68d4a580c367fba8.tar.gz linux-7acdb026818455638543b04b68d4a580c367fba8.tar.bz2 linux-7acdb026818455638543b04b68d4a580c367fba8.zip | |
NFSv41: fix DIO write_io calculation
pnfs_within_mdsthreshold() is called inside pg_init. We need to set
read_io/write_io before that. Otherwise we fail pnfs_within_mdsthreshold()
and IO goes to MDS.
A simple test case:
dd if=foo of=/mnt/pnfs/bar bs=10M count=1 oflag=direct
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/direct.c')
| -rw-r--r-- | fs/nfs/direct.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 22130df16218..253d397780b1 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -467,10 +467,10 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov, if (!is_sync_kiocb(iocb)) dreq->iocb = iocb; + NFS_I(inode)->read_io += iov_length(iov, nr_segs); result = nfs_direct_read_schedule_iovec(dreq, iov, nr_segs, pos, uio); if (!result) result = nfs_direct_wait(dreq); - NFS_I(inode)->read_io += result; out_release: nfs_direct_req_release(dreq); out: @@ -818,6 +818,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq, get_dreq(dreq); atomic_inc(&inode->i_dio_count); + NFS_I(dreq->inode)->write_io += iov_length(iov, nr_segs); for (seg = 0; seg < nr_segs; seg++) { const struct iovec *vec = &iov[seg]; result = nfs_direct_write_schedule_segment(&desc, vec, pos, uio); @@ -829,7 +830,6 @@ 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 |