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author | 2018-10-20 00:57:56 +0100 | |
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committer | 2018-10-24 00:41:07 +0100 | |
commit | aa563d7bca6e882ec2bdae24603c8f016401a144 (patch) | |
tree | 874b10fc11da3178e4630f7a430e1b299d3b3806 /fs/nfsd | |
parent | iov_iter: Use accessor function (diff) | |
download | linux-aa563d7bca6e882ec2bdae24603c8f016401a144.tar.gz linux-aa563d7bca6e882ec2bdae24603c8f016401a144.tar.bz2 linux-aa563d7bca6e882ec2bdae24603c8f016401a144.zip |
iov_iter: Separate type from direction and use accessor functions
In the iov_iter struct, separate the iterator type from the iterator
direction and use accessor functions to access them in most places.
Convert a bunch of places to use switch-statements to access them rather
then chains of bitwise-AND statements. This makes it easier to add further
iterator types. Also, this can be more efficient as to implement a switch
of small contiguous integers, the compiler can use ~50% fewer compare
instructions than it has to use bitwise-and instructions.
Further, cease passing the iterator type into the iterator setup function.
The iterator function can set that itself. Only the direction is required.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r-- | fs/nfsd/vfs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index b53e76391e52..8b90f5480904 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -923,7 +923,7 @@ __be32 nfsd_readv(struct svc_rqst *rqstp, struct svc_fh *fhp, int host_err; trace_nfsd_read_vector(rqstp, fhp, offset, *count); - iov_iter_kvec(&iter, READ | ITER_KVEC, vec, vlen, *count); + iov_iter_kvec(&iter, READ, vec, vlen, *count); host_err = vfs_iter_read(file, &iter, &offset, 0); return nfsd_finish_read(rqstp, fhp, file, offset, count, host_err); } @@ -999,7 +999,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, if (stable && !use_wgather) flags |= RWF_SYNC; - iov_iter_kvec(&iter, WRITE | ITER_KVEC, vec, vlen, *cnt); + iov_iter_kvec(&iter, WRITE, vec, vlen, *cnt); host_err = vfs_iter_write(file, &iter, &pos, flags); if (host_err < 0) goto out_nfserr; |