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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-04-09 19:55:47 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-04-12 05:30:21 +0300 |
| commit | 3309dd04cbcd2cdad168485af5cf3576b5051e49 (patch) | |
| tree | 3e01f865306dee01b31f34c9e7e819a5f42a4087 /fs/nfs/direct.c | |
| parent | 90320251db0fe3d05f2b10686ec936c7d6ecd99a (diff) | |
| download | linux-3309dd04cbcd2cdad168485af5cf3576b5051e49.tar.xz | |
switch generic_write_checks() to iocb and iter
... returning -E... upon error and amount of data left in iter after
(possible) truncation upon success. Note, that normal case gives
a non-zero (positive) return value, so any tests for != 0 _must_ be
updated.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Conflicts:
fs/ext4/file.c
Diffstat (limited to 'fs/nfs/direct.c')
| -rw-r--r-- | fs/nfs/direct.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 5ddd77acb3f7..9634189b8545 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -969,24 +969,19 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, struct nfs_direct_req *dreq; struct nfs_lock_context *l_ctx; loff_t end; - size_t count = iov_iter_count(iter); - end = (pos + count - 1) >> PAGE_CACHE_SHIFT; - - nfs_add_stats(mapping->host, NFSIOS_DIRECTWRITTENBYTES, count); dfprintk(FILE, "NFS: direct write(%pD2, %zd@%Ld)\n", - file, count, (long long) pos); + file, iov_iter_count(iter), (long long) iocb->ki_pos); - result = generic_write_checks(file, &pos, &count); - if (result) + result = generic_write_checks(iocb, iter); + if (result <= 0) goto out; - result = -EINVAL; - if ((ssize_t) count < 0) - goto out; - result = 0; - if (!count) - goto out; + nfs_add_stats(mapping->host, NFSIOS_DIRECTWRITTENBYTES, + iov_iter_count(iter)); + + pos = iocb->ki_pos; + end = (pos + iov_iter_count(iter) - 1) >> PAGE_CACHE_SHIFT; mutex_lock(&inode->i_mutex); @@ -1001,7 +996,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, goto out_unlock; } - task_io_account_write(count); + task_io_account_write(iov_iter_count(iter)); result = -ENOMEM; dreq = nfs_direct_req_alloc(); @@ -1009,7 +1004,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, goto out_unlock; dreq->inode = inode; - dreq->bytes_left = count; + dreq->bytes_left = iov_iter_count(iter); dreq->io_start = pos; dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp)); l_ctx = nfs_get_lock_context(dreq->ctx); |