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authorAl Viro <viro@zeniv.linux.org.uk>2014-03-05 00:24:06 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2014-05-07 01:32:43 +0400
commitcb66a7a1f149ff705fa37cad6d1252b046e0ad4f (patch)
tree32dd17f294e9ef96bfea727bba313a33590917ab /fs
parent0ae5e4d370599592eab845527b31708a4f3411be (diff)
downloadlinux-cb66a7a1f149ff705fa37cad6d1252b046e0ad4f.tar.xz
kill generic_segment_checks()
all callers of ->aio_read() and ->aio_write() have iov/nr_segs already checked - generic_segment_checks() done after that is just an odd way to spell iov_length(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/file.c7
-rw-r--r--fs/ceph/file.c13
-rw-r--r--fs/fuse/file.c7
-rw-r--r--fs/ntfs/file.c5
-rw-r--r--fs/ocfs2/file.c7
-rw-r--r--fs/xfs/xfs_file.c9
6 files changed, 9 insertions, 39 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 1dafe0701daf..a0a94a30d85a 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1726,12 +1726,7 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
mutex_lock(&inode->i_mutex);
- err = generic_segment_checks(iov, &nr_segs, &ocount, VERIFY_READ);
- if (err) {
- mutex_unlock(&inode->i_mutex);
- goto out;
- }
- count = ocount;
+ count = ocount = iov_length(iov, nr_segs);
current->backing_dev_info = inode->i_mapping->backing_dev_info;
err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index ef9115e4a6fa..21a56c27b74c 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -828,12 +828,8 @@ again:
inode, ceph_vinop(inode), iocb->ki_pos, (unsigned)len,
ceph_cap_string(got));
- if (!read) {
- ret = generic_segment_checks(iov, &nr_segs,
- &len, VERIFY_WRITE);
- if (ret)
- goto out;
- }
+ if (!read)
+ len = iov_length(iov, nr_segs);
iov_iter_init(&i, iov, nr_segs, len, read);
@@ -855,7 +851,6 @@ again:
ret = generic_file_aio_read(iocb, iov, nr_segs, pos);
}
-out:
dout("aio_read %p %llx.%llx dropping cap refs on %s = %d\n",
inode, ceph_vinop(inode), ceph_cap_string(got), (int)ret);
ceph_put_cap_refs(ci, got);
@@ -911,9 +906,7 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
mutex_lock(&inode->i_mutex);
- err = generic_segment_checks(iov, &nr_segs, &count, VERIFY_READ);
- if (err)
- goto out;
+ count = iov_length(iov, nr_segs);
/* We can write back this queue in page reclaim */
current->backing_dev_info = file->f_mapping->backing_dev_info;
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 126deb5d0a9c..9c7f346879e7 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1208,12 +1208,7 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
WARN_ON(iocb->ki_pos != pos);
- ocount = 0;
- err = generic_segment_checks(iov, &nr_segs, &ocount, VERIFY_READ);
- if (err)
- return err;
-
- count = ocount;
+ count = ocount = iov_length(iov, nr_segs);
mutex_lock(&inode->i_mutex);
/* We can write back this queue in page reclaim */
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index db9bd8a31725..b6fa457d8d01 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -2091,10 +2091,7 @@ static ssize_t ntfs_file_aio_write_nolock(struct kiocb *iocb,
size_t count; /* after file limit checks */
ssize_t written, err;
- count = 0;
- err = generic_segment_checks(iov, &nr_segs, &count, VERIFY_READ);
- if (err)
- return err;
+ count = iov_length(iov, nr_segs);
pos = *ppos;
/* We can write back this queue in page reclaim. */
current->backing_dev_info = mapping->backing_dev_info;
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index d6d78c2aa96e..d33c4ced0baf 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -2355,12 +2355,7 @@ relock:
/* communicate with ocfs2_dio_end_io */
ocfs2_iocb_set_rw_locked(iocb, rw_level);
- ret = generic_segment_checks(iov, &nr_segs, &ocount,
- VERIFY_READ);
- if (ret)
- goto out_dio;
-
- count = ocount;
+ count = ocount = iov_length(iov, nr_segs);
ret = generic_write_checks(file, ppos, &count,
S_ISBLK(inode->i_mode));
if (ret)
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 8617497867c7..f0f8084a67be 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -253,9 +253,7 @@ xfs_file_aio_read(
if (file->f_mode & FMODE_NOCMTIME)
ioflags |= IO_INVIS;
- ret = generic_segment_checks(iovp, &nr_segs, &size, VERIFY_WRITE);
- if (ret < 0)
- return ret;
+ size = iov_length(iovp, nr_segs);
if (unlikely(ioflags & IO_ISDIRECT)) {
xfs_buftarg_t *target =
@@ -777,10 +775,7 @@ xfs_file_aio_write(
BUG_ON(iocb->ki_pos != pos);
- ret = generic_segment_checks(iovp, &nr_segs, &ocount, VERIFY_READ);
- if (ret)
- return ret;
-
+ ocount = iov_length(iovp, nr_segs);
if (ocount == 0)
return 0;