xiaomi-sm8450/android_kernel_xiaomi_sm8450
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kill generic_segment_checks()

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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>
This commit is contained in:
Al Viro
2014-03-04 15:24:06 -05:00
parent 0ae5e4d370
commit cb66a7a1f1
10 changed files with 16 additions and 104 deletions
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13
fs/ceph/file.c
View File

@@ -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;