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Two fixes for the buffered reads and O_DIRECT writes serialization 

patch that went into -rc1 and a fixup for a bogus warning on older
 gcc versions.
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Merge tag 'ceph-for-5.4-rc8' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "Two fixes for the buffered reads and O_DIRECT writes serialization
  patch that went into -rc1 and a fixup for a bogus warning on older gcc
  versions"

* tag 'ceph-for-5.4-rc8' of git://github.com/ceph/ceph-client:
  rbd: silence bogus uninitialized warning in rbd_object_map_update_finish()
  ceph: increment/decrement dio counter on async requests
  ceph: take the inode lock before acquiring cap refs
This commit is contained in:
Linus Torvalds 2019-11-15 10:30:24 -08:00
parent a28f239e29 633739b2fe
commit 875fef493f
2 changed files with 23 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/block/rbd.c
View File

@ -2087,7 +2087,7 @@ static int rbd_object_map_update_finish(struct rbd_obj_request *obj_req,
struct rbd_device *rbd_dev = obj_req->img_request->rbd_dev;
struct ceph_osd_data *osd_data;
u64 objno;
u8 state, new_state, current_state;
u8 state, new_state, uninitialized_var(current_state);
bool has_current_state;
void *p;

29
fs/ceph/file.c
View File

@ -753,6 +753,9 @@ static void ceph_aio_complete(struct inode *inode,
if (!atomic_dec_and_test(&aio_req->pending_reqs))
return;
if (aio_req->iocb->ki_flags & IOCB_DIRECT)
inode_dio_end(inode);
ret = aio_req->error;
if (!ret)
ret = aio_req->total_len;
@ -1091,6 +1094,7 @@ ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter,
CEPH_CAP_FILE_RD);
list_splice(&aio_req->osd_reqs, &osd_reqs);
inode_dio_begin(inode);
while (!list_empty(&osd_reqs)) {
req = list_first_entry(&osd_reqs,
struct ceph_osd_request,
@ -1264,14 +1268,24 @@ again:
dout("aio_read %p %llx.%llx %llu~%u trying to get caps on %p\n",
inode, ceph_vinop(inode), iocb->ki_pos, (unsigned)len, inode);
if (iocb->ki_flags & IOCB_DIRECT)
ceph_start_io_direct(inode);
else
ceph_start_io_read(inode);
if (fi->fmode & CEPH_FILE_MODE_LAZY)
want = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO;
else
want = CEPH_CAP_FILE_CACHE;
ret = ceph_get_caps(filp, CEPH_CAP_FILE_RD, want, -1,
&got, &pinned_page);
if (ret < 0)
if (ret < 0) {
if (iocb->ki_flags & IOCB_DIRECT)
ceph_end_io_direct(inode);
else
ceph_end_io_read(inode);
return ret;
}
if ((got & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) == 0 ||
(iocb->ki_flags & IOCB_DIRECT) ||
@ -1283,16 +1297,12 @@ again:
if (ci->i_inline_version == CEPH_INLINE_NONE) {
if (!retry_op && (iocb->ki_flags & IOCB_DIRECT)) {
ceph_start_io_direct(inode);
ret = ceph_direct_read_write(iocb, to,
NULL, NULL);
ceph_end_io_direct(inode);
if (ret >= 0 && ret < len)
retry_op = CHECK_EOF;
} else {
ceph_start_io_read(inode);
ret = ceph_sync_read(iocb, to, &retry_op);
ceph_end_io_read(inode);
}
} else {
retry_op = READ_INLINE;
@ -1303,11 +1313,10 @@ again:
inode, ceph_vinop(inode), iocb->ki_pos, (unsigned)len,
ceph_cap_string(got));
ceph_add_rw_context(fi, &rw_ctx);
ceph_start_io_read(inode);
ret = generic_file_read_iter(iocb, to);
ceph_end_io_read(inode);
ceph_del_rw_context(fi, &rw_ctx);
}
dout("aio_read %p %llx.%llx dropping cap refs on %s = %d\n",
inode, ceph_vinop(inode), ceph_cap_string(got), (int)ret);
if (pinned_page) {
@ -1315,6 +1324,12 @@ again:
pinned_page = NULL;
}
ceph_put_cap_refs(ci, got);
if (iocb->ki_flags & IOCB_DIRECT)
ceph_end_io_direct(inode);
else
ceph_end_io_read(inode);
if (retry_op > HAVE_RETRIED && ret >= 0) {
int statret;
struct page *page = NULL;