diff options
| author | Jeff Layton <jlayton@kernel.org> | 2020-07-30 11:03:55 -0400 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2020-08-04 19:41:12 +0200 |
| commit | a0102bda5bc0991c5c8c7c07770b236894a810fd (patch) | |
| tree | 19cc129432e28e3bd4d52fd5a761b92d3d5edaa7 /fs/ceph/addr.c | |
| parent | b748fc7a8763a5b3f8149f12c45711cd73ef8176 (diff) | |
ceph: move sb->wb_pagevec_pool to be a global mempool
When doing some testing recently, I hit some page allocation failures
on mount, when creating the wb_pagevec_pool for the mount. That
requires 128k (32 contiguous pages), and after thrashing the memory
during an xfstests run, sometimes that would fail.
128k for each mount seems like a lot to hold in reserve for a rainy
day, so let's change this to a global mempool that gets allocated
when the module is plugged in.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/addr.c')
| -rw-r--r-- | fs/ceph/addr.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 01ad09733ac7..6ea761c84494 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -862,8 +862,7 @@ static void writepages_finish(struct ceph_osd_request *req) osd_data = osd_req_op_extent_osd_data(req, 0); if (osd_data->pages_from_pool) - mempool_free(osd_data->pages, - ceph_sb_to_client(inode->i_sb)->wb_pagevec_pool); + mempool_free(osd_data->pages, ceph_wb_pagevec_pool); else kfree(osd_data->pages); ceph_osdc_put_request(req); @@ -955,10 +954,10 @@ retry: int num_ops = 0, op_idx; unsigned i, pvec_pages, max_pages, locked_pages = 0; struct page **pages = NULL, **data_pages; - mempool_t *pool = NULL; /* Becomes non-null if mempool used */ struct page *page; pgoff_t strip_unit_end = 0; u64 offset = 0, len = 0; + bool from_pool = false; max_pages = wsize >> PAGE_SHIFT; @@ -1057,16 +1056,16 @@ get_more_pages: sizeof(*pages), GFP_NOFS); if (!pages) { - pool = fsc->wb_pagevec_pool; - pages = mempool_alloc(pool, GFP_NOFS); + from_pool = true; + pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS); BUG_ON(!pages); } len = 0; } else if (page->index != (offset + len) >> PAGE_SHIFT) { - if (num_ops >= (pool ? CEPH_OSD_SLAB_OPS : - CEPH_OSD_MAX_OPS)) { + if (num_ops >= (from_pool ? CEPH_OSD_SLAB_OPS : + CEPH_OSD_MAX_OPS)) { redirty_page_for_writepage(wbc, page); unlock_page(page); break; @@ -1161,7 +1160,7 @@ new_request: offset, len); osd_req_op_extent_osd_data_pages(req, op_idx, data_pages, len, 0, - !!pool, false); + from_pool, false); osd_req_op_extent_update(req, op_idx, len); len = 0; @@ -1188,12 +1187,12 @@ new_request: dout("writepages got pages at %llu~%llu\n", offset, len); osd_req_op_extent_osd_data_pages(req, op_idx, data_pages, len, - 0, !!pool, false); + 0, from_pool, false); osd_req_op_extent_update(req, op_idx, len); BUG_ON(op_idx + 1 != req->r_num_ops); - pool = NULL; + from_pool = false; if (i < locked_pages) { BUG_ON(num_ops <= req->r_num_ops); num_ops -= req->r_num_ops; @@ -1204,8 +1203,8 @@ new_request: pages = kmalloc_array(locked_pages, sizeof(*pages), GFP_NOFS); if (!pages) { - pool = fsc->wb_pagevec_pool; - pages = mempool_alloc(pool, GFP_NOFS); + from_pool = true; + pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS); BUG_ON(!pages); } memcpy(pages, data_pages + i, |