Messages in this thread Patch in this message | | | From | Yue Hu <> | Subject | [PATCH] erofs: remove useless cache strategy of DELAYEDALLOC | Date | Sat, 6 Nov 2021 16:11:00 +0800 |
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DELAYEDALLOC is not used at all, remove related dead code.
Signed-off-by: Yue Hu <huyue2@yulong.com> --- fs/erofs/zdata.c | 20 -------------------- 1 file changed, 20 deletions(-)
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index bcb1b91b234f..812c7c6ae456 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -96,16 +96,9 @@ static void z_erofs_free_pcluster(struct z_erofs_pcluster *pcl) DBG_BUGON(1); } -/* - * a compressed_pages[] placeholder in order to avoid - * being filled with file pages for in-place decompression. - */ -#define PAGE_UNALLOCATED ((void *)0x5F0E4B1D) - /* how to allocate cached pages for a pcluster */ enum z_erofs_cache_alloctype { DONTALLOC, /* don't allocate any cached pages */ - DELAYEDALLOC, /* delayed allocation (at the time of submitting io) */ /* * try to use cached I/O if page allocation succeeds or fallback * to in-place I/O instead to avoid any direct reclaim. @@ -267,10 +260,6 @@ static void preload_compressed_pages(struct z_erofs_collector *clt, /* I/O is needed, no possible to decompress directly */ standalone = false; switch (type) { - case DELAYEDALLOC: - t = tagptr_init(compressed_page_t, - PAGE_UNALLOCATED); - break; case TRYALLOC: newpage = erofs_allocpage(pagepool, gfp); if (!newpage) @@ -1089,15 +1078,6 @@ static struct page *pickup_page_for_submission(struct z_erofs_pcluster *pcl, if (!page) goto out_allocpage; - /* - * the cached page has not been allocated and - * an placeholder is out there, prepare it now. - */ - if (page == PAGE_UNALLOCATED) { - tocache = true; - goto out_allocpage; - } - /* process the target tagged pointer */ t = tagptr_init(compressed_page_t, page); justfound = tagptr_unfold_tags(t); -- 2.17.1
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