linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v9 78/96] mm/filemap: Add folio_add_to_page_cache
Date: Wed,  5 May 2021 16:06:10 +0100	[thread overview]
Message-ID: <20210505150628.111735-79-willy@infradead.org> (raw)
In-Reply-To: <20210505150628.111735-1-willy@infradead.org>

Pages being added to the page cache should already be folios, so
turn add_to_page_cache_lru() into a wrapper.  Saves hundreds of
bytes of text.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 include/linux/mm.h      |  7 -----
 include/linux/pagemap.h | 22 ++++++++++++---
 mm/filemap.c            | 59 ++++++++++++++++++++---------------------
 3 files changed, 48 insertions(+), 40 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3f91c9971b32..a6144d325064 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -223,13 +223,6 @@ int overcommit_kbytes_handler(struct ctl_table *, int, void *, size_t *,
 		loff_t *);
 int overcommit_policy_handler(struct ctl_table *, int, void *, size_t *,
 		loff_t *);
-/*
- * Any attempt to mark this function as static leads to build failure
- * when CONFIG_DEBUG_INFO_BTF is enabled because __add_to_page_cache_locked()
- * is referred to by BPF code. This must be visible for error injection.
- */
-int __add_to_page_cache_locked(struct page *page, struct address_space *mapping,
-		pgoff_t index, gfp_t gfp, void **shadowp);
 
 #if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP)
 #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 64370f615aba..8eab3d8400d2 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -951,9 +951,9 @@ static inline int fault_in_pages_readable(const char __user *uaddr, int size)
 }
 
 int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
-				pgoff_t index, gfp_t gfp_mask);
-int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
-				pgoff_t index, gfp_t gfp_mask);
+				pgoff_t index, gfp_t gfp);
+int folio_add_to_page_cache(struct folio *folio, struct address_space *mapping,
+				pgoff_t index, gfp_t gfp);
 extern void delete_from_page_cache(struct page *page);
 extern void __delete_from_page_cache(struct page *page, void *shadow);
 void replace_page_cache_page(struct page *old, struct page *new);
@@ -978,6 +978,22 @@ static inline int add_to_page_cache(struct page *page,
 	return error;
 }
 
+static inline int add_to_page_cache_lru(struct page *page,
+		struct address_space *mapping, pgoff_t index, gfp_t gfp)
+{
+	return folio_add_to_page_cache((struct folio *)page, mapping,
+			index, gfp);
+}
+
+/*
+ * Making this function static leads to build failure when
+ * CONFIG_DEBUG_INFO_BTF is enabled because __add_to_page_cache_locked()
+ * is referred to by BPF code.  This must be visible for error injection.
+ */
+int __add_to_page_cache_locked(struct folio *folio,
+		struct address_space *mapping,
+		pgoff_t index, gfp_t gfp, void **shadowp);
+
 /**
  * struct readahead_control - Describes a readahead request.
  *
diff --git a/mm/filemap.c b/mm/filemap.c
index a9c16f05b863..062610ae95d8 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -853,26 +853,25 @@ void replace_page_cache_page(struct page *old, struct page *new)
 }
 EXPORT_SYMBOL_GPL(replace_page_cache_page);
 
-noinline int __add_to_page_cache_locked(struct page *page,
-					struct address_space *mapping,
-					pgoff_t offset, gfp_t gfp,
-					void **shadowp)
+noinline int __add_to_page_cache_locked(struct folio *folio,
+		struct address_space *mapping, pgoff_t index, gfp_t gfp,
+		void **shadowp)
 {
-	XA_STATE(xas, &mapping->i_pages, offset);
-	int huge = PageHuge(page);
+	XA_STATE(xas, &mapping->i_pages, index);
+	int huge = folio_hugetlb(folio);
 	int error;
 	bool charged = false;
 
-	VM_BUG_ON_PAGE(!PageLocked(page), page);
-	VM_BUG_ON_PAGE(PageSwapBacked(page), page);
+	VM_BUG_ON_FOLIO(!folio_locked(folio), folio);
+	VM_BUG_ON_FOLIO(folio_swapbacked(folio), folio);
 	mapping_set_update(&xas, mapping);
 
-	get_page(page);
-	page->mapping = mapping;
-	page->index = offset;
+	folio_get(folio);
+	folio->mapping = mapping;
+	folio->index = index;
 
 	if (!huge) {
-		error = mem_cgroup_charge(page, current->mm, gfp);
+		error = folio_charge_cgroup(folio, current->mm, gfp);
 		if (error)
 			goto error;
 		charged = true;
@@ -884,7 +883,7 @@ noinline int __add_to_page_cache_locked(struct page *page,
 		unsigned int order = xa_get_order(xas.xa, xas.xa_index);
 		void *entry, *old = NULL;
 
-		if (order > thp_order(page))
+		if (order > folio_order(folio))
 			xas_split_alloc(&xas, xa_load(xas.xa, xas.xa_index),
 					order, gfp);
 		xas_lock_irq(&xas);
@@ -901,13 +900,13 @@ noinline int __add_to_page_cache_locked(struct page *page,
 				*shadowp = old;
 			/* entry may have been split before we acquired lock */
 			order = xa_get_order(xas.xa, xas.xa_index);
-			if (order > thp_order(page)) {
+			if (order > folio_order(folio)) {
 				xas_split(&xas, old, order);
 				xas_reset(&xas);
 			}
 		}
 
-		xas_store(&xas, page);
+		xas_store(&xas, folio);
 		if (xas_error(&xas))
 			goto unlock;
 
@@ -915,7 +914,7 @@ noinline int __add_to_page_cache_locked(struct page *page,
 
 		/* hugetlb pages do not participate in page cache accounting */
 		if (!huge)
-			__inc_lruvec_page_state(page, NR_FILE_PAGES);
+			__lruvec_stat_add_folio(folio, NR_FILE_PAGES);
 unlock:
 		xas_unlock_irq(&xas);
 	} while (xas_nomem(&xas, gfp));
@@ -923,16 +922,16 @@ noinline int __add_to_page_cache_locked(struct page *page,
 	if (xas_error(&xas)) {
 		error = xas_error(&xas);
 		if (charged)
-			mem_cgroup_uncharge(page);
+			folio_uncharge_cgroup(folio);
 		goto error;
 	}
 
-	trace_mm_filemap_add_to_page_cache(page);
+	trace_mm_filemap_add_to_page_cache(&folio->page);
 	return 0;
 error:
-	page->mapping = NULL;
+	folio->mapping = NULL;
 	/* Leave page->index set: truncation relies upon it */
-	put_page(page);
+	folio_put(folio);
 	return error;
 }
 ALLOW_ERROR_INJECTION(__add_to_page_cache_locked, ERRNO);
@@ -952,22 +951,22 @@ ALLOW_ERROR_INJECTION(__add_to_page_cache_locked, ERRNO);
 int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
 		pgoff_t offset, gfp_t gfp_mask)
 {
-	return __add_to_page_cache_locked(page, mapping, offset,
+	return __add_to_page_cache_locked(page_folio(page), mapping, offset,
 					  gfp_mask, NULL);
 }
 EXPORT_SYMBOL(add_to_page_cache_locked);
 
-int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
-				pgoff_t offset, gfp_t gfp_mask)
+int folio_add_to_page_cache(struct folio *folio, struct address_space *mapping,
+				pgoff_t index, gfp_t gfp_mask)
 {
 	void *shadow = NULL;
 	int ret;
 
-	__SetPageLocked(page);
-	ret = __add_to_page_cache_locked(page, mapping, offset,
+	__folio_set_locked_flag(folio);
+	ret = __add_to_page_cache_locked(folio, mapping, index,
 					 gfp_mask, &shadow);
 	if (unlikely(ret))
-		__ClearPageLocked(page);
+		__folio_clear_locked_flag(folio);
 	else {
 		/*
 		 * The page might have been evicted from cache only
@@ -977,14 +976,14 @@ int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
 		 * data from the working set, only to cache data that will
 		 * get overwritten with something else, is a waste of memory.
 		 */
-		WARN_ON_ONCE(PageActive(page));
+		WARN_ON_ONCE(folio_active(folio));
 		if (!(gfp_mask & __GFP_WRITE) && shadow)
-			workingset_refault(page_folio(page), shadow);
-		lru_cache_add(page);
+			workingset_refault(folio, shadow);
+		folio_add_lru(folio);
 	}
 	return ret;
 }
-EXPORT_SYMBOL_GPL(add_to_page_cache_lru);
+EXPORT_SYMBOL_GPL(folio_add_to_page_cache);
 
 #ifdef CONFIG_NUMA
 struct folio *filemap_alloc_folio(gfp_t gfp, unsigned int order)
-- 
2.30.2


  parent reply	other threads:[~2021-05-05 17:59 UTC|newest]

Thread overview: 108+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-05 15:04 [PATCH v9 00/96] Memory folios Matthew Wilcox (Oracle)
2021-05-05 15:04 ` [PATCH v9 01/96] mm: Optimise nth_page for contiguous memmap Matthew Wilcox (Oracle)
2021-05-05 17:24   ` Vlastimil Babka
2021-05-05 15:04 ` [PATCH v9 02/96] mm: Make __dump_page static Matthew Wilcox (Oracle)
2021-05-05 15:04 ` [PATCH v9 03/96] mm/debug: Factor PagePoisoned out of __dump_page Matthew Wilcox (Oracle)
2021-05-05 15:04 ` [PATCH v9 04/96] mm/page_owner: Constify dump_page_owner Matthew Wilcox (Oracle)
2021-05-05 15:04 ` [PATCH v9 05/96] mm: Make compound_head const-preserving Matthew Wilcox (Oracle)
2021-05-05 15:04 ` [PATCH v9 06/96] mm: Constify get_pfnblock_flags_mask and get_pfnblock_migratetype Matthew Wilcox (Oracle)
2021-05-05 15:04 ` [PATCH v9 07/96] mm: Constify page_count and page_ref_count Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 08/96] mm: Fix struct page layout on 32-bit systems Matthew Wilcox (Oracle)
2021-05-05 17:33   ` Vlastimil Babka
2021-05-05 15:05 ` [PATCH v9 09/96] mm: Introduce struct folio Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 10/96] mm: Add folio_pgdat and folio_zone Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 11/96] mm/vmstat: Add functions to account folio statistics Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 12/96] mm/debug: Add VM_BUG_ON_FOLIO and VM_WARN_ON_ONCE_FOLIO Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 13/96] mm: Add folio reference count functions Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 14/96] mm: Add folio_put Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 15/96] mm: Add folio_get Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 16/96] mm: Add folio flag manipulation functions Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 17/96] mm: Add folio_young() and folio_idle() Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 18/96] mm: Handle per-folio private data Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 19/96] mm/filemap: Add folio_index, folio_file_page and folio_contains Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 20/96] mm/filemap: Add folio_next_index Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 21/96] mm/filemap: Add folio_offset and folio_file_offset Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 22/96] mm/util: Add folio_mapping and folio_file_mapping Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 23/96] mm: Add folio_mapcount Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 24/96] mm/memcg: Add folio wrappers for various functions Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 25/96] mm/filemap: Add folio_unlock Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 26/96] mm/filemap: Add folio_lock Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 27/96] mm/filemap: Add folio_lock_killable Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 28/96] mm/filemap: Add __folio_lock_async Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 29/96] mm/filemap: Add __folio_lock_or_retry Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 30/96] mm/filemap: Add folio_wait_locked Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 31/96] mm/swap: Add folio_rotate_reclaimable Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 32/96] mm/filemap: Add folio_end_writeback Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 33/96] mm/writeback: Add folio_wait_writeback Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 34/96] mm/writeback: Add folio_wait_stable Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 35/96] mm/filemap: Add folio_wait_bit Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 36/96] mm/filemap: Add folio_wake_bit Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 37/96] mm/filemap: Convert page wait queues to be folios Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 38/96] mm/filemap: Add folio private_2 functions Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 39/96] fs/netfs: Add folio fscache functions Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 40/96] mm: Add folio_mapped Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 41/96] mm/workingset: Convert workingset_activation to take a folio Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 42/96] mm/swap: Add folio_activate Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 43/96] mm/swap: Add folio_mark_accessed Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 44/96] mm/rmap: Add folio_mkclean Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 45/96] mm: Add kmap_local_folio Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 46/96] mm: Add flush_dcache_folio Matthew Wilcox (Oracle)
2021-05-05 23:35   ` kernel test robot
2021-05-06  2:33     ` Matthew Wilcox
2021-05-05 15:05 ` [PATCH v9 47/96] mm: Add arch_make_folio_accessible Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 48/96] mm/memcg: Remove 'page' parameter to mem_cgroup_charge_statistics Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 49/96] mm/memcg: Use the node id in mem_cgroup_update_tree Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 50/96] mm/memcg: Convert commit_charge to take a folio Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 51/96] mm/memcg: Add folio_charge_cgroup Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 52/96] mm/memcg: Add folio_uncharge_cgroup Matthew Wilcox (Oracle)
2021-05-05 20:24   ` kernel test robot
2021-05-05 15:05 ` [PATCH v9 53/96] mm/memcg: Convert mem_cgroup_track_foreign_dirty_slowpath to folio Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 54/96] mm/writeback: Rename __add_wb_stat to wb_stat_mod Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 55/96] flex_proportions: Allow N events instead of 1 Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 56/96] mm/writeback: Change __wb_writeout_inc to __wb_writeout_add Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 57/96] mm/writeback: Convert test_clear_page_writeback to __folio_end_writeback Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 58/96] mm/writeback: Add folio_start_writeback Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 59/96] mm/writeback: Add folio_mark_dirty Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 60/96] mm/writeback: Use __set_page_dirty in __set_page_dirty_nobuffers Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 61/96] mm/writeback: Add __folio_mark_dirty Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 62/96] mm/writeback: Add filemap_dirty_folio Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 63/96] mm/writeback: Add folio_account_cleaned Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 64/96] mm/writeback: Add folio_cancel_dirty Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 65/96] mm/writeback: Add folio_clear_dirty_for_io Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 66/96] mm/writeback: Add folio_account_redirty Matthew Wilcox (Oracle)
2021-05-05 15:05 ` [PATCH v9 67/96] mm/writeback: Add folio_redirty_for_writepage Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 68/96] mm/filemap: Add i_blocks_per_folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 69/96] mm/filemap: Add folio_mkwrite_check_truncate Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 70/96] mm/filemap: Add readahead_folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 71/96] block: Add bio_add_folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 72/96] block: Add bio_for_each_folio_all Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 73/96] mm/lru: Add folio_lru and folio_is_file_lru Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 74/96] mm/workingset: Convert workingset_refault to take a folio Matthew Wilcox (Oracle)
2021-05-05 20:17   ` kernel test robot
2021-05-05 20:57     ` Matthew Wilcox
2021-05-05 15:06 ` [PATCH v9 75/96] mm/lru: Add folio_add_lru Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 76/96] mm/page_alloc: Add __alloc_folio, __alloc_folio_node and alloc_folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 77/96] mm/filemap: Add filemap_alloc_folio Matthew Wilcox (Oracle)
2021-05-06  0:00   ` kernel test robot
2021-05-06  2:28     ` Matthew Wilcox
2021-05-05 15:06 ` Matthew Wilcox (Oracle) [this message]
2021-05-05 15:06 ` [PATCH v9 79/96] mm/filemap: Convert mapping_get_entry to return a folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 80/96] mm/filemap: Add filemap_get_folio and find_get_folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 81/96] mm/filemap: Add filemap_get_stable_folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 82/96] iomap: Convert to_iomap_page to take a folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 83/96] iomap: Convert iomap_page_create " Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 84/96] iomap: Convert iomap_page_release " Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 85/96] iomap: Convert iomap_releasepage to use " Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 86/96] iomap: Convert iomap_invalidatepage " Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 87/96] iomap: Pass the iomap_page into iomap_set_range_uptodate Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 88/96] iomap: Use folio offsets instead of page offsets Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 89/96] iomap: Convert bio completions to use folios Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 90/96] iomap: Convert readahead and readpage to use a folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 91/96] iomap: Convert iomap_page_mkwrite " Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 92/96] iomap: Convert iomap_write_begin and iomap_write_end to folios Matthew Wilcox (Oracle)
2021-05-05 21:36   ` kernel test robot
2021-05-05 22:10     ` Matthew Wilcox
2021-05-05 15:06 ` [PATCH v9 93/96] iomap: Convert iomap_read_inline_data to take a folio Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 94/96] iomap: Convert iomap_write_end_inline " Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 95/96] iomap: Convert iomap_add_to_ioend " Matthew Wilcox (Oracle)
2021-05-05 15:06 ` [PATCH v9 96/96] iomap: Convert iomap_do_writepage to use " Matthew Wilcox (Oracle)

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210505150628.111735-79-willy@infradead.org \
    --to=willy@infradead.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --subject='Re: [PATCH v9 78/96] mm/filemap: Add folio_add_to_page_cache' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).