From patchwork Fri Nov 17 21:58:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 13459746 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="lcFWdYps" Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 97D7FD4B for ; Fri, 17 Nov 2023 13:58:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:In-Reply-To:References; bh=JHJBO2pq1YeC3GidXuh5z3ij43YgBdJhBYYAgITXKgk=; b=lcFWdYpsMEipX3C6X7AmRa5DmY YvjAxA5VXNiGmZcJkU9/L+d6qdptHoGbGK4x61mZo90hcp7p40bndmlGZisZuNbSih4siqVtBca3v d9HZ5sg+aWjnZnLksjfQ4wJdAZ5R621Sv+BjGFci9oymE8KC47kLuKhvZYosWnVQtFkA8IIfA6pQM viYaVqfdCWDxzg7Tiqh69u2Xh/dF23/fj7wQUYD38Zv/5MqXs6OpYywCOfMHiiKp/zZR53/3yTDLn JtJR0ZwuGkC/HCxvUcsHL/ilIqqfDim/tPgiL5mQ/1PNABYwT/j0W2km0fYZhdBDIaLeqoXIhkOGN OcyjWVhQ==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1r46r3-00Bq71-F5; Fri, 17 Nov 2023 21:58:25 +0000 From: "Matthew Wilcox (Oracle)" To: Christian Brauner Cc: "Matthew Wilcox (Oracle)" , Al Viro , "Darrick J. Wong" , linux-fsdevel@vger.kernel.org Subject: [PATCH] fs: Rename mapping private members Date: Fri, 17 Nov 2023 21:58:23 +0000 Message-Id: <20231117215823.2821906-1-willy@infradead.org> X-Mailer: git-send-email 2.37.1 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 It is hard to find where mapping->private_lock, mapping->private_list and mapping->private_data are used, due to private_XXX being a relatively common name for variables and structure members in the kernel. To fit with other members of struct address_space, rename them all to have an i_ prefix. Tested with an allmodconfig build. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Josef Bacik Acked-by: Darrick J. Wong --- fs/aio.c | 16 +++--- fs/btrfs/extent_io.c | 52 ++++++++++---------- fs/btrfs/subpage.c | 4 +- fs/buffer.c | 108 ++++++++++++++++++++--------------------- fs/ext4/inode.c | 4 +- fs/gfs2/glock.c | 2 +- fs/gfs2/ops_fstype.c | 2 +- fs/hugetlbfs/inode.c | 4 +- fs/inode.c | 8 +-- fs/nfs/write.c | 12 ++--- fs/nilfs2/inode.c | 4 +- fs/ntfs/aops.c | 10 ++-- include/linux/fs.h | 12 ++--- mm/hugetlb.c | 2 +- mm/migrate.c | 6 +-- virt/kvm/guest_memfd.c | 6 +-- 16 files changed, 126 insertions(+), 126 deletions(-) diff --git a/fs/aio.c b/fs/aio.c index f8589caef9c1..d02842156b35 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -266,7 +266,7 @@ static struct file *aio_private_file(struct kioctx *ctx, loff_t nr_pages) return ERR_CAST(inode); inode->i_mapping->a_ops = &aio_ctx_aops; - inode->i_mapping->private_data = ctx; + inode->i_mapping->i_private_data = ctx; inode->i_size = PAGE_SIZE * nr_pages; file = alloc_file_pseudo(inode, aio_mnt, "[aio]", @@ -316,10 +316,10 @@ static void put_aio_ring_file(struct kioctx *ctx) /* Prevent further access to the kioctx from migratepages */ i_mapping = aio_ring_file->f_mapping; - spin_lock(&i_mapping->private_lock); - i_mapping->private_data = NULL; + spin_lock(&i_mapping->i_private_lock); + i_mapping->i_private_data = NULL; ctx->aio_ring_file = NULL; - spin_unlock(&i_mapping->private_lock); + spin_unlock(&i_mapping->i_private_lock); fput(aio_ring_file); } @@ -422,9 +422,9 @@ static int aio_migrate_folio(struct address_space *mapping, struct folio *dst, rc = 0; - /* mapping->private_lock here protects against the kioctx teardown. */ - spin_lock(&mapping->private_lock); - ctx = mapping->private_data; + /* mapping->i_private_lock here protects against the kioctx teardown. */ + spin_lock(&mapping->i_private_lock); + ctx = mapping->i_private_data; if (!ctx) { rc = -EINVAL; goto out; @@ -476,7 +476,7 @@ static int aio_migrate_folio(struct address_space *mapping, struct folio *dst, out_unlock: mutex_unlock(&ctx->ring_lock); out: - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); return rc; } #else diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 03cef28d9e37..3431a53bf3fd 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -870,7 +870,7 @@ static int attach_extent_buffer_page(struct extent_buffer *eb, * will not race with any other ebs. */ if (page->mapping) - lockdep_assert_held(&page->mapping->private_lock); + lockdep_assert_held(&page->mapping->i_private_lock); if (fs_info->nodesize >= PAGE_SIZE) { if (!PagePrivate(page)) @@ -1736,16 +1736,16 @@ static int submit_eb_subpage(struct page *page, struct writeback_control *wbc) * Take private lock to ensure the subpage won't be detached * in the meantime. */ - spin_lock(&page->mapping->private_lock); + spin_lock(&page->mapping->i_private_lock); if (!PagePrivate(page)) { - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); break; } spin_lock_irqsave(&subpage->lock, flags); if (!test_bit(bit_start + fs_info->subpage_info->dirty_offset, subpage->bitmaps)) { spin_unlock_irqrestore(&subpage->lock, flags); - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); bit_start++; continue; } @@ -1759,7 +1759,7 @@ static int submit_eb_subpage(struct page *page, struct writeback_control *wbc) */ eb = find_extent_buffer_nolock(fs_info, start); spin_unlock_irqrestore(&subpage->lock, flags); - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); /* * The eb has already reached 0 refs thus find_extent_buffer() @@ -1811,9 +1811,9 @@ static int submit_eb_page(struct page *page, struct btrfs_eb_write_context *ctx) if (btrfs_sb(page->mapping->host->i_sb)->nodesize < PAGE_SIZE) return submit_eb_subpage(page, wbc); - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); if (!PagePrivate(page)) { - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); return 0; } @@ -1824,16 +1824,16 @@ static int submit_eb_page(struct page *page, struct btrfs_eb_write_context *ctx) * crashing the machine for something we can survive anyway. */ if (WARN_ON(!eb)) { - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); return 0; } if (eb == ctx->eb) { - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); return 0; } ret = atomic_inc_not_zero(&eb->refs); - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); if (!ret) return 0; @@ -3056,7 +3056,7 @@ static bool page_range_has_eb(struct btrfs_fs_info *fs_info, struct page *page) { struct btrfs_subpage *subpage; - lockdep_assert_held(&page->mapping->private_lock); + lockdep_assert_held(&page->mapping->i_private_lock); if (PagePrivate(page)) { subpage = (struct btrfs_subpage *)page->private; @@ -3079,14 +3079,14 @@ static void detach_extent_buffer_page(struct extent_buffer *eb, struct page *pag /* * For mapped eb, we're going to change the page private, which should - * be done under the private_lock. + * be done under the i_private_lock. */ if (mapped) - spin_lock(&page->mapping->private_lock); + spin_lock(&page->mapping->i_private_lock); if (!PagePrivate(page)) { if (mapped) - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); return; } @@ -3110,7 +3110,7 @@ static void detach_extent_buffer_page(struct extent_buffer *eb, struct page *pag detach_page_private(page); } if (mapped) - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); return; } @@ -3133,7 +3133,7 @@ static void detach_extent_buffer_page(struct extent_buffer *eb, struct page *pag if (!page_range_has_eb(fs_info, page)) btrfs_detach_subpage(fs_info, page); - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); } /* Release all pages attached to the extent buffer */ @@ -3514,7 +3514,7 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info, /* * Preallocate page->private for subpage case, so that we won't - * allocate memory with private_lock nor page lock hold. + * allocate memory with i_private_lock nor page lock hold. * * The memory will be freed by attach_extent_buffer_page() or freed * manually if we exit earlier. @@ -3535,10 +3535,10 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info, goto free_eb; } - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); exists = grab_extent_buffer(fs_info, p); if (exists) { - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); unlock_page(p); put_page(p); mark_extent_buffer_accessed(exists, p); @@ -3558,7 +3558,7 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info, * Thus needs no special handling in error path. */ btrfs_page_inc_eb_refs(fs_info, p); - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); WARN_ON(btrfs_page_test_dirty(fs_info, p, eb->start, eb->len)); eb->pages[i] = p; @@ -4563,12 +4563,12 @@ static int try_release_subpage_extent_buffer(struct page *page) * Finally to check if we have cleared page private, as if we have * released all ebs in the page, the page private should be cleared now. */ - spin_lock(&page->mapping->private_lock); + spin_lock(&page->mapping->i_private_lock); if (!PagePrivate(page)) ret = 1; else ret = 0; - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); return ret; } @@ -4584,9 +4584,9 @@ int try_release_extent_buffer(struct page *page) * We need to make sure nobody is changing page->private, as we rely on * page->private as the pointer to extent buffer. */ - spin_lock(&page->mapping->private_lock); + spin_lock(&page->mapping->i_private_lock); if (!PagePrivate(page)) { - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); return 1; } @@ -4601,10 +4601,10 @@ int try_release_extent_buffer(struct page *page) spin_lock(&eb->refs_lock); if (atomic_read(&eb->refs) != 1 || extent_buffer_under_io(eb)) { spin_unlock(&eb->refs_lock); - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); return 0; } - spin_unlock(&page->mapping->private_lock); + spin_unlock(&page->mapping->i_private_lock); /* * If tree ref isn't set then we know the ref on this eb is a real ref, diff --git a/fs/btrfs/subpage.c b/fs/btrfs/subpage.c index 1b999c6e4193..2347cf15278b 100644 --- a/fs/btrfs/subpage.c +++ b/fs/btrfs/subpage.c @@ -200,7 +200,7 @@ void btrfs_page_inc_eb_refs(const struct btrfs_fs_info *fs_info, return; ASSERT(PagePrivate(page) && page->mapping); - lockdep_assert_held(&page->mapping->private_lock); + lockdep_assert_held(&page->mapping->i_private_lock); subpage = (struct btrfs_subpage *)page->private; atomic_inc(&subpage->eb_refs); @@ -215,7 +215,7 @@ void btrfs_page_dec_eb_refs(const struct btrfs_fs_info *fs_info, return; ASSERT(PagePrivate(page) && page->mapping); - lockdep_assert_held(&page->mapping->private_lock); + lockdep_assert_held(&page->mapping->i_private_lock); subpage = (struct btrfs_subpage *)page->private; ASSERT(atomic_read(&subpage->eb_refs)); diff --git a/fs/buffer.c b/fs/buffer.c index 4eb44ccdc6be..f653add0aed5 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -180,11 +180,11 @@ EXPORT_SYMBOL(end_buffer_write_sync); * Various filesystems appear to want __find_get_block to be non-blocking. * But it's the page lock which protects the buffers. To get around this, * we get exclusion from try_to_free_buffers with the blockdev mapping's - * private_lock. + * i_private_lock. * - * Hack idea: for the blockdev mapping, private_lock contention + * Hack idea: for the blockdev mapping, i_private_lock contention * may be quite high. This code could TryLock the page, and if that - * succeeds, there is no need to take private_lock. + * succeeds, there is no need to take i_private_lock. */ static struct buffer_head * __find_get_block_slow(struct block_device *bdev, sector_t block) @@ -204,7 +204,7 @@ __find_get_block_slow(struct block_device *bdev, sector_t block) if (IS_ERR(folio)) goto out; - spin_lock(&bd_mapping->private_lock); + spin_lock(&bd_mapping->i_private_lock); head = folio_buffers(folio); if (!head) goto out_unlock; @@ -236,7 +236,7 @@ __find_get_block_slow(struct block_device *bdev, sector_t block) 1 << bd_inode->i_blkbits); } out_unlock: - spin_unlock(&bd_mapping->private_lock); + spin_unlock(&bd_mapping->i_private_lock); folio_put(folio); out: return ret; @@ -467,25 +467,25 @@ EXPORT_SYMBOL(mark_buffer_async_write); * * The functions mark_buffer_inode_dirty(), fsync_inode_buffers(), * inode_has_buffers() and invalidate_inode_buffers() are provided for the - * management of a list of dependent buffers at ->i_mapping->private_list. + * management of a list of dependent buffers at ->i_mapping->i_private_list. * * Locking is a little subtle: try_to_free_buffers() will remove buffers * from their controlling inode's queue when they are being freed. But * try_to_free_buffers() will be operating against the *blockdev* mapping * at the time, not against the S_ISREG file which depends on those buffers. - * So the locking for private_list is via the private_lock in the address_space + * So the locking for i_private_list is via the i_private_lock in the address_space * which backs the buffers. Which is different from the address_space * against which the buffers are listed. So for a particular address_space, - * mapping->private_lock does *not* protect mapping->private_list! In fact, - * mapping->private_list will always be protected by the backing blockdev's - * ->private_lock. + * mapping->i_private_lock does *not* protect mapping->i_private_list! In fact, + * mapping->i_private_list will always be protected by the backing blockdev's + * ->i_private_lock. * * Which introduces a requirement: all buffers on an address_space's - * ->private_list must be from the same address_space: the blockdev's. + * ->i_private_list must be from the same address_space: the blockdev's. * - * address_spaces which do not place buffers at ->private_list via these - * utility functions are free to use private_lock and private_list for - * whatever they want. The only requirement is that list_empty(private_list) + * address_spaces which do not place buffers at ->i_private_list via these + * utility functions are free to use i_private_lock and i_private_list for + * whatever they want. The only requirement is that list_empty(i_private_list) * be true at clear_inode() time. * * FIXME: clear_inode should not call invalidate_inode_buffers(). The @@ -508,7 +508,7 @@ EXPORT_SYMBOL(mark_buffer_async_write); */ /* - * The buffer's backing address_space's private_lock must be held + * The buffer's backing address_space's i_private_lock must be held */ static void __remove_assoc_queue(struct buffer_head *bh) { @@ -519,7 +519,7 @@ static void __remove_assoc_queue(struct buffer_head *bh) int inode_has_buffers(struct inode *inode) { - return !list_empty(&inode->i_data.private_list); + return !list_empty(&inode->i_data.i_private_list); } /* @@ -561,7 +561,7 @@ static int osync_buffers_list(spinlock_t *lock, struct list_head *list) * sync_mapping_buffers - write out & wait upon a mapping's "associated" buffers * @mapping: the mapping which wants those buffers written * - * Starts I/O against the buffers at mapping->private_list, and waits upon + * Starts I/O against the buffers at mapping->i_private_list, and waits upon * that I/O. * * Basically, this is a convenience function for fsync(). @@ -570,13 +570,13 @@ static int osync_buffers_list(spinlock_t *lock, struct list_head *list) */ int sync_mapping_buffers(struct address_space *mapping) { - struct address_space *buffer_mapping = mapping->private_data; + struct address_space *buffer_mapping = mapping->i_private_data; - if (buffer_mapping == NULL || list_empty(&mapping->private_list)) + if (buffer_mapping == NULL || list_empty(&mapping->i_private_list)) return 0; - return fsync_buffers_list(&buffer_mapping->private_lock, - &mapping->private_list); + return fsync_buffers_list(&buffer_mapping->i_private_lock, + &mapping->i_private_list); } EXPORT_SYMBOL(sync_mapping_buffers); @@ -673,17 +673,17 @@ void mark_buffer_dirty_inode(struct buffer_head *bh, struct inode *inode) struct address_space *buffer_mapping = bh->b_folio->mapping; mark_buffer_dirty(bh); - if (!mapping->private_data) { - mapping->private_data = buffer_mapping; + if (!mapping->i_private_data) { + mapping->i_private_data = buffer_mapping; } else { - BUG_ON(mapping->private_data != buffer_mapping); + BUG_ON(mapping->i_private_data != buffer_mapping); } if (!bh->b_assoc_map) { - spin_lock(&buffer_mapping->private_lock); + spin_lock(&buffer_mapping->i_private_lock); list_move_tail(&bh->b_assoc_buffers, - &mapping->private_list); + &mapping->i_private_list); bh->b_assoc_map = mapping; - spin_unlock(&buffer_mapping->private_lock); + spin_unlock(&buffer_mapping->i_private_lock); } } EXPORT_SYMBOL(mark_buffer_dirty_inode); @@ -706,7 +706,7 @@ EXPORT_SYMBOL(mark_buffer_dirty_inode); * bit, see a bunch of clean buffers and we'd end up with dirty buffers/clean * page on the dirty page list. * - * We use private_lock to lock against try_to_free_buffers while using the + * We use i_private_lock to lock against try_to_free_buffers while using the * page's buffer list. Also use this to protect against clean buffers being * added to the page after it was set dirty. * @@ -718,7 +718,7 @@ bool block_dirty_folio(struct address_space *mapping, struct folio *folio) struct buffer_head *head; bool newly_dirty; - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); head = folio_buffers(folio); if (head) { struct buffer_head *bh = head; @@ -734,7 +734,7 @@ bool block_dirty_folio(struct address_space *mapping, struct folio *folio) */ folio_memcg_lock(folio); newly_dirty = !folio_test_set_dirty(folio); - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); if (newly_dirty) __folio_mark_dirty(folio, mapping, 1); @@ -827,7 +827,7 @@ static int fsync_buffers_list(spinlock_t *lock, struct list_head *list) smp_mb(); if (buffer_dirty(bh)) { list_add(&bh->b_assoc_buffers, - &mapping->private_list); + &mapping->i_private_list); bh->b_assoc_map = mapping; } spin_unlock(lock); @@ -851,7 +851,7 @@ static int fsync_buffers_list(spinlock_t *lock, struct list_head *list) * probably unmounting the fs, but that doesn't mean we have already * done a sync(). Just drop the buffers from the inode list. * - * NOTE: we take the inode's blockdev's mapping's private_lock. Which + * NOTE: we take the inode's blockdev's mapping's i_private_lock. Which * assumes that all the buffers are against the blockdev. Not true * for reiserfs. */ @@ -859,13 +859,13 @@ void invalidate_inode_buffers(struct inode *inode) { if (inode_has_buffers(inode)) { struct address_space *mapping = &inode->i_data; - struct list_head *list = &mapping->private_list; - struct address_space *buffer_mapping = mapping->private_data; + struct list_head *list = &mapping->i_private_list; + struct address_space *buffer_mapping = mapping->i_private_data; - spin_lock(&buffer_mapping->private_lock); + spin_lock(&buffer_mapping->i_private_lock); while (!list_empty(list)) __remove_assoc_queue(BH_ENTRY(list->next)); - spin_unlock(&buffer_mapping->private_lock); + spin_unlock(&buffer_mapping->i_private_lock); } } EXPORT_SYMBOL(invalidate_inode_buffers); @@ -882,10 +882,10 @@ int remove_inode_buffers(struct inode *inode) if (inode_has_buffers(inode)) { struct address_space *mapping = &inode->i_data; - struct list_head *list = &mapping->private_list; - struct address_space *buffer_mapping = mapping->private_data; + struct list_head *list = &mapping->i_private_list; + struct address_space *buffer_mapping = mapping->i_private_data; - spin_lock(&buffer_mapping->private_lock); + spin_lock(&buffer_mapping->i_private_lock); while (!list_empty(list)) { struct buffer_head *bh = BH_ENTRY(list->next); if (buffer_dirty(bh)) { @@ -894,7 +894,7 @@ int remove_inode_buffers(struct inode *inode) } __remove_assoc_queue(bh); } - spin_unlock(&buffer_mapping->private_lock); + spin_unlock(&buffer_mapping->i_private_lock); } return ret; } @@ -1067,10 +1067,10 @@ static bool grow_dev_folio(struct block_device *bdev, sector_t block, * lock to be atomic wrt __find_get_block(), which does not * run under the folio lock. */ - spin_lock(&inode->i_mapping->private_lock); + spin_lock(&inode->i_mapping->i_private_lock); link_dev_buffers(folio, bh); end_block = folio_init_buffers(folio, bdev, size); - spin_unlock(&inode->i_mapping->private_lock); + spin_unlock(&inode->i_mapping->i_private_lock); unlock: folio_unlock(folio); folio_put(folio); @@ -1162,7 +1162,7 @@ __getblk_slow(struct block_device *bdev, sector_t block, * and then attach the address_space's inode to its superblock's dirty * inode list. * - * mark_buffer_dirty() is atomic. It takes bh->b_folio->mapping->private_lock, + * mark_buffer_dirty() is atomic. It takes bh->b_folio->mapping->i_private_lock, * i_pages lock and mapping->host->i_lock. */ void mark_buffer_dirty(struct buffer_head *bh) @@ -1240,10 +1240,10 @@ void __bforget(struct buffer_head *bh) if (bh->b_assoc_map) { struct address_space *buffer_mapping = bh->b_folio->mapping; - spin_lock(&buffer_mapping->private_lock); + spin_lock(&buffer_mapping->i_private_lock); list_del_init(&bh->b_assoc_buffers); bh->b_assoc_map = NULL; - spin_unlock(&buffer_mapping->private_lock); + spin_unlock(&buffer_mapping->i_private_lock); } __brelse(bh); } @@ -1632,7 +1632,7 @@ EXPORT_SYMBOL(block_invalidate_folio); /* * We attach and possibly dirty the buffers atomically wrt - * block_dirty_folio() via private_lock. try_to_free_buffers + * block_dirty_folio() via i_private_lock. try_to_free_buffers * is already excluded via the folio lock. */ struct buffer_head *create_empty_buffers(struct folio *folio, @@ -1650,7 +1650,7 @@ struct buffer_head *create_empty_buffers(struct folio *folio, } while (bh); tail->b_this_page = head; - spin_lock(&folio->mapping->private_lock); + spin_lock(&folio->mapping->i_private_lock); if (folio_test_uptodate(folio) || folio_test_dirty(folio)) { bh = head; do { @@ -1662,7 +1662,7 @@ struct buffer_head *create_empty_buffers(struct folio *folio, } while (bh != head); } folio_attach_private(folio, head); - spin_unlock(&folio->mapping->private_lock); + spin_unlock(&folio->mapping->i_private_lock); return head; } @@ -1709,7 +1709,7 @@ void clean_bdev_aliases(struct block_device *bdev, sector_t block, sector_t len) if (!folio_buffers(folio)) continue; /* - * We use folio lock instead of bd_mapping->private_lock + * We use folio lock instead of bd_mapping->i_private_lock * to pin buffers here since we can afford to sleep and * it scales better than a global spinlock lock. */ @@ -2859,7 +2859,7 @@ EXPORT_SYMBOL(sync_dirty_buffer); * are unused, and releases them if so. * * Exclusion against try_to_free_buffers may be obtained by either - * locking the folio or by holding its mapping's private_lock. + * locking the folio or by holding its mapping's i_private_lock. * * If the folio is dirty but all the buffers are clean then we need to * be sure to mark the folio clean as well. This is because the folio @@ -2870,7 +2870,7 @@ EXPORT_SYMBOL(sync_dirty_buffer); * The same applies to regular filesystem folios: if all the buffers are * clean then we set the folio clean and proceed. To do that, we require * total exclusion from block_dirty_folio(). That is obtained with - * private_lock. + * i_private_lock. * * try_to_free_buffers() is non-blocking. */ @@ -2922,7 +2922,7 @@ bool try_to_free_buffers(struct folio *folio) goto out; } - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); ret = drop_buffers(folio, &buffers_to_free); /* @@ -2935,13 +2935,13 @@ bool try_to_free_buffers(struct folio *folio) * the folio's buffers clean. We discover that here and clean * the folio also. * - * private_lock must be held over this entire operation in order + * i_private_lock must be held over this entire operation in order * to synchronise against block_dirty_folio and prevent the * dirty bit from being lost. */ if (ret) folio_cancel_dirty(folio); - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); out: if (buffers_to_free) { struct buffer_head *bh = buffers_to_free; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 61277f7f8722..0558c8c986d4 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1261,7 +1261,7 @@ static int write_end_fn(handle_t *handle, struct inode *inode, * We need to pick up the new inode size which generic_commit_write gave us * `file' can be NULL - eg, when called from page_symlink(). * - * ext4 never places buffers on inode->i_mapping->private_list. metadata + * ext4 never places buffers on inode->i_mapping->i_private_list. metadata * buffers are managed internally. */ static int ext4_write_end(struct file *file, @@ -3213,7 +3213,7 @@ static bool ext4_inode_datasync_dirty(struct inode *inode) } /* Any metadata buffers to write? */ - if (!list_empty(&inode->i_mapping->private_list)) + if (!list_empty(&inode->i_mapping->i_private_list)) return true; return inode->i_state & I_DIRTY_DATASYNC; } diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 2cb65f76eec8..f28c67181230 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -1230,7 +1230,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, mapping->host = s->s_bdev->bd_inode; mapping->flags = 0; mapping_set_gfp_mask(mapping, GFP_NOFS); - mapping->private_data = NULL; + mapping->i_private_data = NULL; mapping->writeback_index = 0; } diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index b108c5d26839..00ce89bdf32c 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -117,7 +117,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) mapping->host = sb->s_bdev->bd_inode; mapping->flags = 0; mapping_set_gfp_mask(mapping, GFP_NOFS); - mapping->private_data = NULL; + mapping->i_private_data = NULL; mapping->writeback_index = 0; spin_lock_init(&sdp->sd_log_lock); diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index f757d4f7ad98..05609ab15cbc 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -686,7 +686,7 @@ static void hugetlbfs_evict_inode(struct inode *inode) * at inode creation time. If this is a device special inode, * i_mapping may not point to the original address space. */ - resv_map = (struct resv_map *)(&inode->i_data)->private_data; + resv_map = (struct resv_map *)(&inode->i_data)->i_private_data; /* Only regular and link inodes have associated reserve maps */ if (resv_map) resv_map_release(&resv_map->refs); @@ -1000,7 +1000,7 @@ static struct inode *hugetlbfs_get_inode(struct super_block *sb, &hugetlbfs_i_mmap_rwsem_key); inode->i_mapping->a_ops = &hugetlbfs_aops; simple_inode_init_ts(inode); - inode->i_mapping->private_data = resv_map; + inode->i_mapping->i_private_data = resv_map; info->seals = F_SEAL_SEAL; switch (mode & S_IFMT) { default: diff --git a/fs/inode.c b/fs/inode.c index edcd8a61975f..788aa0aa542b 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -209,7 +209,7 @@ int inode_init_always(struct super_block *sb, struct inode *inode) atomic_set(&mapping->nr_thps, 0); #endif mapping_set_gfp_mask(mapping, GFP_HIGHUSER_MOVABLE); - mapping->private_data = NULL; + mapping->i_private_data = NULL; mapping->writeback_index = 0; init_rwsem(&mapping->invalidate_lock); lockdep_set_class_and_name(&mapping->invalidate_lock, @@ -396,8 +396,8 @@ static void __address_space_init_once(struct address_space *mapping) { xa_init_flags(&mapping->i_pages, XA_FLAGS_LOCK_IRQ | XA_FLAGS_ACCOUNT); init_rwsem(&mapping->i_mmap_rwsem); - INIT_LIST_HEAD(&mapping->private_list); - spin_lock_init(&mapping->private_lock); + INIT_LIST_HEAD(&mapping->i_private_list); + spin_lock_init(&mapping->i_private_lock); mapping->i_mmap = RB_ROOT_CACHED; } @@ -618,7 +618,7 @@ void clear_inode(struct inode *inode) * nor even WARN_ON(!mapping_empty). */ xa_unlock_irq(&inode->i_data.i_pages); - BUG_ON(!list_empty(&inode->i_data.private_list)); + BUG_ON(!list_empty(&inode->i_data.i_private_list)); BUG_ON(!(inode->i_state & I_FREEING)); BUG_ON(inode->i_state & I_CLEAR); BUG_ON(!list_empty(&inode->i_wb_list)); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index b664caea8b4e..7248705faef4 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -192,13 +192,13 @@ static struct nfs_page *nfs_folio_find_private_request(struct folio *folio) if (!folio_test_private(folio)) return NULL; - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); req = nfs_folio_private_request(folio); if (req) { WARN_ON_ONCE(req->wb_head != req); kref_get(&req->wb_kref); } - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); return req; } @@ -769,13 +769,13 @@ static void nfs_inode_add_request(struct nfs_page *req) * Swap-space should not get truncated. Hence no need to plug the race * with invalidate/truncate. */ - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); if (likely(!folio_test_swapcache(folio))) { set_bit(PG_MAPPED, &req->wb_flags); folio_set_private(folio); folio->private = req; } - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); atomic_long_inc(&nfsi->nrequests); /* this a head request for a page group - mark it as having an * extra reference so sub groups can follow suit. @@ -796,13 +796,13 @@ static void nfs_inode_remove_request(struct nfs_page *req) struct folio *folio = nfs_page_to_folio(req->wb_head); struct address_space *mapping = folio_file_mapping(folio); - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); if (likely(folio && !folio_test_swapcache(folio))) { folio->private = NULL; folio_clear_private(folio); clear_bit(PG_MAPPED, &req->wb_head->wb_flags); } - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); } if (test_and_clear_bit(PG_INODE_REF, &req->wb_flags)) { diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 8fe784f62720..9c334c722fc1 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -215,7 +215,7 @@ static bool nilfs_dirty_folio(struct address_space *mapping, /* * The page may not be locked, eg if called from try_to_unmap_one() */ - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); head = folio_buffers(folio); if (head) { struct buffer_head *bh = head; @@ -231,7 +231,7 @@ static bool nilfs_dirty_folio(struct address_space *mapping, } else if (ret) { nr_dirty = 1 << (folio_shift(folio) - inode->i_blkbits); } - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); if (nr_dirty) nilfs_set_file_dirty(inode, nr_dirty); diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c index 71e31e789b29..548f3b51aa5f 100644 --- a/fs/ntfs/aops.c +++ b/fs/ntfs/aops.c @@ -1690,7 +1690,7 @@ const struct address_space_operations ntfs_mst_aops = { * * If the page does not have buffers, we create them and set them uptodate. * The page may not be locked which is why we need to handle the buffers under - * the mapping->private_lock. Once the buffers are marked dirty we no longer + * the mapping->i_private_lock. Once the buffers are marked dirty we no longer * need the lock since try_to_free_buffers() does not free dirty buffers. */ void mark_ntfs_record_dirty(struct page *page, const unsigned int ofs) { @@ -1702,11 +1702,11 @@ void mark_ntfs_record_dirty(struct page *page, const unsigned int ofs) { BUG_ON(!PageUptodate(page)); end = ofs + ni->itype.index.block_size; bh_size = VFS_I(ni)->i_sb->s_blocksize; - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); if (unlikely(!page_has_buffers(page))) { - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); bh = head = alloc_page_buffers(page, bh_size, true); - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); if (likely(!page_has_buffers(page))) { struct buffer_head *tail; @@ -1730,7 +1730,7 @@ void mark_ntfs_record_dirty(struct page *page, const unsigned int ofs) { break; set_buffer_dirty(bh); } while ((bh = bh->b_this_page) != head); - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); filemap_dirty_folio(mapping, page_folio(page)); if (unlikely(buffers_to_free)) { do { diff --git a/include/linux/fs.h b/include/linux/fs.h index b2a3f1c61c19..5969e290f3d9 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -463,9 +463,9 @@ extern const struct address_space_operations empty_aops; * @a_ops: Methods. * @flags: Error bits and flags (AS_*). * @wb_err: The most recent error which has occurred. - * @private_lock: For use by the owner of the address_space. - * @private_list: For use by the owner of the address_space. - * @private_data: For use by the owner of the address_space. + * @i_private_lock: For use by the owner of the address_space. + * @i_private_list: For use by the owner of the address_space. + * @i_private_data: For use by the owner of the address_space. */ struct address_space { struct inode *host; @@ -484,9 +484,9 @@ struct address_space { unsigned long flags; struct rw_semaphore i_mmap_rwsem; errseq_t wb_err; - spinlock_t private_lock; - struct list_head private_list; - void *private_data; + spinlock_t i_private_lock; + struct list_head i_private_list; + void * i_private_data; } __attribute__((aligned(sizeof(long)))) __randomize_layout; /* * On most architectures that alignment is already the case; but diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 6feb3e0630d1..c466551e2fd9 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1141,7 +1141,7 @@ static inline struct resv_map *inode_resv_map(struct inode *inode) * The VERY common case is inode->mapping == &inode->i_data but, * this may not be true for device special inodes. */ - return (struct resv_map *)(&inode->i_data)->private_data; + return (struct resv_map *)(&inode->i_data)->i_private_data; } static struct resv_map *vma_resv_map(struct vm_area_struct *vma) diff --git a/mm/migrate.c b/mm/migrate.c index ff0fbf95a384..d9d2b9432e81 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -746,7 +746,7 @@ static int __buffer_migrate_folio(struct address_space *mapping, recheck_buffers: busy = false; - spin_lock(&mapping->private_lock); + spin_lock(&mapping->i_private_lock); bh = head; do { if (atomic_read(&bh->b_count)) { @@ -760,7 +760,7 @@ static int __buffer_migrate_folio(struct address_space *mapping, rc = -EAGAIN; goto unlock_buffers; } - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); invalidate_bh_lrus(); invalidated = true; goto recheck_buffers; @@ -787,7 +787,7 @@ static int __buffer_migrate_folio(struct address_space *mapping, rc = MIGRATEPAGE_SUCCESS; unlock_buffers: if (check_refs) - spin_unlock(&mapping->private_lock); + spin_unlock(&mapping->i_private_lock); bh = head; do { unlock_buffer(bh); diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c index b99272396119..e2b9ef136fa4 100644 --- a/virt/kvm/guest_memfd.c +++ b/virt/kvm/guest_memfd.c @@ -97,7 +97,7 @@ static void kvm_gmem_invalidate_end(struct kvm_gmem *gmem, pgoff_t start, static long kvm_gmem_punch_hole(struct inode *inode, loff_t offset, loff_t len) { - struct list_head *gmem_list = &inode->i_mapping->private_list; + struct list_head *gmem_list = &inode->i_mapping->i_private_list; pgoff_t start = offset >> PAGE_SHIFT; pgoff_t end = (offset + len) >> PAGE_SHIFT; struct kvm_gmem *gmem; @@ -269,7 +269,7 @@ static int kvm_gmem_migrate_folio(struct address_space *mapping, static int kvm_gmem_error_page(struct address_space *mapping, struct page *page) { - struct list_head *gmem_list = &mapping->private_list; + struct list_head *gmem_list = &mapping->i_private_list; struct kvm_gmem *gmem; pgoff_t start, end; @@ -369,7 +369,7 @@ static int __kvm_gmem_create(struct kvm *kvm, loff_t size, u64 flags) kvm_get_kvm(kvm); gmem->kvm = kvm; xa_init(&gmem->bindings); - list_add(&gmem->entry, &inode->i_mapping->private_list); + list_add(&gmem->entry, &inode->i_mapping->i_private_list); fd_install(fd, file); return fd;