diff options
| -rw-r--r-- | fs/buffer.c | 5 | ||||
| -rw-r--r-- | fs/mpage.c | 7 | ||||
| -rw-r--r-- | fs/super.c | 3 | ||||
| -rw-r--r-- | mm/filemap.c | 11 | ||||
| -rw-r--r-- | mm/truncate.c | 6 |
5 files changed, 32 insertions, 0 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index a08bb8e..de05703 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -41,6 +41,7 @@ #include <linux/bitops.h> #include <linux/mpage.h> #include <linux/bit_spinlock.h> +#include <linux/cleancache.h> static int fsync_buffers_list(spinlock_t *lock, struct list_head *list); @@ -269,6 +270,10 @@ void invalidate_bdev(struct block_device *bdev) invalidate_bh_lrus(); lru_add_drain_all(); /* make sure all lru add caches are flushed */ invalidate_mapping_pages(mapping, 0, -1); + /* 99% of the time, we don't need to flush the cleancache on the bdev. + * But, for the strange corners, lets be cautious + */ + cleancache_flush_inode(mapping); } EXPORT_SYMBOL(invalidate_bdev); @@ -27,6 +27,7 @@ #include <linux/writeback.h> #include <linux/backing-dev.h> #include <linux/pagevec.h> +#include <linux/cleancache.h> /* * I/O completion handler for multipage BIOs. @@ -271,6 +272,12 @@ do_mpage_readpage(struct bio *bio, struct page *page, unsigned nr_pages, SetPageMappedToDisk(page); } + if (fully_mapped && blocks_per_page == 1 && !PageUptodate(page) && + cleancache_get_page(page) == 0) { + SetPageUptodate(page); + goto confused; + } + /* * This page will go to BIO. Do we need to send this BIO off first? */ @@ -31,6 +31,7 @@ #include <linux/mutex.h> #include <linux/backing-dev.h> #include <linux/rculist_bl.h> +#include <linux/cleancache.h> #include "internal.h" @@ -112,6 +113,7 @@ static struct super_block *alloc_super(struct file_system_type *type) s->s_maxbytes = MAX_NON_LFS; s->s_op = &default_op; s->s_time_gran = 1000000000; + s->cleancache_poolid = -1; } out: return s; @@ -177,6 +179,7 @@ void deactivate_locked_super(struct super_block *s) { struct file_system_type *fs = s->s_type; if (atomic_dec_and_test(&s->s_active)) { + cleancache_flush_fs(s); fs->kill_sb(s); /* * We need to call rcu_barrier so all the delayed rcu free diff --git a/mm/filemap.c b/mm/filemap.c index c641edf..ec6fa2d 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -34,6 +34,7 @@ #include <linux/hardirq.h> /* for BUG_ON(!in_atomic()) only */ #include <linux/memcontrol.h> #include <linux/mm_inline.h> /* for page_is_file_cache() */ +#include <linux/cleancache.h> #include "internal.h" /* @@ -118,6 +119,16 @@ void __delete_from_page_cache(struct page *page) { struct address_space *mapping = page->mapping; + /* + * if we're uptodate, flush out into the cleancache, otherwise + * invalidate any existing cleancache entries. We can't leave + * stale data around in the cleancache once our page is gone + */ + if (PageUptodate(page) && PageMappedToDisk(page)) + cleancache_put_page(page); + else + cleancache_flush_page(mapping, page); + radix_tree_delete(&mapping->page_tree, page->index); page->mapping = NULL; mapping->nrpages--; diff --git a/mm/truncate.c b/mm/truncate.c index a956675..3a29a61 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -19,6 +19,7 @@ #include <linux/task_io_accounting_ops.h> #include <linux/buffer_head.h> /* grr. try_to_release_page, do_invalidatepage */ +#include <linux/cleancache.h> #include "internal.h" @@ -51,6 +52,7 @@ void do_invalidatepage(struct page *page, unsigned long offset) static inline void truncate_partial_page(struct page *page, unsigned partial) { zero_user_segment(page, partial, PAGE_CACHE_SIZE); + cleancache_flush_page(page->mapping, page); if (page_has_private(page)) do_invalidatepage(page, partial); } @@ -214,6 +216,7 @@ void truncate_inode_pages_range(struct address_space *mapping, pgoff_t next; int i; + cleancache_flush_inode(mapping); if (mapping->nrpages == 0) return; @@ -291,6 +294,7 @@ void truncate_inode_pages_range(struct address_space *mapping, pagevec_release(&pvec); mem_cgroup_uncharge_end(); } + cleancache_flush_inode(mapping); } EXPORT_SYMBOL(truncate_inode_pages_range); @@ -440,6 +444,7 @@ int invalidate_inode_pages2_range(struct address_space *mapping, int did_range_unmap = 0; int wrapped = 0; + cleancache_flush_inode(mapping); pagevec_init(&pvec, 0); next = start; while (next <= end && !wrapped && @@ -498,6 +503,7 @@ int invalidate_inode_pages2_range(struct address_space *mapping, mem_cgroup_uncharge_end(); cond_resched(); } + cleancache_flush_inode(mapping); return ret; } EXPORT_SYMBOL_GPL(invalidate_inode_pages2_range); |
