diff options
Diffstat (limited to 'mm/page-writeback.c')
| -rw-r--r-- | mm/page-writeback.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 7d1010453fb9..9f61dfec6a1f 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -270,7 +270,7 @@ static void wb_min_max_ratio(struct bdi_writeback *wb, * node_dirtyable_memory - number of dirtyable pages in a node * @pgdat: the node * - * Returns the node's number of pages potentially available for dirty + * Return: the node's number of pages potentially available for dirty * page cache. This is the base value for the per-node dirty limits. */ static unsigned long node_dirtyable_memory(struct pglist_data *pgdat) @@ -355,7 +355,7 @@ static unsigned long highmem_dirtyable_memory(unsigned long total) /** * global_dirtyable_memory - number of globally dirtyable pages * - * Returns the global number of pages potentially available for dirty + * Return: the global number of pages potentially available for dirty * page cache. This is the base value for the global dirty limits. */ static unsigned long global_dirtyable_memory(void) @@ -470,7 +470,7 @@ void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty) * node_dirty_limit - maximum number of dirty pages allowed in a node * @pgdat: the node * - * Returns the maximum number of dirty pages allowed in a node, based + * Return: the maximum number of dirty pages allowed in a node, based * on the node's dirtyable memory. */ static unsigned long node_dirty_limit(struct pglist_data *pgdat) @@ -495,7 +495,7 @@ static unsigned long node_dirty_limit(struct pglist_data *pgdat) * node_dirty_ok - tells whether a node is within its dirty limits * @pgdat: the node to check * - * Returns %true when the dirty pages in @pgdat are within the node's + * Return: %true when the dirty pages in @pgdat are within the node's * dirty limit, %false if the limit is exceeded. */ bool node_dirty_ok(struct pglist_data *pgdat) @@ -743,9 +743,6 @@ static void mdtc_calc_avail(struct dirty_throttle_control *mdtc, * __wb_calc_thresh - @wb's share of dirty throttling threshold * @dtc: dirty_throttle_context of interest * - * Returns @wb's dirty limit in pages. The term "dirty" in the context of - * dirty balancing includes all PG_dirty, PG_writeback and NFS unstable pages. - * * Note that balance_dirty_pages() will only seriously take it as a hard limit * when sleeping max_pause per page is not enough to keep the dirty pages under * control. For example, when the device is completely stalled due to some error @@ -759,6 +756,9 @@ static void mdtc_calc_avail(struct dirty_throttle_control *mdtc, * * The wb's share of dirty limit will be adapting to its throughput and * bounded by the bdi->min_ratio and/or bdi->max_ratio parameters, if set. + * + * Return: @wb's dirty limit in pages. The term "dirty" in the context of + * dirty balancing includes all PG_dirty, PG_writeback and NFS unstable pages. */ static unsigned long __wb_calc_thresh(struct dirty_throttle_control *dtc) { @@ -1918,7 +1918,9 @@ EXPORT_SYMBOL(balance_dirty_pages_ratelimited); * @wb: bdi_writeback of interest * * Determines whether background writeback should keep writing @wb or it's - * clean enough. Returns %true if writeback should continue. + * clean enough. + * + * Return: %true if writeback should continue. */ bool wb_over_bg_thresh(struct bdi_writeback *wb) { @@ -2147,6 +2149,8 @@ EXPORT_SYMBOL(tag_pages_for_writeback); * lock/page writeback access order inversion - we should only ever lock * multiple pages in ascending page->index order, and looping back to the start * of the file violates that rule and causes deadlocks. + * + * Return: %0 on success, negative error code otherwise */ int write_cache_pages(struct address_space *mapping, struct writeback_control *wbc, writepage_t writepage, @@ -2305,6 +2309,8 @@ static int __writepage(struct page *page, struct writeback_control *wbc, * * This is a library function, which implements the writepages() * address_space_operation. + * + * Return: %0 on success, negative error code otherwise */ int generic_writepages(struct address_space *mapping, struct writeback_control *wbc) @@ -2351,6 +2357,8 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc) * * Note that the mapping's AS_EIO/AS_ENOSPC flags will be cleared when this * function returns. + * + * Return: %0 on success, negative error code otherwise */ int write_one_page(struct page *page) { |