From: Kundan Kumar Date: Fri, 13 Feb 2026 05:46:31 +0000 (+0530) Subject: writeback: prep helpers for dirty-limit and writeback accounting X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a235d3bcd28ba2d472f5b4cb6b259baeab75bafd;p=thirdparty%2Fkernel%2Flinux.git writeback: prep helpers for dirty-limit and writeback accounting Add helper APIs needed by filesystems to avoid poking into writeback internals. Reviewed-by: Jan Kara Reviewed-by: Jeff Layton Reviewed-by: Andreas Gruenbacher Suggested-by: Christoph Hellwig Signed-off-by: Kundan Kumar Signed-off-by: Anuj Gupta Link: https://patch.msgid.link/20260213054634.79785-2-kundan.kumar@samsung.com Signed-off-by: Christian Brauner --- diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 0c8342747cab1..5b7d12b40d5e7 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -136,6 +136,19 @@ static inline bool mapping_can_writeback(struct address_space *mapping) return inode_to_bdi(mapping->host)->capabilities & BDI_CAP_WRITEBACK; } +/* Must not be used by file systems that support cgroup writeback */ +static inline int bdi_wb_dirty_exceeded(struct backing_dev_info *bdi) +{ + return bdi->wb.dirty_exceeded; +} + +/* Must not be used by file systems that support cgroup writeback */ +static inline void bdi_wb_stat_mod(struct inode *inode, enum wb_stat_item item, + s64 amount) +{ + wb_stat_mod(&inode_to_bdi(inode)->wb, item, amount); +} + #ifdef CONFIG_CGROUP_WRITEBACK struct bdi_writeback *wb_get_lookup(struct backing_dev_info *bdi,