diff options
| author | Jens Axboe <jens.axboe@oracle.com> | 2009-09-26 02:07:46 +0400 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-09-26 02:10:40 +0400 |
| commit | a72bfd4dea053bb8e2233902c3f1893ef5485802 (patch) | |
| tree | 1246fc000adfee6d2874b9324eaf7383ad4413bb | |
| parent | 6d7f18f6ea3a13af95bdf507fc54d42b165e1712 (diff) | |
| download | linux-a72bfd4dea053bb8e2233902c3f1893ef5485802.tar.xz | |
writeback: pass in super_block to bdi_start_writeback()
Sometimes we only want to write pages from a specific super_block,
so allow that to be passed in.
This fixes a problem with commit 56a131dcf7ed36c3c6e36bea448b674ea85ed5bb
causing writeback on all super_blocks on a bdi, where we only really
want to sync a specific sb from writeback_inodes_sb().
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | fs/fs-writeback.c | 6 | ||||
| -rw-r--r-- | include/linux/backing-dev.h | 3 | ||||
| -rw-r--r-- | mm/page-writeback.c | 2 |
3 files changed, 7 insertions, 4 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index fb61178c86e3..9d5360c4c2af 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -250,9 +250,11 @@ static void bdi_sync_writeback(struct backing_dev_info *bdi, * completion. Caller need not hold sb s_umount semaphore. * */ -void bdi_start_writeback(struct backing_dev_info *bdi, long nr_pages) +void bdi_start_writeback(struct backing_dev_info *bdi, struct super_block *sb, + long nr_pages) { struct wb_writeback_args args = { + .sb = sb, .sync_mode = WB_SYNC_NONE, .nr_pages = nr_pages, .range_cyclic = 1, @@ -1206,7 +1208,7 @@ void writeback_inodes_sb(struct super_block *sb) nr_to_write = nr_dirty + nr_unstable + (inodes_stat.nr_inodes - inodes_stat.nr_unused); - bdi_start_writeback(sb->s_bdi, nr_to_write); + bdi_start_writeback(sb->s_bdi, sb, nr_to_write); } EXPORT_SYMBOL(writeback_inodes_sb); diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 0ee33c2e6129..b449e738533a 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -101,7 +101,8 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent, const char *fmt, ...); int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev); void bdi_unregister(struct backing_dev_info *bdi); -void bdi_start_writeback(struct backing_dev_info *bdi, long nr_pages); +void bdi_start_writeback(struct backing_dev_info *bdi, struct super_block *sb, + long nr_pages); int bdi_writeback_task(struct bdi_writeback *wb); int bdi_has_dirty_io(struct backing_dev_info *bdi); diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 69b5fbabc8bd..a3b14090b1fb 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -596,7 +596,7 @@ static void balance_dirty_pages(struct address_space *mapping, (!laptop_mode && ((global_page_state(NR_FILE_DIRTY) + global_page_state(NR_UNSTABLE_NFS)) > background_thresh))) - bdi_start_writeback(bdi, 0); + bdi_start_writeback(bdi, NULL, 0); } void set_page_dirty_balance(struct page *page, int page_mkwrite) |