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| author | Josef Bacik <josef@redhat.com> | 2011-08-01 18:37:36 (GMT) |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2011-08-01 18:37:36 (GMT) |
| commit | 0d10ee2e6deb5c8409ae65b970846344897d5e4e (patch) | |
| tree | 7072161df34ced133b41cc99e5f868bc8e55a018 /fs | |
| parent | 341d14f161a475ebdbc9adff1f7e681e1185dee9 (diff) | |
| download | linux-0d10ee2e6deb5c8409ae65b970846344897d5e4e.tar.xz | |
Btrfs: don't call writepages from within write_full_page
When doing a writepage we call writepages to try and write out any other dirty
pages in the area. This could cause problems where we commit a transaction and
then have somebody else dirtying metadata in the area as we could end up writing
out a lot more than we care about, which could cause latency on anybody who is
waiting for the transaction to completely finish committing. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/extent_io.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index a59ebc6..8491712 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2502,7 +2502,6 @@ int extent_write_full_page(struct extent_io_tree *tree, struct page *page, struct writeback_control *wbc) { int ret; - struct address_space *mapping = page->mapping; struct extent_page_data epd = { .bio = NULL, .tree = tree, @@ -2510,18 +2509,9 @@ int extent_write_full_page(struct extent_io_tree *tree, struct page *page, .extent_locked = 0, .sync_io = wbc->sync_mode == WB_SYNC_ALL, }; - struct writeback_control wbc_writepages = { - .sync_mode = wbc->sync_mode, - .older_than_this = NULL, - .nr_to_write = 64, - .range_start = page_offset(page) + PAGE_CACHE_SIZE, - .range_end = (loff_t)-1, - }; ret = __extent_writepage(page, wbc, &epd); - extent_write_cache_pages(tree, mapping, &wbc_writepages, - __extent_writepage, &epd, flush_write_bio); flush_epd_write_bio(&epd); return ret; } |