diff options
| -rw-r--r-- | fs/f2fs/data.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 91ff104b384..a7bb98f5831 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -909,6 +909,10 @@ repeat: page = grab_cache_page_write_begin(mapping, index, flags); if (!page) return -ENOMEM; + + /* to avoid latency during memory pressure */ + unlock_page(page); + *pagep = page; if (f2fs_has_inline_data(inode) && (pos + len) <= MAX_INLINE_DATA) @@ -920,10 +924,18 @@ repeat: f2fs_unlock_op(sbi); if (err) { - f2fs_put_page(page, 1); + f2fs_put_page(page, 0); return err; } inline_data: + lock_page(page); + if (unlikely(page->mapping != mapping)) { + f2fs_put_page(page, 1); + goto repeat; + } + + f2fs_wait_on_page_writeback(page, DATA); + if ((len == PAGE_CACHE_SIZE) || PageUptodate(page)) return 0; |