From: Goldwyn Rodrigues <rgold...@suse.com> Code cleanup for better understanding: needs_unlock to be called extent_locked to show state as opposed to action. Changed the variable to int, to reduce code in the critical path(code usually executed).
Signed-off-by: Goldwyn Rodrigues <rgold...@suse.com> --- fs/btrfs/file.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index f6c6754cf52d..a3d006d14683 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1590,7 +1590,7 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file, int ret = 0; bool only_release_metadata = false; bool force_page_uptodate = false; - bool need_unlock; + int extents_locked; nrptrs = min(DIV_ROUND_UP(iov_iter_count(i), PAGE_SIZE), PAGE_SIZE / (sizeof(struct page *))); @@ -1670,7 +1670,6 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file, } release_bytes = reserve_bytes; - need_unlock = false; again: /* * This is going to setup the pages array with the number of @@ -1683,16 +1682,15 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file, if (ret) break; - ret = lock_and_cleanup_extent_if_need(BTRFS_I(inode), pages, + extents_locked = lock_and_cleanup_extent_if_need( + BTRFS_I(inode), pages, num_pages, pos, write_bytes, &lockstart, &lockend, &cached_state); - if (ret < 0) { + if (extents_locked < 0) { if (ret == -EAGAIN) goto again; + ret = extents_locked; break; - } else if (ret > 0) { - need_unlock = true; - ret = 0; } copied = btrfs_copy_from_user(pos, write_bytes, pages, i); @@ -1754,7 +1752,7 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file, if (copied > 0) ret = btrfs_dirty_pages(inode, pages, dirty_pages, pos, copied, NULL); - if (need_unlock) + if (extents_locked) unlock_extent_cached(&BTRFS_I(inode)->io_tree, lockstart, lockend, &cached_state, GFP_NOFS); -- 2.14.2 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html