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| author | OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> | 2013-01-23 02:27:06 +0900 |
|---|---|---|
| committer | Daniel Phillips <daniel@tux3.org> | 2013-01-23 02:27:06 +0900 |
| commit | 26f4917d459d5db77141181c435379c396d00a10 (patch) | |
| tree | 486cfd203c43acc9245320a7b7d5a0be09e14f23 | |
| parent | 0a13fc6081dea3a8777317ca447c3c7fc9f4e946 (diff) | |
| download | linux-tux3-26f4917d459d5db77141181c435379c396d00a10.tar.gz | |
tux3: Add FIXME for future optimization case for __tux3_write_begin()
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
| -rw-r--r-- | fs/tux3/filemap_blocklib.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/tux3/filemap_blocklib.c b/fs/tux3/filemap_blocklib.c index e17aae9f651fc7..c90dae45d22f42 100644 --- a/fs/tux3/filemap_blocklib.c +++ b/fs/tux3/filemap_blocklib.c @@ -95,6 +95,12 @@ static int __tux3_write_begin(struct page *page, loff_t pos, unsigned len, if (buffer_new(bh)) clear_buffer_new(bh); if (!buffer_mapped(bh)) { + /* + * FIXME: If user overwrites block fully, we + * don't need get_block(). Since we know it is + * delayed allocation, so, we can use SEG_HOLE + * as delayed allocation. + */ WARN_ON(bh->b_size != blocksize); err = get_block(inode, block, bh, 1); if (err) |