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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-05 15:25:34 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-05 15:25:34 (GMT) |
commit | 6fbfd0592ef88ba29cdce84ef92757351f1fa9c9 (patch) | |
tree | 7c0af4bcc08f3ad7befb93d73d9729f82252c950 /fs/btrfs/ordered-data.c | |
parent | f2c32a882d2c1cde6fc552a5a3d34b4c1330edb8 (diff) | |
parent | 6887a4131da3adaab011613776d865f4bcfb5678 (diff) | |
download | linux-fsl-qoriq-6fbfd0592ef88ba29cdce84ef92757351f1fa9c9.tar.xz |
Merge v3.5-rc5 into driver-core-next
This picks up the big printk fixes, and resolves a merge issue with:
drivers/extcon/extcon_gpio.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/btrfs/ordered-data.c')
-rw-r--r-- | fs/btrfs/ordered-data.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 9e138cd..643335a 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -627,7 +627,27 @@ void btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len) /* start IO across the range first to instantiate any delalloc * extents */ - filemap_write_and_wait_range(inode->i_mapping, start, orig_end); + filemap_fdatawrite_range(inode->i_mapping, start, orig_end); + + /* + * So with compression we will find and lock a dirty page and clear the + * first one as dirty, setup an async extent, and immediately return + * with the entire range locked but with nobody actually marked with + * writeback. So we can't just filemap_write_and_wait_range() and + * expect it to work since it will just kick off a thread to do the + * actual work. So we need to call filemap_fdatawrite_range _again_ + * since it will wait on the page lock, which won't be unlocked until + * after the pages have been marked as writeback and so we're good to go + * from there. We have to do this otherwise we'll miss the ordered + * extents and that results in badness. Please Josef, do not think you + * know better and pull this out at some point in the future, it is + * right and you are wrong. + */ + if (test_bit(BTRFS_INODE_HAS_ASYNC_EXTENT, + &BTRFS_I(inode)->runtime_flags)) + filemap_fdatawrite_range(inode->i_mapping, start, orig_end); + + filemap_fdatawait_range(inode->i_mapping, start, orig_end); end = orig_end; found = 0; |