| Message ID | cover.1692858397.git.wqu@suse.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | btrfs: make extent buffer memory continuous | expand |
On Thu, Aug 24, 2023 at 02:33:35PM +0800, Qu Wenruo wrote: > [CHANGELOG] > RFC->v1: > - Rebased to the latest misc-next branch > Just a small conflicts in extent_buffer_memmove(). > > - Further cleanup the extent buffer bitmap operations > > [REPO] > https://github.com/adam900710/linux/tree/eb_page_cleanups > > This includes the submitted extent buffer accessors cleanup as > the dependency. > > [BACKGROUND] > We have a lot of extent buffer code addressing the cross-page accesses, on > the other hand, other filesystems like XFS is mapping its xfs_buf into > kernel virtual address space, so that they can access the content of > xfs_buf without bothering the page boundaries. > > [OBJECTIVE] > This patchset is mostly learning from the xfs_buf, to greatly simplify > the extent buffer accessors. > > Now all the extent buffer accessors are turned into wrappers of > memcpy()/memcmp()/memmove(). > > For now, it can pass test cases from btrfs group without new > regressions. > > Qu Wenruo (3): > btrfs: warn on tree blocks which are not nodesize aligned > btrfs: map uncontinuous extent buffer pages into virtual address space > btrfs: utilize the physically/virtually continuous extent buffer > memory My objections stand and we can continue the discussion under the RFC series, but for testing purposes I'll add the series to for-next.
[CHANGELOG] RFC->v1: - Rebased to the latest misc-next branch Just a small conflicts in extent_buffer_memmove(). - Further cleanup the extent buffer bitmap operations [REPO] https://github.com/adam900710/linux/tree/eb_page_cleanups This includes the submitted extent buffer accessors cleanup as the dependency. [BACKGROUND] We have a lot of extent buffer code addressing the cross-page accesses, on the other hand, other filesystems like XFS is mapping its xfs_buf into kernel virtual address space, so that they can access the content of xfs_buf without bothering the page boundaries. [OBJECTIVE] This patchset is mostly learning from the xfs_buf, to greatly simplify the extent buffer accessors. Now all the extent buffer accessors are turned into wrappers of memcpy()/memcmp()/memmove(). For now, it can pass test cases from btrfs group without new regressions. Qu Wenruo (3): btrfs: warn on tree blocks which are not nodesize aligned btrfs: map uncontinuous extent buffer pages into virtual address space btrfs: utilize the physically/virtually continuous extent buffer memory fs/btrfs/disk-io.c | 18 +-- fs/btrfs/extent_io.c | 360 +++++++++++++------------------------------ fs/btrfs/extent_io.h | 17 ++ fs/btrfs/fs.h | 7 + 4 files changed, 139 insertions(+), 263 deletions(-)