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This still needs to be expanded more, but this adds a basic test for
BTREE_ITER_FILTER_SNAPSHOTS.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Quota support was disabled when snapshots were released, because of some
tricky interactions with snpashots. We're sidestepping that for now -
we're simply disabling quota accounting on snapshot subvolumes.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This helps to unify the interface between bch2_mark_key() and
bch2_trans_mark_key() - and it also gives access to the journal
reservation and journal seq in the mark_key path.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This fixes building in userspace - code that's coupled to the kernel VFS
interface should live in fs.c
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Snapshot deletion needs to become a multi step process, where we unlink,
then tear down the page cache, then delete the subvolume - the deleting
flag is equivalent to an inode with i_nlink = 0.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Type size_t is architecture-specific. Fix warnings for some non-amd64
arches.
Signed-off-by: Brett Holman <bholman.devel@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
The data move path operates on existing extents, and not within a
subvolume as the regular IO paths do. It needs to change because it may
cause existing extents to be split, and when splitting an existing
extent in an ancestor snapshot we need to make sure the new split has
the same visibility in child snapshots as the existing extent.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This patch adds subvolume.c - support for the subvolumes and snapshots
btrees and related data types and on disk data structures. The next
patches will start hooking up this new code to existing code.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
