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| author | Josef Bacik <josef@toxicpanda.com> | 2020-07-21 17:22:23 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-10-07 13:06:52 +0300 |
| commit | 058e6d1d267fe9c7e072533d2e1469d93aec3ec7 (patch) | |
| tree | b45ec5d3c6482e47d8ce07b04d54314cf83d8148 | |
| parent | 448b966b49be55af8f4aa79b24d7896809fd8e67 (diff) | |
| download | linux-058e6d1d267fe9c7e072533d2e1469d93aec3ec7.tar.xz | |
btrfs: add flushing states for handling data reservations
Currently the way we do data reservations is by seeing if we have enough
space in our space_info. If we do not and we're a normal inode we'll
1) Attempt to force a chunk allocation until we can't anymore.
2) If that fails we'll flush delalloc, then commit the transaction, then
run the delayed iputs.
If we are a free space inode we're only allowed to force a chunk
allocation. In order to use the normal flushing mechanism we need to
encode this into a flush state array for normal inodes. Since both will
start with allocating chunks until the space info is full there is no
need to add this as a flush state, this will be handled specially.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Tested-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/ctree.h | 2 | ||||
| -rw-r--r-- | fs/btrfs/space-info.c | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index e2ec4f067857..098f006fc5a3 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2592,6 +2592,8 @@ enum btrfs_reserve_flush_enum { * * Can be interruped by fatal signal. */ + BTRFS_RESERVE_FLUSH_DATA, + BTRFS_RESERVE_FLUSH_FREE_SPACE_INODE, BTRFS_RESERVE_FLUSH_ALL, /* diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index 6a9bc5cc487b..980b6f641e78 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -1017,6 +1017,12 @@ static const enum btrfs_flush_state evict_flush_states[] = { COMMIT_TRANS, }; +static const enum btrfs_flush_state data_flush_states[] = { + FLUSH_DELALLOC_WAIT, + COMMIT_TRANS, + RUN_DELAYED_IPUTS, +}; + static void priority_reclaim_metadata_space(struct btrfs_fs_info *fs_info, struct btrfs_space_info *space_info, struct reserve_ticket *ticket, |