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authorJosef Bacik <josef@toxicpanda.com>2020-07-21 10:22:25 -0400
committerDavid Sterba <dsterba@suse.com>2020-10-07 12:06:52 +0200
commit8698fc4eb7884eeba29adc4193f9d05fa2bed16b (patch)
treec3e34ecebb57efe722b67fa664a8bdc727f4f431 /fs/btrfs/space-info.h
parenta1ed0a8216f7c7305ccfaa2c93b498f10b340ede (diff)
btrfs: add btrfs_reserve_data_bytes and use it
Create a new function btrfs_reserve_data_bytes() in order to handle data reservations. This uses the new flush types and flush states to handle making data reservations. This patch specifically does not change any functionality, and is purposefully not cleaned up in order to make bisection easier for the future patches. The new helper is identical to the old helper in how it handles data reservations. We first try to force a chunk allocation, and then we run through the flush states all at once and in the same order that they were done with the old helper. Subsequent patches will clean this up and change the behavior of the flushing, and it is important to keep those changes separate so we can easily bisect down to the patch that caused the regression, rather than the patch that made us start using the new infrastructure. 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>
Diffstat (limited to 'fs/btrfs/space-info.h')
-rw-r--r--fs/btrfs/space-info.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/space-info.h b/fs/btrfs/space-info.h
index c3c64019950a..5646393b928c 100644
--- a/fs/btrfs/space-info.h
+++ b/fs/btrfs/space-info.h
@@ -149,5 +149,7 @@ static inline void btrfs_space_info_free_bytes_may_use(
btrfs_try_granting_tickets(fs_info, space_info);
spin_unlock(&space_info->lock);
}
+int btrfs_reserve_data_bytes(struct btrfs_fs_info *fs_info, u64 bytes,
+ enum btrfs_reserve_flush_enum flush);
#endif /* BTRFS_SPACE_INFO_H */