xfs: flush speculative space allocations when we run out of spacereclaim-space-harder_2019-08-10

If a fs modification (creation, file write, reflink, etc.) is unable to
reserve enough space to handle the modification, try clearing whatever
space the filesystem might have been hanging onto in the hopes of
speeding up the filesystem.  The flushing behavior will become
particularly important when we add deferred inode inactivation because
that will increase the amount of space that isn't actively tied to user
data.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/xfs/xfs_icache.h b/fs/xfs/xfs_icache.h
index a42a682cec0b..738417c3568b 100644
--- a/fs/xfs/xfs_icache.h
+++ b/fs/xfs/xfs_icache.h
@@ -58,6 +58,7 @@ long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan);
 void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
 
 bool xfs_inode_free_quota_blocks(struct xfs_inode *ip, bool sync);
+void xfs_inode_free_blocks(struct xfs_mount *mp, bool sync);
 
 void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
 void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);