[PATCH 2/5] xfs: add flush flag to xfs_eofblocks

[Brian Foster <bfoster@redhat.com>]

The flush flag allows the caller to issue a flush for scanned inodes. In
ENOSPC conditions caused by project quotas, a flush is required to free
up reserved metadata allocations.

Signed-off-by: Brian Foster <bfoster@redhat.com>
---
 fs/xfs/xfs_fs.h     | 4 +++-
 fs/xfs/xfs_icache.c | 3 +++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h
index c5fc116..fa3a58e 100644
--- a/fs/xfs/xfs_fs.h
+++ b/fs/xfs/xfs_fs.h
@@ -374,12 +374,14 @@ struct xfs_fs_eofblocks {
 #define XFS_EOF_FLAGS_GID		(1 << 2) /* filter by gid */
 #define XFS_EOF_FLAGS_PRID		(1 << 3) /* filter by project id */
 #define XFS_EOF_FLAGS_MINFILESIZE	(1 << 4) /* filter by min file size */
+#define XFS_EOF_FLAGS_FLUSH		(1 << 5) /* issue a flush */
 #define XFS_EOF_FLAGS_VALID	\
 	(XFS_EOF_FLAGS_SYNC |	\
 	 XFS_EOF_FLAGS_UID |	\
 	 XFS_EOF_FLAGS_GID |	\
 	 XFS_EOF_FLAGS_PRID |	\
-	 XFS_EOF_FLAGS_MINFILESIZE)
+	 XFS_EOF_FLAGS_MINFILESIZE | \
+	 XFS_EOF_FLAGS_FLUSH)
 
 
 /*
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index 7ff59c9..d4e15db 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -1231,6 +1231,9 @@ xfs_inode_free_eofblocks(
 		if (eofb->eof_flags & XFS_EOF_FLAGS_MINFILESIZE &&
 		    XFS_ISIZE(ip) < eofb->eof_min_file_size)
 			return 0;
+
+		if (eofb->eof_flags & XFS_EOF_FLAGS_FLUSH)
+			filemap_flush(VFS_I(ip)->i_mapping);
 	}
 
 	/*
-- 
1.8.3.1

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