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Subject[PATCH 3/3] btrfs: set FS_SUPPORTS_SEEK_HOLE flag.
This allows fscache to cachefiles in a btrfs filesystem.

Signed-off-by: NeilBrown <neilb@suse.de>
---
fs/btrfs/super.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 05fef198ff94..d3c5d2b40f8e 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1904,7 +1904,8 @@ static struct file_system_type btrfs_fs_type = {
.name = "btrfs",
.mount = btrfs_mount,
.kill_sb = btrfs_kill_super,
- .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA,
+ .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA |
+ FS_SUPPORTS_SEEK_HOLE,
};
MODULE_ALIAS_FS("btrfs");




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