posix_unlink: make unlinking in background configurable through volume spec file

Signed-off-by: Anand V. Avati <avati@amp.gluster.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/xlators/storage/posix/src/posix.h b/xlators/storage/posix/src/posix.h
index 88860a57116..ed6b46430dd 100644
--- a/xlators/storage/posix/src/posix.h
+++ b/xlators/storage/posix/src/posix.h
@@ -93,6 +93,14 @@ struct posix_private {
 
         gf_boolean_t    span_devices;
 
+/* 
+   decide whether posix_unlink does open (file), unlink (file), close (fd)
+   instead of just unlink (file). with the former approach there is no lockout
+   of access to parent directory during removal of very large files for the
+   entire duration of freeing of data blocks.
+*/ 
+        gf_boolean_t    background_unlink;
+
         int             num_devices_to_span;
         dev_t          *st_device;
 };