[lustre-devel] [PATCH 41/49] lustre: llite: mirror extend/copy keeps sparseness

[James Simmons]

From: Mikhail Pershin <mpershin at whamcloud.com>

- make ll_lseek() to work under group lock and on designated
  mirror

WC-bug-id: https://jira.whamcloud.com/browse/LU-13397
Lustre-commit: 0561c144cc1bb623 ("LU-13397 lfs: mirror extend/copy keeps sparseness")
Signed-off-by: Mikhail Pershin <mpershin at whamcloud.com>
Reviewed-by: Andreas Dilger <adilger at whamcloud.com>
Reviewed-by: Li Xi <lixi at ddn.com>
Reviewed-on: https://review.whamcloud.com/40772
Reviewed-by: John L. Hammond <jhammond at whamcloud.com>
Reviewed-by: Oleg Drokin <green at whamcloud.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
 fs/lustre/llite/file.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/fs/lustre/llite/file.c b/fs/lustre/llite/file.c
index 225008e..bbb2ff9 100644
--- a/fs/lustre/llite/file.c
+++ b/fs/lustre/llite/file.c
@@ -4017,8 +4017,9 @@ static int ll_heat_set(struct inode *inode, enum lu_heat_flag flags)
 	}
 }
 
-loff_t ll_lseek(struct inode *inode, loff_t offset, int whence)
+loff_t ll_lseek(struct file *file, loff_t offset, int whence)
 {
+	struct inode *inode = file_inode(file);
 	struct lu_env *env;
 	struct cl_io *io;
 	struct cl_lseek_io *lsio;
@@ -4032,6 +4033,7 @@ loff_t ll_lseek(struct inode *inode, loff_t offset, int whence)
 
 	io = vvp_env_thread_io(env);
 	io->ci_obj = ll_i2info(inode)->lli_clob;
+	ll_io_set_mirror(io, file);
 
 	lsio = &io->u.ci_lseek;
 	lsio->ls_start = offset;
@@ -4040,10 +4042,14 @@ loff_t ll_lseek(struct inode *inode, loff_t offset, int whence)
 
 	do {
 		rc = cl_io_init(env, io, CIT_LSEEK, io->ci_obj);
-		if (!rc)
+		if (!rc) {
+			struct vvp_io *vio = vvp_env_io(env);
+
+			vio->vui_fd = file->private_data;
 			rc = cl_io_loop(env, io);
-		else
+		} else {
 			rc = io->ci_result;
+		}
 		retval = rc ? : lsio->ls_result;
 		cl_io_fini(env, io);
 	} while (unlikely(io->ci_need_restart));
@@ -4077,7 +4083,7 @@ static loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
 		cl_sync_file_range(inode, offset, OBD_OBJECT_EOF,
 				   CL_FSYNC_LOCAL, 0);
 
-		retval = ll_lseek(inode, offset, origin);
+		retval = ll_lseek(file, offset, origin);
 		if (retval < 0)
 			return retval;
 
-- 
1.8.3.1