Commit 5498d5f9 authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by Damien Le Moal
Browse files

zonefs: introduce helper for zone management 



Introduce a helper function for sending zone management commands to the
block device.

As zone management commands can change a zone write pointer position
reflected in the size of the zone file, this function expects the truncate
mutex to be held.

Signed-off-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: default avatarDamien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: default avatarDamien Le Moal <damien.lemoal@wdc.com>
parent d012a719

fs/zonefs/super.c

+22 −7
Original line number Diff line number Diff line
@@ -24,6 +24,26 @@ 


#include "zonefs.h"



static inline int zonefs_zone_mgmt(struct inode *inode,

				   enum req_opf op)

{

	struct zonefs_inode_info *zi = ZONEFS_I(inode);

	int ret;



	lockdep_assert_held(&zi->i_truncate_mutex);



	ret = blkdev_zone_mgmt(inode->i_sb->s_bdev, op, zi->i_zsector,

			       zi->i_zone_size >> SECTOR_SHIFT, GFP_NOFS);

	if (ret) {

		zonefs_err(inode->i_sb,

			   "Zone management operation %s at %llu failed %d\n",

			   blk_op_str(op), zi->i_zsector, ret);

		return ret;

	}



	return 0;

}



static int zonefs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,

			      unsigned int flags, struct iomap *iomap,

			      struct iomap *srcmap)
@@ -397,14 +417,9 @@ static int zonefs_file_truncate(struct inode *inode, loff_t isize) 
	if (isize == old_isize)

		goto unlock;



	ret = blkdev_zone_mgmt(inode->i_sb->s_bdev, op, zi->i_zsector,

			       zi->i_zone_size >> SECTOR_SHIFT, GFP_NOFS);

	if (ret) {

		zonefs_err(inode->i_sb,

			   "Zone management operation at %llu failed %d",

			   zi->i_zsector, ret);

	ret = zonefs_zone_mgmt(inode, op);

	if (ret)

		goto unlock;

	}



	zonefs_update_stats(inode, isize);

	truncate_setsize(inode, isize);

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