[PATCH] zonefs: fix handling of explicit_open option on mount

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Commit a2a513be7139b279f1b5b2cee59c6c4950c34346 upstream.

Ignoring the explicit_open mount option on mount for devices that do not
have a limit on the number of open zones must be done after the mount
options are parsed and set in s_mount_opts. Move the check to ignore
the explicit_open option after the call to zonefs_parse_options() in
zonefs_fill_super().

Fixes: b5c00e975779 ("zonefs: open/close zone on file open/close")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
---
 fs/zonefs/super.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index e20e7c841489..1c2ece961128 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -1690,11 +1690,6 @@ static int zonefs_fill_super(struct super_block *sb, void *data, int silent)
 	sbi->s_mount_opts = ZONEFS_MNTOPT_ERRORS_RO;
 	sbi->s_max_open_zones = bdev_max_open_zones(sb->s_bdev);
 	atomic_set(&sbi->s_open_zones, 0);
-	if (!sbi->s_max_open_zones &&
-	    sbi->s_mount_opts & ZONEFS_MNTOPT_EXPLICIT_OPEN) {
-		zonefs_info(sb, "No open zones limit. Ignoring explicit_open mount option\n");
-		sbi->s_mount_opts &= ~ZONEFS_MNTOPT_EXPLICIT_OPEN;
-	}
 
 	ret = zonefs_read_super(sb);
 	if (ret)
@@ -1713,6 +1708,12 @@ static int zonefs_fill_super(struct super_block *sb, void *data, int silent)
 	zonefs_info(sb, "Mounting %u zones",
 		    blkdev_nr_zones(sb->s_bdev->bd_disk));
 
+	if (!sbi->s_max_open_zones &&
+	    sbi->s_mount_opts & ZONEFS_MNTOPT_EXPLICIT_OPEN) {
+		zonefs_info(sb, "No open zones limit. Ignoring explicit_open mount option\n");
+		sbi->s_mount_opts &= ~ZONEFS_MNTOPT_EXPLICIT_OPEN;
+	}
+
 	/* Create root directory inode */
 	ret = -ENOMEM;
 	inode = new_inode(sb);
-- 
2.36.1




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