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authorTheodore Ts'o <tytso@mit.edu>2011-05-22 16:12:35 -0400
committerTheodore Ts'o <tytso@mit.edu>2011-05-22 16:12:35 -0400
commit373cd5c53d5ea6622c319ecd84e29e2737d488bd (patch)
tree2df40a29def22438cc15f90e4683d43974798784 /fs/ext4
parent1bb933fb1fa8e4cb337a0d5dfd2ff4c0dc2073e8 (diff)
downloadop-kernel-dev-373cd5c53d5ea6622c319ecd84e29e2737d488bd.zip
op-kernel-dev-373cd5c53d5ea6622c319ecd84e29e2737d488bd.tar.gz
ext4: don't show mount options in /proc/mounts if there is no journal
After creating an ext4 file system without a journal: # mke2fs -t ext4 -O ^has_journal /dev/sda # mount -t ext4 /dev/sda /test the /proc/mounts will show: "/dev/sda /test ext4 rw,relatime,user_xattr,acl,barrier=1,data=writeback 0 0" which can fool users into thinking that the fs is using writeback mode. So don't set the writeback option when the journal has not been enabled; we don't depend on the writeback option being set, since ext4_should_writeback_data() in ext4_jbd2.h tests to see if the journal is not present before returning true. Reported-by: Robin Dong <sanbai@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/super.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ed5e80e..fdce4ee 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3485,7 +3485,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
goto failed_mount_wq;
} else {
clear_opt(sb, DATA_FLAGS);
- set_opt(sb, WRITEBACK_DATA);
sbi->s_journal = NULL;
needs_recovery = 0;
goto no_journal;
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