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btrfs: Cleanup the btrfs_parse_options for remount.

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Since remount will pending the new mount options to the original mount
options, which will make btrfs_parse_options check the old options then
new options, causing some stupid output like "enabling XXX" following by
"disable XXX".

This patch will add extra check before every btrfs_info to skip the
output from old options checking.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Qu Wenruo 2014-01-13 13:36:07 +08:00 committed by Chris Mason
parent 3818aea275
commit 078025347c
1 changed files with 77 additions and 60 deletions
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137
fs/btrfs/super.c
View File

@ -383,6 +383,20 @@ static match_table_t tokens = {
{Opt_err, NULL},
};
#define btrfs_set_and_info(root, opt, fmt, args...) \
{ \
if (!btrfs_test_opt(root, opt)) \
btrfs_info(root->fs_info, fmt, ##args); \
btrfs_set_opt(root->fs_info->mount_opt, opt); \
}
#define btrfs_clear_and_info(root, opt, fmt, args...) \
{ \
if (btrfs_test_opt(root, opt)) \
btrfs_info(root->fs_info, fmt, ##args); \
btrfs_clear_opt(root->fs_info->mount_opt, opt); \
}
/*
* Regular mount options parser. Everything that is needed only when
* reading in a new superblock is parsed here.
@ -398,6 +412,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
int ret = 0;
char *compress_type;
bool compress_force = false;
bool compress = false;
cache_gen = btrfs_super_cache_generation(root->fs_info->super_copy);
if (cache_gen)
@ -437,24 +452,28 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
*/
break;
case Opt_nodatasum:
btrfs_info(root->fs_info, "setting nodatasum");
btrfs_set_opt(info->mount_opt, NODATASUM);
btrfs_set_and_info(root, NODATASUM,
"setting nodatasum");
break;
case Opt_datasum:
if (btrfs_test_opt(root, NODATACOW))
btrfs_info(root->fs_info, "setting datasum, datacow enabled");
else
btrfs_info(root->fs_info, "setting datasum");
if (btrfs_test_opt(root, NODATASUM)) {
if (btrfs_test_opt(root, NODATACOW))
btrfs_info(root->fs_info, "setting datasum, datacow enabled");
else
btrfs_info(root->fs_info, "setting datasum");
}
btrfs_clear_opt(info->mount_opt, NODATACOW);
btrfs_clear_opt(info->mount_opt, NODATASUM);
break;
case Opt_nodatacow:
if (!btrfs_test_opt(root, COMPRESS) ||
!btrfs_test_opt(root, FORCE_COMPRESS)) {
if (!btrfs_test_opt(root, NODATACOW)) {
if (!btrfs_test_opt(root, COMPRESS) ||
!btrfs_test_opt(root, FORCE_COMPRESS)) {
btrfs_info(root->fs_info,
"setting nodatacow, compression disabled");
} else {
btrfs_info(root->fs_info, "setting nodatacow");
"setting nodatacow, compression disabled");
} else {
btrfs_info(root->fs_info, "setting nodatacow");
}
}
btrfs_clear_opt(info->mount_opt, COMPRESS);
btrfs_clear_opt(info->mount_opt, FORCE_COMPRESS);
@ -462,9 +481,8 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
btrfs_set_opt(info->mount_opt, NODATASUM);
break;
case Opt_datacow:
if (btrfs_test_opt(root, NODATACOW))
btrfs_info(root->fs_info, "setting datacow");
btrfs_clear_opt(info->mount_opt, NODATACOW);
btrfs_clear_and_info(root, NODATACOW,
"setting datacow");
break;
case Opt_compress_force:
case Opt_compress_force_type:
@ -472,6 +490,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
/* Fallthrough */
case Opt_compress:
case Opt_compress_type:
compress = true;
if (token == Opt_compress ||
token == Opt_compress_force ||
strcmp(args[0].from, "zlib") == 0) {
@ -498,37 +517,36 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
}
if (compress_force) {
btrfs_set_opt(info->mount_opt, FORCE_COMPRESS);
btrfs_info(root->fs_info, "force %s compression",
compress_type);
} else if (btrfs_test_opt(root, COMPRESS)) {
pr_info("btrfs: use %s compression\n",
compress_type);
btrfs_set_and_info(root, FORCE_COMPRESS,
"force %s compression",
compress_type);
} else if (compress) {
if (!btrfs_test_opt(root, COMPRESS))
btrfs_info(root->fs_info,
"btrfs: use %s compression\n",
compress_type);
}
break;
case Opt_ssd:
btrfs_info(root->fs_info, "use ssd allocation scheme");
btrfs_set_opt(info->mount_opt, SSD);
btrfs_set_and_info(root, SSD,
"use ssd allocation scheme");
break;
case Opt_ssd_spread:
btrfs_info(root->fs_info, "use spread ssd allocation scheme");
btrfs_set_opt(info->mount_opt, SSD);
btrfs_set_opt(info->mount_opt, SSD_SPREAD);
btrfs_set_and_info(root, SSD_SPREAD,
"use spread ssd allocation scheme");
break;
case Opt_nossd:
btrfs_info(root->fs_info, "not using ssd allocation scheme");
btrfs_set_opt(info->mount_opt, NOSSD);
btrfs_clear_and_info(root, NOSSD,
"not using ssd allocation scheme");
btrfs_clear_opt(info->mount_opt, SSD);
btrfs_clear_opt(info->mount_opt, SSD_SPREAD);
break;
case Opt_barrier:
if (btrfs_test_opt(root, NOBARRIER))
btrfs_info(root->fs_info, "turning on barriers");
btrfs_clear_opt(info->mount_opt, NOBARRIER);
btrfs_clear_and_info(root, NOBARRIER,
"turning on barriers");
break;
case Opt_nobarrier:
btrfs_info(root->fs_info, "turning off barriers");
btrfs_set_opt(info->mount_opt, NOBARRIER);
btrfs_set_and_info(root, NOBARRIER,
"turning off barriers");
break;
case Opt_thread_pool:
ret = match_int(&args[0], &intarg);
@ -580,22 +598,20 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
root->fs_info->sb->s_flags &= ~MS_POSIXACL;
break;
case Opt_notreelog:
btrfs_info(root->fs_info, "disabling tree log");
btrfs_set_opt(info->mount_opt, NOTREELOG);
btrfs_set_and_info(root, NOTREELOG,
"disabling tree log");
break;
case Opt_treelog:
if (btrfs_test_opt(root, NOTREELOG))
btrfs_info(root->fs_info, "enabling tree log");
btrfs_clear_opt(info->mount_opt, NOTREELOG);
btrfs_clear_and_info(root, NOTREELOG,
"enabling tree log");
break;
case Opt_flushoncommit:
btrfs_info(root->fs_info, "turning on flush-on-commit");
btrfs_set_opt(info->mount_opt, FLUSHONCOMMIT);
btrfs_set_and_info(root, FLUSHONCOMMIT,
"turning on flush-on-commit");
break;
case Opt_noflushoncommit:
if (btrfs_test_opt(root, FLUSHONCOMMIT))
btrfs_info(root->fs_info, "turning off flush-on-commit");
btrfs_clear_opt(info->mount_opt, FLUSHONCOMMIT);
btrfs_clear_and_info(root, FLUSHONCOMMIT,
"turning off flush-on-commit");
break;
case Opt_ratio:
ret = match_int(&args[0], &intarg);
@ -611,33 +627,35 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
}
break;
case Opt_discard:
btrfs_set_opt(info->mount_opt, DISCARD);
btrfs_set_and_info(root, DISCARD,
"turning on discard");
break;
case Opt_nodiscard:
btrfs_clear_opt(info->mount_opt, DISCARD);
btrfs_clear_and_info(root, DISCARD,
"turning off discard");
break;
case Opt_space_cache:
btrfs_set_opt(info->mount_opt, SPACE_CACHE);
btrfs_set_and_info(root, SPACE_CACHE,
"enabling disk space caching");
break;
case Opt_rescan_uuid_tree:
btrfs_set_opt(info->mount_opt, RESCAN_UUID_TREE);
break;
case Opt_no_space_cache:
btrfs_info(root->fs_info, "disabling disk space caching");
btrfs_clear_opt(info->mount_opt, SPACE_CACHE);
btrfs_clear_and_info(root, SPACE_CACHE,
"disabling disk space caching");
break;
case Opt_inode_cache:
btrfs_info(root->fs_info, "enabling inode map caching");
btrfs_set_opt(info->mount_opt, CHANGE_INODE_CACHE);
btrfs_set_and_info(root, CHANGE_INODE_CACHE,
"enabling inode map caching");
break;
case Opt_noinode_cache:
if (btrfs_test_opt(root, CHANGE_INODE_CACHE))
btrfs_info(root->fs_info, "disabling inode map caching");
btrfs_clear_opt(info->mount_opt, CHANGE_INODE_CACHE);
btrfs_clear_and_info(root, CHANGE_INODE_CACHE,
"disabling inode map caching");
break;
case Opt_clear_cache:
btrfs_info(root->fs_info, "force clearing of disk cache");
btrfs_set_opt(info->mount_opt, CLEAR_CACHE);
btrfs_set_and_info(root, CLEAR_CACHE,
"force clearing of disk cache");
break;
case Opt_user_subvol_rm_allowed:
btrfs_set_opt(info->mount_opt, USER_SUBVOL_RM_ALLOWED);
@ -649,13 +667,12 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
btrfs_clear_opt(info->mount_opt, ENOSPC_DEBUG);
break;
case Opt_defrag:
btrfs_info(root->fs_info, "enabling auto defrag");
btrfs_set_opt(info->mount_opt, AUTO_DEFRAG);
btrfs_set_and_info(root, AUTO_DEFRAG,
"enabling auto defrag");
break;
case Opt_nodefrag:
if (btrfs_test_opt(root, AUTO_DEFRAG))
btrfs_info(root->fs_info, "disabling auto defrag");
btrfs_clear_opt(info->mount_opt, AUTO_DEFRAG);
btrfs_clear_and_info(root, AUTO_DEFRAG,
"disabling auto defrag");
break;
case Opt_recovery:
btrfs_info(root->fs_info, "enabling auto recovery");