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f2fs: detect host-managed SMR by feature flag

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If mkfs.f2fs gives a feature flag for host-managed SMR, we can set mode=lfs
by default.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2016-06-13 09:47:48 -07:00
parent 67c3758d22
commit 52763a4b7a
4 changed files with 35 additions and 8 deletions
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16
fs/f2fs/super.c
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@@ -515,12 +515,10 @@ static int parse_options(struct super_block *sb, char *options)
return -ENOMEM;
if (strlen(name) == 8 &&
!strncmp(name, "adaptive", 8)) {
set_opt(sbi, ADAPTIVE);
clear_opt(sbi, LFS);
set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
} else if (strlen(name) == 3 &&
!strncmp(name, "lfs", 3)) {
clear_opt(sbi, ADAPTIVE);
set_opt(sbi, LFS);
set_opt_mode(sbi, F2FS_MOUNT_LFS);
} else {
kfree(name);
return -EINVAL;
@@ -966,7 +964,12 @@ static void default_options(struct f2fs_sb_info *sbi)
set_opt(sbi, EXTENT_CACHE);
sbi->sb->s_flags |= MS_LAZYTIME;
set_opt(sbi, FLUSH_MERGE);
set_opt(sbi, ADAPTIVE);
if (f2fs_sb_mounted_hmsmr(sbi->sb)) {
set_opt_mode(sbi, F2FS_MOUNT_LFS);
set_opt(sbi, DISCARD);
} else {
set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE);
}
#ifdef CONFIG_F2FS_FS_XATTR
set_opt(sbi, XATTR_USER);
@@ -1615,6 +1618,8 @@ try_onemore:
goto free_sbi;
sb->s_fs_info = sbi;
sbi->raw_super = raw_super;
default_options(sbi);
/* parse mount options */
options = kstrdup((const char *)data, GFP_KERNEL);
@@ -1644,7 +1649,6 @@ try_onemore:
memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid));
/* init f2fs-specific super block info */
sbi->raw_super = raw_super;
sbi->valid_super_block = valid_super_block;
mutex_init(&sbi->gc_mutex);
mutex_init(&sbi->cp_mutex);