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f2fs: detect host-managed SMR by feature flag 

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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3
fs/f2fs/data.c
View File

@ -102,7 +102,8 @@ static inline void __submit_bio(struct f2fs_sb_info *sbi, int rw,
{
if (!is_read_io(rw)) {
atomic_inc(&sbi->nr_wb_bios);
if (current->plug && (type == DATA || type == NODE))
if (f2fs_sb_mounted_hmsmr(sbi->sb) &&
current->plug && (type == DATA || type == NODE))
blk_finish_plug(current->plug);
}
submit_bio(rw, bio);

21
fs/f2fs/f2fs.h
View File

@ -133,6 +133,7 @@ struct f2fs_mount_info {
};
#define F2FS_FEATURE_ENCRYPT 0x0001
#define F2FS_FEATURE_HMSMR 0x0002
#define F2FS_HAS_FEATURE(sb, mask) \
((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
@ -2334,6 +2335,26 @@ static inline int f2fs_sb_has_crypto(struct super_block *sb)
return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
}
static inline int f2fs_sb_mounted_hmsmr(struct super_block *sb)
{
return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_HMSMR);
}
static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
{
clear_opt(sbi, ADAPTIVE);
clear_opt(sbi, LFS);
switch (mt) {
case F2FS_MOUNT_ADAPTIVE:
set_opt(sbi, ADAPTIVE);
break;
case F2FS_MOUNT_LFS:
set_opt(sbi, LFS);
break;
}
}
static inline bool f2fs_may_encrypt(struct inode *inode)
{
#ifdef CONFIG_F2FS_FS_ENCRYPTION

3
fs/f2fs/segment.c
View File

@ -2402,7 +2402,8 @@ int build_segment_manager(struct f2fs_sb_info *sbi)
sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
sm_info->rec_prefree_segments = sm_info->main_segments *
DEF_RECLAIM_PREFREE_SEGMENTS / 100;
sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC;
if (!test_opt(sbi, LFS))
sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC;
sm_info->min_ipu_util = DEF_MIN_IPU_UTIL;
sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS;

16
fs/f2fs/super.c
View File

@ -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 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
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 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
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);