diff options
Diffstat (limited to 'fs/exfat')
| -rw-r--r-- | fs/exfat/dir.c | 26 | ||||
| -rw-r--r-- | fs/exfat/namei.c | 33 |
2 files changed, 43 insertions, 16 deletions
diff --git a/fs/exfat/dir.c b/fs/exfat/dir.c index c0e60ff9ec7d..30d0ac43b66c 100644 --- a/fs/exfat/dir.c +++ b/fs/exfat/dir.c @@ -905,17 +905,24 @@ static inline void exfat_reset_empty_hint(struct exfat_hint_femp *hint_femp) static inline void exfat_set_empty_hint(struct exfat_inode_info *ei, struct exfat_hint_femp *candi_empty, struct exfat_chain *clu, - int dentry, int num_entries) + int dentry, int num_entries, int entry_type) { if (ei->hint_femp.eidx == EXFAT_HINT_NONE || ei->hint_femp.eidx > dentry) { + int total_entries = EXFAT_B_TO_DEN(i_size_read(&ei->vfs_inode)); + if (candi_empty->count == 0) { candi_empty->cur = *clu; candi_empty->eidx = dentry; } - candi_empty->count++; - if (candi_empty->count == num_entries) + if (entry_type == TYPE_UNUSED) + candi_empty->count += total_entries - dentry; + else + candi_empty->count++; + + if (candi_empty->count == num_entries || + candi_empty->count + candi_empty->eidx == total_entries) ei->hint_femp = *candi_empty; } } @@ -989,7 +996,8 @@ rewind: step = DIRENT_STEP_FILE; exfat_set_empty_hint(ei, &candi_empty, &clu, - dentry, num_entries); + dentry, num_entries, + entry_type); brelse(bh); if (entry_type == TYPE_UNUSED) @@ -1100,6 +1108,16 @@ not_found: goto rewind; } + /* + * set the EXFAT_EOF_CLUSTER flag to avoid search + * from the beginning again when allocated a new cluster + */ + if (ei->hint_femp.eidx == EXFAT_HINT_NONE) { + ei->hint_femp.cur.dir = EXFAT_EOF_CLUSTER; + ei->hint_femp.eidx = p_dir->size * dentries_per_clu; + ei->hint_femp.count = 0; + } + /* initialized hint_stat */ hint_stat->clu = p_dir->dir; hint_stat->eidx = 0; diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c index b617bebc3d0f..99e00a36c029 100644 --- a/fs/exfat/namei.c +++ b/fs/exfat/namei.c @@ -224,11 +224,18 @@ static int exfat_search_empty_slot(struct super_block *sb, if (hint_femp->eidx != EXFAT_HINT_NONE) { dentry = hint_femp->eidx; - if (num_entries <= hint_femp->count) { - hint_femp->eidx = EXFAT_HINT_NONE; - return dentry; - } + /* + * If hint_femp->count is enough, it is needed to check if + * there are actual empty entries. + * Otherwise, and if "dentry + hint_famp->count" is also equal + * to "p_dir->size * dentries_per_clu", it means ENOSPC. + */ + if (dentry + hint_femp->count == p_dir->size * dentries_per_clu && + num_entries > hint_femp->count) + return -ENOSPC; + + hint_femp->eidx = EXFAT_HINT_NONE; exfat_chain_dup(&clu, &hint_femp->cur); } else { exfat_chain_dup(&clu, p_dir); @@ -293,6 +300,12 @@ static int exfat_search_empty_slot(struct super_block *sb, } } + hint_femp->eidx = p_dir->size * dentries_per_clu - num_empty; + hint_femp->count = num_empty; + if (num_empty == 0) + exfat_chain_set(&hint_femp->cur, EXFAT_EOF_CLUSTER, 0, + clu.flags); + return -ENOSPC; } @@ -369,15 +382,11 @@ static int exfat_find_empty_entry(struct inode *inode, if (exfat_ent_set(sb, last_clu, clu.dir)) return -EIO; - if (hint_femp.eidx == EXFAT_HINT_NONE) { - /* the special case that new dentry - * should be allocated from the start of new cluster - */ - hint_femp.eidx = EXFAT_B_TO_DEN_IDX(p_dir->size, sbi); - hint_femp.count = sbi->dentries_per_clu; - + if (hint_femp.cur.dir == EXFAT_EOF_CLUSTER) exfat_chain_set(&hint_femp.cur, clu.dir, 0, clu.flags); - } + + hint_femp.count += sbi->dentries_per_clu; + hint_femp.cur.size++; p_dir->size++; size = EXFAT_CLU_TO_B(p_dir->size, sbi); |