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| author | Yuezhang Mo <Yuezhang.Mo@sony.com> | 2022-11-17 04:31:30 +0100 |
|---|---|---|
| committer | Namjae Jeon <linkinjeon@kernel.org> | 2022-12-13 12:17:16 +0100 |
| commit | 36955d368dc101be885ad2c71618e3c3a93cd8ee (patch) | |
| tree | e79ffaaaff4ea61f9a1cae694cd27e00f9597931 /fs/exfat | |
| parent | exfat: fix overflow in sector and cluster conversion (diff) | |
| download | linux-36955d368dc101be885ad2c71618e3c3a93cd8ee.tar.xz linux-36955d368dc101be885ad2c71618e3c3a93cd8ee.zip | |
exfat: reuse exfat_find_location() to simplify exfat_get_dentry_set()
In exfat_get_dentry_set(), part of the code is the same as
exfat_find_location(), reuse exfat_find_location() to simplify
exfat_get_dentry_set().
Code refinement, no functional changes.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Diffstat (limited to 'fs/exfat')
| -rw-r--r-- | fs/exfat/dir.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/fs/exfat/dir.c b/fs/exfat/dir.c index 8121a7e073bc..1dfa67f307f1 100644 --- a/fs/exfat/dir.c +++ b/fs/exfat/dir.c @@ -818,7 +818,7 @@ int exfat_get_dentry_set(struct exfat_entry_set_cache *es, unsigned int type) { int ret, i, num_bh; - unsigned int off, byte_offset, clu = 0; + unsigned int off; sector_t sec; struct exfat_sb_info *sbi = EXFAT_SB(sb); struct exfat_dentry *ep; @@ -831,27 +831,16 @@ int exfat_get_dentry_set(struct exfat_entry_set_cache *es, return -EIO; } - byte_offset = EXFAT_DEN_TO_B(entry); - ret = exfat_walk_fat_chain(sb, p_dir, byte_offset, &clu); + ret = exfat_find_location(sb, p_dir, entry, &sec, &off); if (ret) return ret; memset(es, 0, sizeof(*es)); es->sb = sb; es->modified = false; - - /* byte offset in cluster */ - byte_offset = EXFAT_CLU_OFFSET(byte_offset, sbi); - - /* byte offset in sector */ - off = EXFAT_BLK_OFFSET(byte_offset, sb); es->start_off = off; es->bh = es->__bh; - /* sector offset in cluster */ - sec = EXFAT_B_TO_BLK(byte_offset, sb); - sec += exfat_cluster_to_sector(sbi, clu); - bh = sb_bread(sb, sec); if (!bh) return -EIO; @@ -878,6 +867,8 @@ int exfat_get_dentry_set(struct exfat_entry_set_cache *es, for (i = 1; i < num_bh; i++) { /* get the next sector */ if (exfat_is_last_sector_in_cluster(sbi, sec)) { + unsigned int clu = exfat_sector_to_cluster(sbi, sec); + if (p_dir->flags == ALLOC_NO_FAT_CHAIN) clu++; else if (exfat_get_next_cluster(sb, &clu)) |