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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-03-01 19:42:27 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-03-01 19:42:27 +0300 |
commit | e103ecedceb37b565962a199c75dd4df57742d50 (patch) | |
tree | a509773c05c289db6a7bda0dfa9ce87e33338507 /fs/exfat/fatent.c | |
parent | c0927a7a5391f7d8e593e5e50ead7505a23cadf9 (diff) | |
parent | d5c514b6a0c0b77ed7e5ef2484e8b20eb09c5f27 (diff) | |
download | linux-e103ecedceb37b565962a199c75dd4df57742d50.tar.xz |
Merge tag 'exfat-for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat
Pull exfat updates from Namjae Jeon:
- Handle vendor extension and allocation entries as unrecognized benign
secondary entries
- Fix wrong ->i_blocks on devices with non-512 byte sector
- Add the check to avoid returning -EIO from exfat_readdir() at current
position exceeding the directory size
- Fix a bug that reach the end of the directory stream at a position
not aligned with the dentry size
- Redefine DIR_DELETED as 0xFFFFFFF7, the bad cluster number
- Two cleanup fixes and fix cluster leakage in error handling
* tag 'exfat-for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
exfat: fix the newly allocated clusters are not freed in error handling
exfat: don't print error log in normal case
exfat: remove unneeded code from exfat_alloc_cluster()
exfat: handle unreconized benign secondary entries
exfat: fix inode->i_blocks for non-512 byte sector size device
exfat: redefine DIR_DELETED as the bad cluster number
exfat: fix reporting fs error when reading dir beyond EOF
exfat: fix unexpected EOF while reading dir
Diffstat (limited to 'fs/exfat/fatent.c')
-rw-r--r-- | fs/exfat/fatent.c | 32 |
1 files changed, 12 insertions, 20 deletions
diff --git a/fs/exfat/fatent.c b/fs/exfat/fatent.c index 41ae4cce1f42..56b870d9cc0d 100644 --- a/fs/exfat/fatent.c +++ b/fs/exfat/fatent.c @@ -307,7 +307,7 @@ int exfat_alloc_cluster(struct inode *inode, unsigned int num_alloc, struct exfat_chain *p_chain, bool sync_bmap) { int ret = -ENOSPC; - unsigned int num_clusters = 0, total_cnt; + unsigned int total_cnt; unsigned int hint_clu, new_clu, last_clu = EXFAT_EOF_CLUSTER; struct super_block *sb = inode->i_sb; struct exfat_sb_info *sbi = EXFAT_SB(sb); @@ -344,17 +344,11 @@ int exfat_alloc_cluster(struct inode *inode, unsigned int num_alloc, /* check cluster validation */ if (!is_valid_cluster(sbi, hint_clu)) { - exfat_err(sb, "hint_cluster is invalid (%u)", - hint_clu); + if (hint_clu != sbi->num_clusters) + exfat_err(sb, "hint_cluster is invalid (%u), rewind to the first cluster", + hint_clu); hint_clu = EXFAT_FIRST_CLUSTER; - if (p_chain->flags == ALLOC_NO_FAT_CHAIN) { - if (exfat_chain_cont_cluster(sb, p_chain->dir, - num_clusters)) { - ret = -EIO; - goto unlock; - } - p_chain->flags = ALLOC_FAT_CHAIN; - } + p_chain->flags = ALLOC_FAT_CHAIN; } p_chain->dir = EXFAT_EOF_CLUSTER; @@ -364,7 +358,7 @@ int exfat_alloc_cluster(struct inode *inode, unsigned int num_alloc, if (new_clu != hint_clu && p_chain->flags == ALLOC_NO_FAT_CHAIN) { if (exfat_chain_cont_cluster(sb, p_chain->dir, - num_clusters)) { + p_chain->size)) { ret = -EIO; goto free_cluster; } @@ -377,8 +371,6 @@ int exfat_alloc_cluster(struct inode *inode, unsigned int num_alloc, goto free_cluster; } - num_clusters++; - /* update FAT table */ if (p_chain->flags == ALLOC_FAT_CHAIN) { if (exfat_ent_set(sb, new_clu, EXFAT_EOF_CLUSTER)) { @@ -395,13 +387,14 @@ int exfat_alloc_cluster(struct inode *inode, unsigned int num_alloc, goto free_cluster; } } + p_chain->size++; + last_clu = new_clu; - if (--num_alloc == 0) { + if (p_chain->size == num_alloc) { sbi->clu_srch_ptr = hint_clu; - sbi->used_clusters += num_clusters; + sbi->used_clusters += num_alloc; - p_chain->size += num_clusters; mutex_unlock(&sbi->bitmap_lock); return 0; } @@ -412,7 +405,7 @@ int exfat_alloc_cluster(struct inode *inode, unsigned int num_alloc, if (p_chain->flags == ALLOC_NO_FAT_CHAIN) { if (exfat_chain_cont_cluster(sb, p_chain->dir, - num_clusters)) { + p_chain->size)) { ret = -EIO; goto free_cluster; } @@ -421,8 +414,7 @@ int exfat_alloc_cluster(struct inode *inode, unsigned int num_alloc, } } free_cluster: - if (num_clusters) - __exfat_free_cluster(inode, p_chain); + __exfat_free_cluster(inode, p_chain); unlock: mutex_unlock(&sbi->bitmap_lock); return ret; |