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fs/ntfs3: Fixing work with sparse clusters

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Simplify logic in ntfs_extend_initialized_size, ntfs_sparse_cluster
and ntfs_fallocate.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Konstantin Komarov 2022-10-07 13:57:28 +03:00
parent ba11892889
commit 2f56a3f8d8
No known key found for this signature in database
GPG Key ID: A9B0331F832407B6
2 changed files with 18 additions and 34 deletions
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39
fs/ntfs3/file.c
View File

@ -128,26 +128,10 @@ static int ntfs_extend_initialized_size(struct file *file,
goto out;
if (lcn == SPARSE_LCN) {
loff_t vbo = (loff_t)vcn << bits;
loff_t to = vbo + ((loff_t)clen << bits);
if (to <= new_valid) {
ni->i_valid = to;
pos = to;
pos = ((loff_t)clen + vcn) << bits;
ni->i_valid = pos;
goto next;
}
if (vbo < pos) {
pos = vbo;
} else {
to = (new_valid >> bits) << bits;
if (pos < to) {
ni->i_valid = to;
pos = to;
goto next;
}
}
}
}
zerofrom = pos & (PAGE_SIZE - 1);
@ -279,8 +263,9 @@ void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn,
{
struct address_space *mapping = inode->i_mapping;
struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info;
u64 vbo = (u64)vcn << sbi->cluster_bits;
u64 bytes = (u64)len << sbi->cluster_bits;
u8 cluster_bits = sbi->cluster_bits;
u64 vbo = (u64)vcn << cluster_bits;
u64 bytes = (u64)len << cluster_bits;
u32 blocksize = 1 << inode->i_blkbits;
pgoff_t idx0 = page0 ? page0->index : -1;
loff_t vbo_clst = vbo & sbi->cluster_mask_inv;
@ -329,11 +314,10 @@ void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn,
zero_user_segment(page, from, to);
if (!partial) {
if (!PageUptodate(page))
if (!partial)
SetPageUptodate(page);
flush_dcache_page(page);
set_page_dirty(page);
}
if (idx != idx0) {
unlock_page(page);
@ -341,7 +325,6 @@ void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn,
}
cond_resched();
}
mark_inode_dirty(inode);
}
/*
@ -588,11 +571,7 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
u32 frame_size;
loff_t mask, vbo_a, end_a, tmp;
err = filemap_write_and_wait_range(mapping, vbo, end - 1);
if (err)
goto out;
err = filemap_write_and_wait_range(mapping, end, LLONG_MAX);
err = filemap_write_and_wait_range(mapping, vbo, LLONG_MAX);
if (err)
goto out;
@ -693,7 +672,7 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
goto out;
if (is_supported_holes) {
CLST vcn_v = ni->i_valid >> sbi->cluster_bits;
CLST vcn_v = bytes_to_cluster(sbi, ni->i_valid);
CLST vcn = vbo >> sbi->cluster_bits;
CLST cend = bytes_to_cluster(sbi, end);
CLST lcn, clen;

7
fs/ntfs3/inode.c
View File

@ -646,7 +646,12 @@ static noinline int ntfs_get_block_vbo(struct inode *inode, u64 vbo,
bh->b_size = block_size;
off = vbo & (PAGE_SIZE - 1);
set_bh_page(bh, page, off);
ll_rw_block(REQ_OP_READ, 1, &bh);
lock_buffer(bh);
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
submit_bh(REQ_OP_READ, bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
err = -EIO;