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ntfs: not zero out range beyond init in punch_hole

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The area beyond initialized_size are read as zero values, there is no need
to zero out that region.

Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Hyunchul Lee 2026-04-03 08:54:11 +09:00 committed by Namjae Jeon
parent 8b4064e614
commit ca513e492f
1 changed files with 20 additions and 11 deletions
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31
fs/ntfs/file.c
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@ -876,14 +876,19 @@ static int ntfs_punch_hole(struct ntfs_inode *ni, int mode, loff_t offset,
end_vcn = ntfs_bytes_to_cluster(vol, end_offset - 1) + 1;
if (offset & vol->cluster_size_mask) {
loff_t to;
if (offset < ni->initialized_size) {
loff_t to;
to = min_t(loff_t, ntfs_cluster_to_bytes(vol, start_vcn + 1),
end_offset);
err = iomap_zero_range(vi, offset, to - offset, NULL,
&ntfs_seek_iomap_ops,
&ntfs_iomap_folio_ops, NULL);
if (err < 0 || (end_vcn - start_vcn) == 1)
to = min_t(loff_t,
ntfs_cluster_to_bytes(vol, start_vcn + 1),
end_offset);
err = iomap_zero_range(vi, offset, to - offset,
NULL, &ntfs_seek_iomap_ops,
&ntfs_iomap_folio_ops, NULL);
if (err < 0)
goto out;
}
if (end_vcn - start_vcn == 1)
goto out;
start_vcn++;
}
@ -892,10 +897,14 @@ static int ntfs_punch_hole(struct ntfs_inode *ni, int mode, loff_t offset,
loff_t from;
from = ntfs_cluster_to_bytes(vol, end_vcn - 1);
err = iomap_zero_range(vi, from, end_offset - from, NULL,
&ntfs_seek_iomap_ops,
&ntfs_iomap_folio_ops, NULL);
if (err < 0 || (end_vcn - start_vcn) == 1)
if (from < ni->initialized_size) {
err = iomap_zero_range(vi, from, end_offset - from,
NULL, &ntfs_seek_iomap_ops,
&ntfs_iomap_folio_ops, NULL);
if (err < 0)
goto out;
}
if (end_vcn - start_vcn == 1)
goto out;
end_vcn--;
}