github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-24 06:24:02 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

ntfs: fix initialized size and page state after compressed writes

Browse Source 
The write iterator now expands attributes before calling
ntfs_compress_write(), so compressed writes must not expand the
attribute themselves. However, the compressed path still needs to reject
zero-byte iterator copies, advance initialized_size after successful I/O,
and invalidate modified folios after a failed compression-unit write.
Reject no-progress copies, persist the new initialized size on success,

and clear folio uptodate state when the synchronous write fails.

Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Namjae Jeon 2026-07-21 11:58:08 +09:00
parent eb67671cd8
commit b54559689a
1 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
fs/ntfs/compress.c
View File

@ -1549,13 +1549,26 @@ int ntfs_compress_write(struct ntfs_inode *ni, loff_t pos, size_t count,
}
}
err = ntfs_write_cb(ni, pos, pages, pages_per_cb, page_offset);
if (!copied) {
err = -EFAULT;
goto release_pages;
}
err = ntfs_write_cb(ni, pos, pages, pages_per_cb, page_offset);
if (!err && pos + copied > ni->initialized_size) {
mutex_lock(&ni->mrec_lock);
err = ntfs_attr_set_initialized_size(ni, pos + copied);
mutex_unlock(&ni->mrec_lock);
}
release_pages:
for (i = 0; i < pages_per_cb; i++) {
folio = page_folio(pages[i]);
if (i < ip) {
if (!err) {
folio_clear_dirty(folio);
folio_mark_uptodate(folio);
} else {
folio_clear_uptodate(folio);
}
folio_unlock(folio);
folio_put(folio);