6.11-stable review patch. If anyone has any objections, please let me know.
------------------
From: Konstantin Komarov almaz.alexandrovich@paragon-software.com
[ Upstream commit acdbd67bf939577d6f9e3cf796a005c31cec52d8 ]
Optimized cluster allocation by allocating a large chunk in advance before writing, instead of allocating during the writing process by clusters. Essentially replicates the logic of fallocate.
Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation") Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs3/file.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+)
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index cddc51f9a93b2..d31eae611fe06 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -408,6 +408,42 @@ static int ntfs_extend(struct inode *inode, loff_t pos, size_t count, err = 0; }
+ if (file && is_sparsed(ni)) { + /* + * This code optimizes large writes to sparse file. + * TODO: merge this fragment with fallocate fragment. + */ + struct ntfs_sb_info *sbi = ni->mi.sbi; + CLST vcn = pos >> sbi->cluster_bits; + CLST cend = bytes_to_cluster(sbi, end); + CLST cend_v = bytes_to_cluster(sbi, ni->i_valid); + CLST lcn, clen; + bool new; + + if (cend_v > cend) + cend_v = cend; + + /* + * Allocate and zero new clusters. + * Zeroing these clusters may be too long. + */ + for (; vcn < cend_v; vcn += clen) { + err = attr_data_get_block(ni, vcn, cend_v - vcn, &lcn, + &clen, &new, true); + if (err) + goto out; + } + /* + * Allocate but not zero new clusters. + */ + for (; vcn < cend; vcn += clen) { + err = attr_data_get_block(ni, vcn, cend - vcn, &lcn, + &clen, &new, false); + if (err) + goto out; + } + } + inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); mark_inode_dirty(inode);