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| author | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2025-01-30 17:03:41 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-10 14:44:28 +0200 |
| commit | 737ee66564eed4714f9397fcbeafcec9e757f73a (patch) | |
| tree | 047faed0b1fe7605af380ad0151638b88c1172b9 /fs/ntfs3 | |
| parent | a05fbcf8a5777fe773054faee5c8375a20d2fe75 (diff) | |
| download | linux-737ee66564eed4714f9397fcbeafcec9e757f73a.tar.gz linux-737ee66564eed4714f9397fcbeafcec9e757f73a.tar.bz2 linux-737ee66564eed4714f9397fcbeafcec9e757f73a.zip | |
fs/ntfs3: Update inode->i_mapping->a_ops on compression state
[ Upstream commit b432163ebd15a0fb74051949cb61456d6c55ccbd ]
Update inode->i_mapping->a_ops when the compression state changes to
ensure correct address space operations.
Clear ATTR_FLAG_SPARSED/FILE_ATTRIBUTE_SPARSE_FILE when enabling
compression to prevent flag conflicts.
v2:
Additionally, ensure that all dirty pages are flushed and concurrent access
to the page cache is blocked.
Fixes: 6b39bfaeec44 ("fs/ntfs3: Add support for the compression attribute")
Reported-by: Kun Hu <huk23@m.fudan.edu.cn>, Jiaji Qin <jjtan24@m.fudan.edu.cn>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/ntfs3')
| -rw-r--r-- | fs/ntfs3/attrib.c | 3 | ||||
| -rw-r--r-- | fs/ntfs3/file.c | 22 | ||||
| -rw-r--r-- | fs/ntfs3/frecord.c | 6 |
3 files changed, 26 insertions, 5 deletions
diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c index af94e3737470..e946f75eb540 100644 --- a/fs/ntfs3/attrib.c +++ b/fs/ntfs3/attrib.c @@ -2664,8 +2664,9 @@ int attr_set_compress(struct ntfs_inode *ni, bool compr) attr->nres.run_off = cpu_to_le16(run_off); } - /* Update data attribute flags. */ + /* Update attribute flags. */ if (compr) { + attr->flags &= ~ATTR_FLAG_SPARSED; attr->flags |= ATTR_FLAG_COMPRESSED; attr->nres.c_unit = NTFS_LZNT_CUNIT; } else { diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index 3f96a11804c9..e9f701f884e7 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -101,8 +101,26 @@ int ntfs_fileattr_set(struct mnt_idmap *idmap, struct dentry *dentry, /* Allowed to change compression for empty files and for directories only. */ if (!is_dedup(ni) && !is_encrypted(ni) && (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { - /* Change compress state. */ - int err = ni_set_compress(inode, flags & FS_COMPR_FL); + int err = 0; + struct address_space *mapping = inode->i_mapping; + + /* write out all data and wait. */ + filemap_invalidate_lock(mapping); + err = filemap_write_and_wait(mapping); + + if (err >= 0) { + /* Change compress state. */ + bool compr = flags & FS_COMPR_FL; + err = ni_set_compress(inode, compr); + + /* For files change a_ops too. */ + if (!err) + mapping->a_ops = compr ? &ntfs_aops_cmpr : + &ntfs_aops; + } + + filemap_invalidate_unlock(mapping); + if (err) return err; } diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c index 5df6a0b5add9..81271196c557 100644 --- a/fs/ntfs3/frecord.c +++ b/fs/ntfs3/frecord.c @@ -3434,10 +3434,12 @@ int ni_set_compress(struct inode *inode, bool compr) } ni->std_fa = std->fa; - if (compr) + if (compr) { + std->fa &= ~FILE_ATTRIBUTE_SPARSE_FILE; std->fa |= FILE_ATTRIBUTE_COMPRESSED; - else + } else { std->fa &= ~FILE_ATTRIBUTE_COMPRESSED; + } if (ni->std_fa != std->fa) { ni->std_fa = std->fa; |