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authorKonstantin Komarov <almaz.alexandrovich@paragon-software.com>2022-07-06 20:01:11 +0300
committerKonstantin Komarov <almaz.alexandrovich@paragon-software.com>2022-08-03 18:25:07 +0300
commit54033c135061b52d4405facba2e49177a5716a31 (patch)
tree9dab217599b3cb4f7e6ef50fc40c89030fa0f91e /fs/ntfs3
parent42f66a7fdaa0d15691467fb7a808040f2d5ad0c0 (diff)
downloadlinux-54033c135061b52d4405facba2e49177a5716a31.tar.xz
fs/ntfs3: Added comments to frecord functions
Added some comments in frecord.c for more context. Also changed run_lookup to static because it's an internal function. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Diffstat (limited to 'fs/ntfs3')
-rw-r--r--fs/ntfs3/bitmap.c3
-rw-r--r--fs/ntfs3/frecord.c8
-rw-r--r--fs/ntfs3/ntfs_fs.h1
-rw-r--r--fs/ntfs3/run.c2
4 files changed, 6 insertions, 8 deletions
diff --git a/fs/ntfs3/bitmap.c b/fs/ntfs3/bitmap.c
index e3b5680fd516..bb9ebb160227 100644
--- a/fs/ntfs3/bitmap.c
+++ b/fs/ntfs3/bitmap.c
@@ -1393,9 +1393,8 @@ int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits)
void wnd_zone_set(struct wnd_bitmap *wnd, size_t lcn, size_t len)
{
- size_t zlen;
+ size_t zlen = wnd->zone_end - wnd->zone_bit;
- zlen = wnd->zone_end - wnd->zone_bit;
if (zlen)
wnd_add_free_ext(wnd, wnd->zone_bit, zlen, false);
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index acd9f444bd64..bc48923693a9 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -1287,7 +1287,7 @@ static int ni_expand_mft_list(struct ntfs_inode *ni)
done = asize - run_size - SIZEOF_NONRESIDENT;
le32_sub_cpu(&ni->mi.mrec->used, done);
- /* Estimate the size of second part: run_buf=NULL. */
+ /* Estimate packed size (run_buf=NULL). */
err = run_pack(run, svcn, evcn + 1 - svcn, NULL, sbi->record_size,
&plen);
if (err < 0)
@@ -1317,6 +1317,7 @@ static int ni_expand_mft_list(struct ntfs_inode *ni)
attr->name_off = SIZEOF_NONRESIDENT_LE;
attr->flags = 0;
+ /* This function can't fail - cause already checked above. */
run_pack(run, svcn, evcn + 1 - svcn, Add2Ptr(attr, SIZEOF_NONRESIDENT),
run_size, &plen);
@@ -1392,8 +1393,6 @@ int ni_expand_list(struct ntfs_inode *ni)
/* Split MFT data as much as possible. */
err = ni_expand_mft_list(ni);
- if (err)
- goto out;
out:
return !err && !done ? -EOPNOTSUPP : err;
@@ -1419,6 +1418,7 @@ int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
u32 run_size, asize;
struct ntfs_sb_info *sbi = ni->mi.sbi;
+ /* Estimate packed size (run_buf=NULL). */
err = run_pack(run, svcn, len, NULL, sbi->max_bytes_per_attr - run_off,
&plen);
if (err < 0)
@@ -1448,12 +1448,12 @@ int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
attr->name_off = cpu_to_le16(name_off);
attr->flags = flags;
+ /* This function can't fail - cause already checked above. */
run_pack(run, svcn, len, Add2Ptr(attr, run_off), run_size, &plen);
attr->nres.svcn = cpu_to_le64(svcn);
attr->nres.evcn = cpu_to_le64((u64)svcn + len - 1);
- err = 0;
if (new_attr)
*new_attr = attr;
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index 83ed27bb624e..7a728d3589cf 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -773,7 +773,6 @@ bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn,
void run_truncate(struct runs_tree *run, CLST vcn);
void run_truncate_head(struct runs_tree *run, CLST vcn);
void run_truncate_around(struct runs_tree *run, CLST vcn);
-bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *index);
bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len,
bool is_mft);
bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len);
diff --git a/fs/ntfs3/run.c b/fs/ntfs3/run.c
index aba8ab1b9fcb..4168b8adc131 100644
--- a/fs/ntfs3/run.c
+++ b/fs/ntfs3/run.c
@@ -31,7 +31,7 @@ struct ntfs_run {
* Case of entry missing from list 'index' will be set to
* point to insertion position for the entry question.
*/
-bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *index)
+static bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *index)
{
size_t min_idx, max_idx, mid_idx;
struct ntfs_run *r;