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fs/ntfs3: Add new argument is_mft to ntfs_mark_rec_free 

This argument helps in avoiding double locking

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Konstantin Komarov 2022-06-30 19:14:43 +03:00
parent 6700eabb90
commit 071100ea0e
No known key found for this signature in database
GPG Key ID: A9B0331F832407B6
4 changed files with 14 additions and 11 deletions
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12
fs/ntfs3/frecord.c
View File

@ -1048,7 +1048,7 @@ out2:
err = -EINVAL;
out1:
ntfs_mark_rec_free(sbi, rno);
ntfs_mark_rec_free(sbi, rno, is_mft);
out:
return err;
@ -1243,7 +1243,7 @@ static int ni_expand_mft_list(struct ntfs_inode *ni)
mft_min = mft_new;
mi_min = mi_new;
} else {
ntfs_mark_rec_free(sbi, mft_new);
ntfs_mark_rec_free(sbi, mft_new, true);
mft_new = 0;
ni_remove_mi(ni, mi_new);
}
@ -1326,7 +1326,7 @@ static int ni_expand_mft_list(struct ntfs_inode *ni)
out:
if (mft_new) {
ntfs_mark_rec_free(sbi, mft_new);
ntfs_mark_rec_free(sbi, mft_new, true);
ni_remove_mi(ni, mi_new);
}
@ -1585,7 +1585,7 @@ int ni_delete_all(struct ntfs_inode *ni)
mi->dirty = true;
mi_write(mi, 0);
ntfs_mark_rec_free(sbi, mi->rno);
ntfs_mark_rec_free(sbi, mi->rno, false);
ni_remove_mi(ni, mi);
mi_put(mi);
node = next;
@ -1596,7 +1596,7 @@ int ni_delete_all(struct ntfs_inode *ni)
ni->mi.dirty = true;
err = mi_write(&ni->mi, 0);
ntfs_mark_rec_free(sbi, ni->mi.rno);
ntfs_mark_rec_free(sbi, ni->mi.rno, false);
return err;
}
@ -3286,7 +3286,7 @@ int ni_write_inode(struct inode *inode, int sync, const char *hint)
err = err2;
if (is_empty) {
ntfs_mark_rec_free(sbi, mi->rno);
ntfs_mark_rec_free(sbi, mi->rno, false);
rb_erase(node, &ni->mi_tree);
mi_put(mi);
}

9
fs/ntfs3/fsntfs.c
View File

@ -703,12 +703,14 @@ out:
/*
* ntfs_mark_rec_free - Mark record as free.
* is_mft - true if we are changing MFT
*/
void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno)
void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft)
{
struct wnd_bitmap *wnd = &sbi->mft.bitmap;
down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_MFT);
if (!is_mft)
down_write_nested(&wnd->rw_lock, BITMAP_MUTEX_MFT);
if (rno >= wnd->nbits)
goto out;
@ -727,7 +729,8 @@ void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno)
sbi->mft.next_free = rno;
out:
up_write(&wnd->rw_lock);
if (!is_mft)
up_write(&wnd->rw_lock);
}
/*

2
fs/ntfs3/inode.c
View File

@ -1636,7 +1636,7 @@ out4:
ni->mi.dirty = false;
discard_new_inode(inode);
out3:
ntfs_mark_rec_free(sbi, ino);
ntfs_mark_rec_free(sbi, ino, false);
out2:
__putname(new_de);

2
fs/ntfs3/ntfs_fs.h
View File

@ -590,7 +590,7 @@ int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len,
enum ALLOCATE_OPT opt);
int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft,
struct ntfs_inode *ni, struct mft_inode **mi);
void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno);
void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft);
int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to);
int ntfs_refresh_zone(struct ntfs_sb_info *sbi);
void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait);