Add hash freeing functionality to the following functions which remove or rename files: msdos_rmdir() msdos_unlink() do_msdos_rename() Whenever these functions are called, the memory associated with the old, now obsolete filename is freed and dropped from the cache. Signed-off-by: Caleb D.S. Brzezinski <calebdsb@xxxxxxxxxxxxxx> --- fs/fat/namei_msdos.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c index f9d4f63c3..40a7d6df0 100644 --- a/fs/fat/namei_msdos.c +++ b/fs/fat/namei_msdos.c @@ -430,9 +430,11 @@ static int msdos_rmdir(struct inode *dir, struct dentry *dentry) struct super_block *sb = dir->i_sb; struct inode *inode = d_inode(dentry); struct fat_slot_info sinfo; + u64 hash; int err; mutex_lock(&MSDOS_SB(sb)->s_lock); + hash = msdos_fname_hash(dentry->d_name.name); err = fat_dir_empty(inode); if (err) goto out; @@ -448,6 +450,7 @@ static int msdos_rmdir(struct inode *dir, struct dentry *dentry) clear_nlink(inode); fat_truncate_time(inode, NULL, S_CTIME); fat_detach(inode); + drop_fname_from_cache(hash); out: mutex_unlock(&MSDOS_SB(sb)->s_lock); if (!err) @@ -522,10 +525,12 @@ static int msdos_unlink(struct inode *dir, struct dentry *dentry) struct inode *inode = d_inode(dentry); struct super_block *sb = inode->i_sb; struct fat_slot_info sinfo; + u64 hash; int err; mutex_lock(&MSDOS_SB(sb)->s_lock); err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo); + hash = msdos_fname_hash(dentry->d_name.name); if (err) goto out; @@ -535,6 +540,8 @@ static int msdos_unlink(struct inode *dir, struct dentry *dentry) clear_nlink(inode); fat_truncate_time(inode, NULL, S_CTIME); fat_detach(inode); + drop_fname_from_cache(hash); + out: mutex_unlock(&MSDOS_SB(sb)->s_lock); if (!err) @@ -670,6 +677,8 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name, drop_nlink(new_inode); fat_truncate_time(new_inode, &ts, S_CTIME); } + drop_fname_from_cache(msdos_fname_hash(old_name)); + out: brelse(sinfo.bh); brelse(dotdot_bh); -- 2.32.0
