armbian/linux-cix
0
0
Fork 0
mirror of https://github.com/armbian/linux-cix.git synced 2026-01-06 12:30:45 -08:00
Code Issues Packages Projects Releases Wiki Activity

f2fs: Create COW inode from parent dentry for atomic write

Browse Source 
[ Upstream commit 8c1b787938fd86bab27a1492fa887408c75fec2b ]

The i_pino in f2fs_inode_info has the previous parent's i_ino when inode
was renamed, which may cause f2fs_ioc_start_atomic_write to fail.
If file_wrong_pino is true and i_nlink is 1, then to find a valid pino,
we should refer to the dentry from inode.

To resolve this issue, let's get parent inode using parent dentry
directly.

Fixes: 3db1de0e58 ("f2fs: change the current atomic write way")
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Reviewed-by: Sunmin Jeong <s_min.jeong@samsung.com>
Signed-off-by: Yeongjin Gil <youngjin.gil@samsung.com>
Reviewed-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yeongjin Gil
2024-08-13 16:32:44 +09:00
committed by Greg Kroah-Hartman
parent 67c3c4638f
commit 87f9d26fcc
1 changed files with 3 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
fs/f2fs/file.c
View File

@@ -2097,7 +2097,6 @@ static int f2fs_ioc_start_atomic_write(struct file *filp, bool truncate)
struct mnt_idmap *idmap = file_mnt_idmap(filp);
struct f2fs_inode_info *fi = F2FS_I(inode);
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct inode *pinode;
loff_t isize;
int ret;
@@ -2146,15 +2145,10 @@ static int f2fs_ioc_start_atomic_write(struct file *filp, bool truncate)
/* Check if the inode already has a COW inode */
if (fi->cow_inode == NULL) {
/* Create a COW inode for atomic write */
pinode = f2fs_iget(inode->i_sb, fi->i_pino);
if (IS_ERR(pinode)) {
f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
ret = PTR_ERR(pinode);
goto out;
}
struct dentry *dentry = file_dentry(filp);
struct inode *dir = d_inode(dentry->d_parent);
ret = f2fs_get_tmpfile(idmap, pinode, &fi->cow_inode);
iput(pinode);
ret = f2fs_get_tmpfile(idmap, dir, &fi->cow_inode);
if (ret) {
f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
goto out;