6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gao Xiang hsiangkao@linux.alibaba.com
[ Upstream commit e2de3c1bf6a0c99b089bd706a62da8f988918858 ]
Unify the common parts of erofs_fc_free() and erofs_kill_sb() as erofs_sb_free().
Thus, fput() in erofs_fc_get_tree() is no longer needed, too.
Reviewed-by: Chao Yu chao@kernel.org Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com Link: https://lore.kernel.org/r/20241212133504.2047178-1-hsiangkao@linux.alibaba.c... Stable-dep-of: 6422cde1b0d5 ("erofs: use buffered I/O for file-backed mounts by default") Signed-off-by: Sasha Levin sashal@kernel.org --- fs/erofs/super.c | 36 +++++++++++++++++++----------------- 1 file changed, 19 insertions(+), 17 deletions(-)
diff --git a/fs/erofs/super.c b/fs/erofs/super.c index 2dd7d819572f..c40821346d50 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -718,16 +718,19 @@ static int erofs_fc_get_tree(struct fs_context *fc) GET_TREE_BDEV_QUIET_LOOKUP : 0); #ifdef CONFIG_EROFS_FS_BACKED_BY_FILE if (ret == -ENOTBLK) { + struct file *file; + if (!fc->source) return invalf(fc, "No source specified"); - sbi->fdev = filp_open(fc->source, O_RDONLY | O_LARGEFILE, 0); - if (IS_ERR(sbi->fdev)) - return PTR_ERR(sbi->fdev); + + file = filp_open(fc->source, O_RDONLY | O_LARGEFILE, 0); + if (IS_ERR(file)) + return PTR_ERR(file); + sbi->fdev = file;
if (S_ISREG(file_inode(sbi->fdev)->i_mode) && sbi->fdev->f_mapping->a_ops->read_folio) return get_tree_nodev(fc, erofs_fc_fill_super); - fput(sbi->fdev); } #endif return ret; @@ -778,19 +781,24 @@ static void erofs_free_dev_context(struct erofs_dev_context *devs) kfree(devs); }
-static void erofs_fc_free(struct fs_context *fc) +static void erofs_sb_free(struct erofs_sb_info *sbi) { - struct erofs_sb_info *sbi = fc->s_fs_info; - - if (!sbi) - return; - erofs_free_dev_context(sbi->devs); kfree(sbi->fsid); kfree(sbi->domain_id); + if (sbi->fdev) + fput(sbi->fdev); kfree(sbi); }
+static void erofs_fc_free(struct fs_context *fc) +{ + struct erofs_sb_info *sbi = fc->s_fs_info; + + if (sbi) /* free here if an error occurs before transferring to sb */ + erofs_sb_free(sbi); +} + static const struct fs_context_operations erofs_context_ops = { .parse_param = erofs_fc_parse_param, .get_tree = erofs_fc_get_tree, @@ -828,15 +836,9 @@ static void erofs_kill_sb(struct super_block *sb) kill_anon_super(sb); else kill_block_super(sb); - - erofs_free_dev_context(sbi->devs); fs_put_dax(sbi->dax_dev, NULL); erofs_fscache_unregister_fs(sb); - kfree(sbi->fsid); - kfree(sbi->domain_id); - if (sbi->fdev) - fput(sbi->fdev); - kfree(sbi); + erofs_sb_free(sbi); sb->s_fs_info = NULL; }