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f2fs: fix to skip recovery on readonly device
As Park Ju Hyung reported in mailing list: https://sourceforge.net/p/linux-f2fs/mailman/message/36639787/ generic_make_request: Trying to write to read-only block-device loop0 (partno 0) WARNING: CPU: 0 PID: 23437 at block/blk-core.c:2174 generic_make_request_checks+0x594/0x630 generic_make_request+0x46/0x3d0 submit_bio+0x30/0x110 __submit_merged_bio+0x68/0x390 f2fs_submit_page_write+0x1bb/0x7f0 f2fs_do_write_meta_page+0x7f/0x160 __f2fs_write_meta_page+0x70/0x140 f2fs_sync_meta_pages+0x140/0x250 f2fs_write_checkpoint+0x5c5/0x17b0 f2fs_sync_fs+0x9c/0x110 sync_filesystem+0x66/0x80 f2fs_recover_fsync_data+0x790/0xa30 f2fs_fill_super+0xe4e/0x1980 mount_bdev+0x518/0x610 mount_fs+0x34/0x13f vfs_kern_mount.part.11+0x4f/0x120 do_mount+0x2d1/0xe40 __x64_sys_mount+0xbf/0xe0 do_syscall_64+0x4a/0xf0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 print_req_error: I/O error, dev loop0, sector 4096 If block device is readonly, we should never trigger write IO from filesystem layer, but previously, orphan and journal recovery didn't consider such condition, result in triggering above warning, fix it. Reported-by: Park Ju Hyung <qkrwngud825@gmail.com> Tested-by: Park Ju Hyung <qkrwngud825@gmail.com> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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@ -644,6 +644,12 @@ int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
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if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))
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return 0;
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if (bdev_read_only(sbi->sb->s_bdev)) {
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f2fs_msg(sbi->sb, KERN_INFO, "write access "
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"unavailable, skipping orphan cleanup");
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return 0;
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}
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if (s_flags & SB_RDONLY) {
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f2fs_msg(sbi->sb, KERN_INFO, "orphan cleanup on readonly fs");
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sbi->sb->s_flags &= ~SB_RDONLY;
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@ -3377,10 +3377,17 @@ try_onemore:
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* mount should be failed, when device has readonly mode, and
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* previous checkpoint was not done by clean system shutdown.
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*/
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if (f2fs_hw_is_readonly(sbi) &&
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!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
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err = -EROFS;
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goto free_meta;
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if (f2fs_hw_is_readonly(sbi)) {
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if (!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
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err = -EROFS;
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f2fs_msg(sb, KERN_ERR,
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"Need to recover fsync data, but "
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"write access unavailable");
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goto free_meta;
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}
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f2fs_msg(sbi->sb, KERN_INFO, "write access "
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"unavailable, skipping recovery");
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goto reset_checkpoint;
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}
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if (need_fsck)
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