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Date: Sat, 26 Feb 2022 10:56:27 +0800 From: yebin <yebin10@...wei.com> To: Theodore Ts'o <tytso@....edu> CC: <adilger.kernel@...ger.ca>, <linux-ext4@...r.kernel.org>, <jaegeuk@...nel.org>, <chao@...nel.org>, <linux-f2fs-devel@...ts.sourceforge.net>, <linux-kernel@...r.kernel.org>, <jack@...e.cz>, <lczerner@...hat.com> Subject: Re: [PATCH -next v2] ext4:fix file system corrupted when rmdir non empty directory with IO error On 2022/2/26 10:23, Theodore Ts'o wrote: > On Fri, Feb 11, 2022 at 05:35:27PM +0800, Ye Bin wrote: >> Now if read directory block failed, 'ext4_empty_dir' will return true, assume >> directory is empty. Obviously, it will lead to above issue. >> To solve this issue, if read directory block failed 'ext4_empty_dir' just assume >> directory isn't empty. To avoid making things worse when file system is already >> corrupted, 'ext4_empty_dir' also assume directory isn't empty. >> To distinguish the error type, return the exact error code to the caller. >> > Does the same issue exist for f2fs and ubifs? We could solve the > specific bug much more simply by having ext4_empty_dir() return FALSE > if we aren't able to read the directory block. Yes, it means that we > don't return as specific an error code in the case of an I/O error --- > although I believe we do syslog a warning --- but it makes for a much > simpler patch that doesn't requiring getting acked-by's from the > fscrypt, f2fs and ubifs folks. > > - Ted > . In fact, I only modified ext4 as you suggested in my v1 patch. [-next] ext4:fix file system corrupted when rmdir non empty directory with IO error : https://patchwork.ozlabs.org/project/linux-ext4/patch/20220209112819.3072220-1-yebin10@huawei.com/ >
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