This is a note to let you know that I've just added the patch titled ocfs2: fix non-auto defrag path not working issue to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ocfs2-fix-non-auto-defrag-path-not-working-issue.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 236b9254f8d1edc273ad88b420aa85fbd84f492d Mon Sep 17 00:00:00 2001 From: Heming Zhao via Ocfs2-devel <ocfs2-devel@xxxxxxxxxxxxxx> Date: Mon, 20 Feb 2023 13:05:26 +0800 Subject: ocfs2: fix non-auto defrag path not working issue From: Heming Zhao via Ocfs2-devel <ocfs2-devel@xxxxxxxxxxxxxx> commit 236b9254f8d1edc273ad88b420aa85fbd84f492d upstream. This fixes three issues on move extents ioctl without auto defrag: a) In ocfs2_find_victim_alloc_group(), we have to convert bits to block first in case of global bitmap. b) In ocfs2_probe_alloc_group(), when finding enough bits in block group bitmap, we have to back off move_len to start pos as well, otherwise it may corrupt filesystem. c) In ocfs2_ioctl_move_extents(), set me_threshold both for non-auto and auto defrag paths. Otherwise it will set move_max_hop to 0 and finally cause unexpectedly ENOSPC error. Currently there are no tools triggering the above issues since defragfs.ocfs2 enables auto defrag by default. Tested with manually changing defragfs.ocfs2 to run non auto defrag path. Link: https://lkml.kernel.org/r/20230220050526.22020-1-heming.zhao@xxxxxxxx Signed-off-by: Heming Zhao <heming.zhao@xxxxxxxx> Reviewed-by: Joseph Qi <joseph.qi@xxxxxxxxxxxxxxxxx> Cc: Mark Fasheh <mark@xxxxxxxxxx> Cc: Joel Becker <jlbec@xxxxxxxxxxxx> Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx> Cc: Changwei Ge <gechangwei@xxxxxxx> Cc: Gang He <ghe@xxxxxxxx> Cc: Jun Piao <piaojun@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/ocfs2/move_extents.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) --- a/fs/ocfs2/move_extents.c +++ b/fs/ocfs2/move_extents.c @@ -444,7 +444,7 @@ static int ocfs2_find_victim_alloc_group bg = (struct ocfs2_group_desc *)gd_bh->b_data; if (vict_blkno < (le64_to_cpu(bg->bg_blkno) + - le16_to_cpu(bg->bg_bits))) { + (le16_to_cpu(bg->bg_bits) << bits_per_unit))) { *ret_bh = gd_bh; *vict_bit = (vict_blkno - blkno) >> @@ -559,6 +559,7 @@ static void ocfs2_probe_alloc_group(stru last_free_bits++; if (last_free_bits == move_len) { + i -= move_len; *goal_bit = i; *phys_cpos = base_cpos + i; break; @@ -1030,18 +1031,19 @@ int ocfs2_ioctl_move_extents(struct file context->range = ⦥ + /* + * ok, the default theshold for the defragmentation + * is 1M, since our maximum clustersize was 1M also. + * any thought? + */ + if (!range.me_threshold) + range.me_threshold = 1024 * 1024; + + if (range.me_threshold > i_size_read(inode)) + range.me_threshold = i_size_read(inode); + if (range.me_flags & OCFS2_MOVE_EXT_FL_AUTO_DEFRAG) { context->auto_defrag = 1; - /* - * ok, the default theshold for the defragmentation - * is 1M, since our maximum clustersize was 1M also. - * any thought? - */ - if (!range.me_threshold) - range.me_threshold = 1024 * 1024; - - if (range.me_threshold > i_size_read(inode)) - range.me_threshold = i_size_read(inode); if (range.me_flags & OCFS2_MOVE_EXT_FL_PART_DEFRAG) context->partial = 1; Patches currently in stable-queue which might be from ocfs2-devel@xxxxxxxxxxxxxx are queue-4.14/ocfs2-fix-non-auto-defrag-path-not-working-issue.patch queue-4.14/ocfs2-fix-defrag-path-triggering-jbd2-assert.patch