Messages in this thread | | | From | Daeho Jeong <> | Date | Tue, 23 Apr 2024 12:47:17 -0700 | Subject | Re: [f2fs-dev] [PATCH 2/3 v2] f2fs: clear writeback when compression failed |
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On Tue, Apr 16, 2024 at 9:50 AM Jaegeuk Kim <jaegeuk@kernel.org> wrote: > > Let's stop issuing compressed writes and clear their writeback flags. > > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> > --- > > Now, I don't see any kernel hang for 24hours. > > Change log from v1: > - fix bugs > > fs/f2fs/compress.c | 40 ++++++++++++++++++++++++++++++++++++++-- > 1 file changed, 38 insertions(+), 2 deletions(-) > > diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c > index d67c471ab5df..b12d3a49bfda 100644 > --- a/fs/f2fs/compress.c > +++ b/fs/f2fs/compress.c > @@ -1031,6 +1031,31 @@ static void set_cluster_writeback(struct compress_ctx *cc) > } > } > > +static void cancel_cluster_writeback(struct compress_ctx *cc, > + struct compress_io_ctx *cic, int submitted) > +{ > + int i; > + > + /* Wait for submitted IOs. */ > + if (submitted > 1) { > + f2fs_submit_merged_write(F2FS_I_SB(cc->inode), DATA); > + while (atomic_read(&cic->pending_pages) != > + (cc->valid_nr_cpages - submitted + 1)) > + f2fs_io_schedule_timeout(DEFAULT_IO_TIMEOUT); > + } > + > + /* Cancel writeback and stay locked. */ > + for (i = 0; i < cc->cluster_size; i++) { > + if (i < submitted) { > + inode_inc_dirty_pages(cc->inode); > + lock_page(cc->rpages[i]); > + } > + clear_page_private_gcing(cc->rpages[i]); > + if (folio_test_writeback(page_folio(cc->rpages[i]))) > + end_page_writeback(cc->rpages[i]); > + } > +} > + > static void set_cluster_dirty(struct compress_ctx *cc) > { > int i; > @@ -1232,7 +1257,6 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc, > .page = NULL, > .encrypted_page = NULL, > .compressed_page = NULL, > - .submitted = 0, > .io_type = io_type, > .io_wbc = wbc, > .encrypted = fscrypt_inode_uses_fs_layer_crypto(cc->inode) ? > @@ -1358,7 +1382,16 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc, > fio.compressed_page = cc->cpages[i - 1]; > > cc->cpages[i - 1] = NULL; > + fio.submitted = 0; > f2fs_outplace_write_data(&dn, &fio); > + if (unlikely(!fio.submitted)) { > + cancel_cluster_writeback(cc, cic, i); > + > + /* To call fscrypt_finalize_bounce_page */ > + i = cc->valid_nr_cpages; > + *submitted = 0; > + goto out_destroy_crypt; > + } > (*submitted)++; > unlock_continue: > inode_dec_dirty_pages(cc->inode); > @@ -1392,8 +1425,11 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc, > out_destroy_crypt: > page_array_free(cc->inode, cic->rpages, cc->cluster_size); > > - for (--i; i >= 0; i--) > + for (--i; i >= 0; i--) { > + if (!cc->cpages[i]) > + continue; > fscrypt_finalize_bounce_page(&cc->cpages[i]); > + } > out_put_cic: > kmem_cache_free(cic_entry_slab, cic); > out_put_dnode: > -- > 2.44.0.683.g7961c838ac-goog > > > > _______________________________________________ > Linux-f2fs-devel mailing list > Linux-f2fs-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
Reviewed-by: Daeho Jeong <daehojeong@google.com>
Thanks,
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