kernel.git/fs/f2fs/segment.c, branch linux-4.20.y

f2fs: fix to reorder set_page_dirty and wait_on_page_writeback

2019-02-12T19:02:19Z

[ Upstream commit 8d64d365aed355b2e2465d19ba61df02462fff4d ] This patch reorders flow from - update page - set_page_dirty - wait_on_page_writeback to - wait_on_page_writeback - update page - set_page_dirty The reason is: - set_page_dirty will increase reference of dirty page, the reference should be cleared before wait_on_page_writeback to keep its consistency. - some devices need stable page during page writebacking, so we should not change page's data. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin

f2fs: fix data corruption issue with hardware encryption

2018-10-23T00:54:47Z

Direct IO can be used in case of hardware encryption. The following scenario results into data corruption issue in this path - Thread A - Thread B- -> write file#1 in direct IO -> GC gets kicked in -> GC submitted bio on meta mapping for file#1, but pending completion -> write file#1 again with new data in direct IO -> GC bio gets completed now -> GC writes old data to the new location and thus file#1 is corrupted. Fix this by submitting and waiting for pending io on meta mapping for direct IO case in f2fs_map_blocks(). Signed-off-by: Sahitya Tummala Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: fix to spread clear_cold_data()

2018-10-23T00:54:46Z

We need to drop PG_checked flag on page as well when we clear PG_uptodate flag, in order to avoid treating the page as GCing one later. Signed-off-by: Weichao Guo Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: use rb_*_cached friends

2018-10-16T16:36:59Z

As rbtree supports caching leftmost node natively, update f2fs codes to use rb_*_cached helpers to speed up leftmost node visiting. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: checkpoint disabling

2018-10-16T16:36:39Z

Note that, it requires "f2fs: return correct errno in f2fs_gc". This adds a lightweight non-persistent snapshotting scheme to f2fs. To use, mount with the option checkpoint=disable, and to return to normal operation, remount with checkpoint=enable. If the filesystem is shut down before remounting with checkpoint=enable, it will revert back to its apparent state when it was first mounted with checkpoint=disable. This is useful for situations where you wish to be able to roll back the state of the disk in case of some critical failure. Signed-off-by: Daniel Rosenberg [Jaegeuk Kim: use SB_RDONLY instead of MS_RDONLY] Signed-off-by: Jaegeuk Kim

Revert: "f2fs: check last page index in cached bio to decide submission"

2018-10-01T01:39:54Z

There is one case that we can leave bio in f2fs, result in hanging page writeback waiter. Thread A Thread B - f2fs_write_cache_pages - f2fs_submit_page_write page #0 cached in bio #0 of cold log - f2fs_submit_page_write page #1 cached in bio #1 of warm log - f2fs_write_cache_pages - f2fs_submit_page_write bio is full, submit bio #1 contain page #1 - f2fs_submit_merged_write_cond(, page #1) fail to submit bio #0 due to page #1 is not in any cached bios. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: add to account meta IO

2018-10-01T01:33:21Z

This patch supports to account meta IO, it enables to show write IO from f2fs more comprehensively via 'status' debugfs entry. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: avoid f2fs_bug_on if f2fs_get_meta_page_nofail got EIO

2018-09-28T17:39:58Z

This patch avoids BUG_ON when f2fs_get_meta_page_nofail got EIO during xfstests/generic/475. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: add new idle interval timing for discard and gc paths

2018-09-19T22:55:14Z

This helps to control the frequency of submission of discard and GC requests independently, based on the need. Suggested-by: Chao Yu Signed-off-by: Sahitya Tummala Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: add SPDX license identifiers

2018-09-12T20:07:10Z

Remove the verbose license text from f2fs files and replace them with SPDX tags. This does not change the license of any of the code. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim