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| author | Chao Yu <yuchao0@huawei.com> | 2021-03-26 09:46:22 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-03-26 10:27:46 -0700 |
| commit | 823d13e12b6cbaef2f6e5d63c648643e7bc094dd (patch) | |
| tree | 1fb70aa744cc1cc54c3421463f510e69e69e1444 /fs | |
| parent | 753a8ed0ae9c196a7d09a17aae1e354cabd1233d (diff) | |
| download | linux-stable-823d13e12b6cbaef2f6e5d63c648643e7bc094dd.tar.gz linux-stable-823d13e12b6cbaef2f6e5d63c648643e7bc094dd.tar.bz2 linux-stable-823d13e12b6cbaef2f6e5d63c648643e7bc094dd.zip | |
f2fs: fix to cover __allocate_new_section() with curseg_lock
In order to avoid race with f2fs_do_replace_block().
Fixes: f5a53edcf01e ("f2fs: support aligned pinned file")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/segment.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index c19114be554c..24ad45f5e335 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2945,19 +2945,23 @@ static void __allocate_new_section(struct f2fs_sb_info *sbi, int type) void f2fs_allocate_new_section(struct f2fs_sb_info *sbi, int type) { + down_read(&SM_I(sbi)->curseg_lock); down_write(&SIT_I(sbi)->sentry_lock); __allocate_new_section(sbi, type); up_write(&SIT_I(sbi)->sentry_lock); + up_read(&SM_I(sbi)->curseg_lock); } void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi) { int i; + down_read(&SM_I(sbi)->curseg_lock); down_write(&SIT_I(sbi)->sentry_lock); for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) __allocate_new_segment(sbi, i, false); up_write(&SIT_I(sbi)->sentry_lock); + up_read(&SM_I(sbi)->curseg_lock); } static const struct segment_allocation default_salloc_ops = { |