f2fs: call write_checkpoint under disabled gc

During the write_checkpoint, we should avoid f2fs_gc trigger to avoid any
filesystem consistency.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 21ccc481647481f0d20f23258f67fdac9c549285..d391a5913c792a06f0c80f68ee8ffa1da7bb0fb7 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1046,7 +1046,9 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
        cpc.trim_minlen = range->minlen >> sbi->log_blocksize;
 
        /* do checkpoint to issue discard commands safely */
+       mutex_lock(&sbi->gc_mutex);
        write_checkpoint(sbi, &cpc);
+       mutex_unlock(&sbi->gc_mutex);
 out:
        range->len = cpc.trimmed << sbi->log_blocksize;
        return 0;