f2fs: inject to produce some orphan inodes

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

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 4365108..4fec9e7 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -45,6 +45,7 @@ enum {
        FAULT_ORPHAN,
        FAULT_BLOCK,
        FAULT_DIR_DEPTH,
+       FAULT_EVICT_INODE,
        FAULT_MAX,
 };
 
@@ -74,6 +75,8 @@ static inline bool time_to_inject(int type)
                return false;
        else if (type == FAULT_DIR_DEPTH && !IS_FAULT_SET(type))
                return false;
+       else if (type == FAULT_EVICT_INODE && !IS_FAULT_SET(type))
+               return false;
 
        atomic_inc(&f2fs_fault.inject_ops);
        if (atomic_read(&f2fs_fault.inject_ops) >= f2fs_fault.inject_rate) {

diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index bdd814d..11cb60a 100644 (file)
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -345,6 +345,11 @@ void f2fs_evict_inode(struct inode *inode)
        if (inode->i_nlink || is_bad_inode(inode))
                goto no_delete;
 
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+       if (time_to_inject(FAULT_EVICT_INODE))
+               goto no_delete;
+#endif
+
        sb_start_intwrite(inode->i_sb);
        set_inode_flag(inode, FI_NO_ALLOC);
        i_size_write(inode, 0);

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index a5b5739..27f7681 100644 (file)
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -49,6 +49,7 @@ char *fault_name[FAULT_MAX] = {
        [FAULT_ORPHAN]          = "orphan",
        [FAULT_BLOCK]           = "no more block",
        [FAULT_DIR_DEPTH]       = "too big dir depth",
+       [FAULT_EVICT_INODE]     = "evict_inode fail",
 };
 
 static void f2fs_build_fault_attr(unsigned int rate)