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[v1,06/54] f2fs: f2fs_read_end_io: comment on direct access to bvec table

Message ID 1482854250-13481-7-git-send-email-tom.leiming@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ming Lei Dec. 27, 2016, 3:55 p.m. UTC 
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
---
 fs/f2fs/data.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 9ac262564fa6..5d1a192e1c3c 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -55,6 +55,10 @@  static void f2fs_read_end_io(struct bio *bio)
 	int i;
 
 #ifdef CONFIG_F2FS_FAULT_INJECTION
+	/*
+	 * It is still safe to retrieve the 1st page of the bio
+	 * in this way after supporting multipage bvec.
+	 */
 	if (time_to_inject(F2FS_P_SB(bio->bi_io_vec->bv_page), FAULT_IO))
 		bio->bi_error = -EIO;
 #endif