Ratelimit the error message of zeroing out data between the valid
size and the file size in exfat_file_mmap() to not flood dmesg.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx>
---
fs/exfat/exfat_fs.h | 5 +++++
fs/exfat/file.c | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h
index 9474cd50da6d..46f2760d9846 100644
--- a/fs/exfat/exfat_fs.h
+++ b/fs/exfat/exfat_fs.h
@@ -542,6 +542,11 @@ void __exfat_fs_error(struct super_block *sb, int report, const char *fmt, ...)
/* expand to pr_*() with prefix */
#define exfat_err(sb, fmt, ...) \
pr_err("exFAT-fs (%s): " fmt "\n", (sb)->s_id, ##__VA_ARGS__)
+#define exfat_err_ratelimit(sb, fmt, args...) \
+ do { \
+ if (__ratelimit(&EXFAT_SB(sb)->ratelimit)) \
+ exfat_err(sb, fmt, ## args); \
+ } while (0)
#define exfat_warn(sb, fmt, ...) \
pr_warn("exFAT-fs (%s): " fmt "\n", (sb)->s_id, ##__VA_ARGS__)
#define exfat_info(sb, fmt, ...) \
diff --git a/fs/exfat/file.c b/fs/exfat/file.c
index 473c1641d50d..68405ae06772 100644
--- a/fs/exfat/file.c
+++ b/fs/exfat/file.c
@@ -619,7 +619,7 @@ static int exfat_file_mmap(struct file *file, struct vm_area_struct *vma)
ret = exfat_file_zeroed_range(file, ei->valid_size, end);
inode_unlock(inode);
if (ret < 0) {
- exfat_err(inode->i_sb,
+ exfat_err_ratelimit(inode->i_sb,
"mmap: fail to zero from %llu to %llu(%d)",
start, end, ret);
return ret;
--
2.34.1
Attachment:
v1-0001-exfat-ratelimit-error-msg-in-exfat_file_mmap.patch
Description: v1-0001-exfat-ratelimit-error-msg-in-exfat_file_mmap.patch
