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authorChao Yu <yuchao0@huawei.com>2017-11-06 22:51:45 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2017-11-06 17:01:20 -0800
commita5fd505092863c520ddf26bd188716b532c1efcf (patch)
tree246d2326c249c6eb90b4677aed01dd0be017ea9d /fs/f2fs
parente8ed90a6d9a478938ef967a474a5c2a398759f4d (diff)
downloadlinux-a5fd505092863c520ddf26bd188716b532c1efcf.tar.bz2
f2fs: trace checkpoint reason in fsync()
This patch slightly changes need_do_checkpoint to return the detail info that indicates why we need do checkpoint, then caller could print it with trace message. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/f2fs.h12
-rw-r--r--fs/f2fs/file.c34
2 files changed, 30 insertions, 16 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index cc46c22192ee..5c379a8ea075 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -913,6 +913,18 @@ enum need_lock_type {
LOCK_RETRY,
};
+enum cp_reason_type {
+ CP_NO_NEEDED,
+ CP_NON_REGULAR,
+ CP_HARDLINK,
+ CP_SB_NEED_CP,
+ CP_WRONG_PINO,
+ CP_NO_SPC_ROLL,
+ CP_NODE_NEED_CP,
+ CP_FASTBOOT_MODE,
+ CP_SPEC_LOG_NUM,
+};
+
enum iostat_type {
APP_DIRECT_IO, /* app direct IOs */
APP_BUFFERED_IO, /* app buffered IOs */
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 847e933e4a84..8742c028acc6 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -144,27 +144,29 @@ static int get_parent_ino(struct inode *inode, nid_t *pino)
return 1;
}
-static inline bool need_do_checkpoint(struct inode *inode)
+static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
- bool need_cp = false;
+ enum cp_reason_type cp_reason = CP_NO_NEEDED;
- if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1)
- need_cp = true;
+ if (!S_ISREG(inode->i_mode))
+ cp_reason = CP_NON_REGULAR;
+ else if (inode->i_nlink != 1)
+ cp_reason = CP_HARDLINK;
else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
- need_cp = true;
+ cp_reason = CP_SB_NEED_CP;
else if (file_wrong_pino(inode))
- need_cp = true;
+ cp_reason = CP_WRONG_PINO;
else if (!space_for_roll_forward(sbi))
- need_cp = true;
+ cp_reason = CP_NO_SPC_ROLL;
else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
- need_cp = true;
+ cp_reason = CP_NODE_NEED_CP;
else if (test_opt(sbi, FASTBOOT))
- need_cp = true;
+ cp_reason = CP_FASTBOOT_MODE;
else if (sbi->active_logs == 2)
- need_cp = true;
+ cp_reason = CP_SPEC_LOG_NUM;
- return need_cp;
+ return cp_reason;
}
static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
@@ -199,7 +201,7 @@ static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
nid_t ino = inode->i_ino;
int ret = 0;
- bool need_cp = false;
+ enum cp_reason_type cp_reason = 0;
struct writeback_control wbc = {
.sync_mode = WB_SYNC_ALL,
.nr_to_write = LONG_MAX,
@@ -218,7 +220,7 @@ static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
clear_inode_flag(inode, FI_NEED_IPU);
if (ret) {
- trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
+ trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
return ret;
}
@@ -249,10 +251,10 @@ go_write:
* sudden-power-off.
*/
down_read(&F2FS_I(inode)->i_sem);
- need_cp = need_do_checkpoint(inode);
+ cp_reason = need_do_checkpoint(inode);
up_read(&F2FS_I(inode)->i_sem);
- if (need_cp) {
+ if (cp_reason) {
/* all the dirty node pages should be flushed for POR */
ret = f2fs_sync_fs(inode->i_sb, 1);
@@ -309,7 +311,7 @@ flush_out:
}
f2fs_update_time(sbi, REQ_TIME);
out:
- trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
+ trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
f2fs_trace_ios(NULL, 1);
return ret;
}