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| author | Jan Kara <jack@suse.cz> | 2025-09-12 12:38:38 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-09-19 13:11:06 +0200 |
| commit | 0cee64c547e3c9cda646af3e075a64f445ee8148 (patch) | |
| tree | 8ef299818292d567a88da80cf69905a7956a9712 /fs/fs-writeback.c | |
| parent | writeback: Avoid excessively long inode switching times (diff) | |
| download | linux-0cee64c547e3c9cda646af3e075a64f445ee8148.tar.gz linux-0cee64c547e3c9cda646af3e075a64f445ee8148.zip | |
writeback: Add tracepoint to track pending inode switches
Add trace_inode_switch_wbs_queue tracepoint to allow insight into how
many inodes are queued to switch their bdi_writeback structure.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/fs-writeback.c')
| -rw-r--r-- | fs/fs-writeback.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index af5f396449f1..52129267e3bd 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -667,6 +667,7 @@ static void inode_switch_wbs(struct inode *inode, int new_wb_id) isw->inodes[0] = inode; + trace_inode_switch_wbs_queue(inode->i_wb, new_wb, 1); wb_queue_isw(new_wb, isw); return; @@ -752,6 +753,7 @@ bool cleanup_offline_cgwb(struct bdi_writeback *wb) return restart; } + trace_inode_switch_wbs_queue(wb, new_wb, nr); wb_queue_isw(new_wb, isw); return restart; |