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fuse: refactor finished writeback stats updates into helper function

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Move the logic for updating the bdi and page stats for a finished
writeback into a separate helper function, where it can be called from
both fuse_writepage_finish() and fuse_writepage_add() (in the case
where there is already an auxiliary write request for the page).

No functional changes added.

Suggested by: Jingbo Xu <jefflexu@linux.alibaba.com>

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Joanne Koong 2024-08-26 14:19:03 -07:00 committed by Miklos Szeredi
parent 509a6458b4
commit c04e3b2118
1 changed files with 14 additions and 17 deletions
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31
fs/fuse/file.c
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@ -1769,19 +1769,25 @@ static void fuse_writepage_free(struct fuse_writepage_args *wpa)
kfree(wpa);
}
static void fuse_writepage_finish_stat(struct inode *inode, struct page *page)
{
struct backing_dev_info *bdi = inode_to_bdi(inode);
dec_wb_stat(&bdi->wb, WB_WRITEBACK);
dec_node_page_state(page, NR_WRITEBACK_TEMP);
wb_writeout_inc(&bdi->wb);
}
static void fuse_writepage_finish(struct fuse_writepage_args *wpa)
{
struct fuse_args_pages *ap = &wpa->ia.ap;
struct inode *inode = wpa->inode;
struct fuse_inode *fi = get_fuse_inode(inode);
struct backing_dev_info *bdi = inode_to_bdi(inode);
int i;
for (i = 0; i < ap->num_pages; i++) {
dec_wb_stat(&bdi->wb, WB_WRITEBACK);
dec_node_page_state(ap->pages[i], NR_WRITEBACK_TEMP);
wb_writeout_inc(&bdi->wb);
}
for (i = 0; i < ap->num_pages; i++)
fuse_writepage_finish_stat(inode, ap->pages[i]);
wake_up(&fi->page_waitq);
}
@ -1833,14 +1839,9 @@ __acquires(fi->lock)
/* After rb_erase() aux request list is private */
for (aux = wpa->next; aux; aux = next) {
struct backing_dev_info *bdi = inode_to_bdi(aux->inode);
next = aux->next;
aux->next = NULL;
dec_wb_stat(&bdi->wb, WB_WRITEBACK);
dec_node_page_state(aux->ia.ap.pages[0], NR_WRITEBACK_TEMP);
wb_writeout_inc(&bdi->wb);
fuse_writepage_finish_stat(aux->inode, aux->ia.ap.pages[0]);
fuse_writepage_free(aux);
}
@ -2209,11 +2210,7 @@ static bool fuse_writepage_add(struct fuse_writepage_args *new_wpa,
spin_unlock(&fi->lock);
if (tmp) {
struct backing_dev_info *bdi = inode_to_bdi(new_wpa->inode);
dec_wb_stat(&bdi->wb, WB_WRITEBACK);
dec_node_page_state(new_ap->pages[0], NR_WRITEBACK_TEMP);
wb_writeout_inc(&bdi->wb);
fuse_writepage_finish_stat(new_wpa->inode, new_ap->pages[0]);
fuse_writepage_free(new_wpa);
}