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ext4: Change remaining tracepoints to use folio

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ext4_readpage() is converted to ext4_read_folio() hence change the
related tracepoint from trace_ext4_readpage(page) to
trace_ext4_read_folio(folio). Do the same for
trace_ext4_releasepage(page) to trace_ext4_release_folio(folio)

As a minor bit of optimization to avoid an extra dereferencing,
since both of the above functions already were dereferencing
folio->mapping->host, hence change the tracepoint argument to take
(inode, folio).

Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/caba2b3c0147bed4ea7706767dc1d19cd0e29ab0.1684122756.git.ritesh.list@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ritesh Harjani 2023-05-15 16:10:42 +05:30 committed by Theodore Ts'o
parent 0b956de151
commit 36c9b45040
2 changed files with 17 additions and 16 deletions
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7
fs/ext4/inode.c
View File

@ -3105,7 +3105,7 @@ static int ext4_read_folio(struct file *file, struct folio *folio)
int ret = -EAGAIN;
struct inode *inode = folio->mapping->host;
trace_ext4_readpage(&folio->page);
trace_ext4_read_folio(inode, folio);
if (ext4_has_inline_data(inode))
ret = ext4_readpage_inline(inode, folio);
@ -3164,9 +3164,10 @@ static void ext4_journalled_invalidate_folio(struct folio *folio,
static bool ext4_release_folio(struct folio *folio, gfp_t wait)
{
journal_t *journal = EXT4_JOURNAL(folio->mapping->host);
struct inode *inode = folio->mapping->host;
journal_t *journal = EXT4_JOURNAL(inode);
trace_ext4_releasepage(&folio->page);
trace_ext4_release_folio(inode, folio);
/* Page has dirty journalled data -> cannot release */
if (folio_test_checked(folio))

26
include/trace/events/ext4.h
View File

@ -560,10 +560,10 @@ TRACE_EVENT(ext4_writepages_result,
(unsigned long) __entry->writeback_index)
);
DECLARE_EVENT_CLASS(ext4__page_op,
TP_PROTO(struct page *page),
DECLARE_EVENT_CLASS(ext4__folio_op,
TP_PROTO(struct inode *inode, struct folio *folio),
TP_ARGS(page),
TP_ARGS(inode, folio),
TP_STRUCT__entry(
__field( dev_t, dev )
@ -573,29 +573,29 @@ DECLARE_EVENT_CLASS(ext4__page_op,
),
TP_fast_assign(
__entry->dev = page->mapping->host->i_sb->s_dev;
__entry->ino = page->mapping->host->i_ino;
__entry->index = page->index;
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->index = folio->index;
),
TP_printk("dev %d,%d ino %lu page_index %lu",
TP_printk("dev %d,%d ino %lu folio_index %lu",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned long) __entry->index)
);
DEFINE_EVENT(ext4__page_op, ext4_readpage,
DEFINE_EVENT(ext4__folio_op, ext4_read_folio,
TP_PROTO(struct page *page),
TP_PROTO(struct inode *inode, struct folio *folio),
TP_ARGS(page)
TP_ARGS(inode, folio)
);
DEFINE_EVENT(ext4__page_op, ext4_releasepage,
DEFINE_EVENT(ext4__folio_op, ext4_release_folio,
TP_PROTO(struct page *page),
TP_PROTO(struct inode *inode, struct folio *folio),
TP_ARGS(page)
TP_ARGS(inode, folio)
);
DECLARE_EVENT_CLASS(ext4_invalidate_folio_op,