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ext4: minor cleanup of ext4_da_reserve_space()

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Remove outdated comments and dead code from ext4_da_reserve_space.
Clean up its trace point, and relocate it to make it more useful.

While we're at it, fix a nearby conditional used to determine if
we have a non-bigalloc file system.  It doesn't match usage elsewhere
in the code, and misleadingly suggests that an s_cluster_ratio value
of 0 would be legal.

Signed-off-by: Eric Whitney <enwlinux@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Eric Whitney
2015-06-21 21:37:05 -04:00
committed by Theodore Ts'o
parent 292db1bc6c
commit c27e43a10c
2 changed files with 9 additions and 23 deletions
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10
include/trace/events/ext4.h
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@@ -1185,15 +1185,14 @@ TRACE_EVENT(ext4_da_update_reserve_space,
);
TRACE_EVENT(ext4_da_reserve_space,
TP_PROTO(struct inode *inode, int md_needed),
TP_PROTO(struct inode *inode),
TP_ARGS(inode, md_needed),
TP_ARGS(inode),
TP_STRUCT__entry(
__field( dev_t, dev )
__field( ino_t, ino )
__field( __u64, i_blocks )
__field( int, md_needed )
__field( int, reserved_data_blocks )
__field( int, reserved_meta_blocks )
__field( __u16, mode )
@@ -1203,18 +1202,17 @@ TRACE_EVENT(ext4_da_reserve_space,
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->i_blocks = inode->i_blocks;
__entry->md_needed = md_needed;
__entry->reserved_data_blocks = EXT4_I(inode)->i_reserved_data_blocks;
__entry->reserved_meta_blocks = EXT4_I(inode)->i_reserved_meta_blocks;
__entry->mode = inode->i_mode;
),
TP_printk("dev %d,%d ino %lu mode 0%o i_blocks %llu md_needed %d "
TP_printk("dev %d,%d ino %lu mode 0%o i_blocks %llu "
"reserved_data_blocks %d reserved_meta_blocks %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
__entry->mode, __entry->i_blocks,
__entry->md_needed, __entry->reserved_data_blocks,
__entry->reserved_data_blocks,
__entry->reserved_meta_blocks)
);