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ext4: add some tracepoints in ext4/extents.c

Browse Source 
This patch adds some tracepoints in ext4/extents.c and updates a tracepoint in
ext4/inode.c.

Tested: Built and ran the kernel and verified that these tracepoints work.
Also ran xfstests.

Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Aditya Kali 2011-09-09 19:18:51 -04:00 committed by Theodore Ts'o
parent df55c99dc8
commit d8990240d8
6 changed files with 433 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/ext4/ext4.h
View File

@ -2339,4 +2339,6 @@ extern void ext4_resize_end(struct super_block *sb);
#endif /* __KERNEL__ */
#include "ext4_extents.h"
#endif /* _EXT4_H */

44
fs/ext4/extents.c
View File

@ -42,7 +42,6 @@
#include <asm/uaccess.h>
#include <linux/fiemap.h>
#include "ext4_jbd2.h"
#include "ext4_extents.h"
#include <trace/events/ext4.h>
@ -1969,6 +1968,7 @@ ext4_ext_put_in_cache(struct inode *inode, ext4_lblk_t block,
struct ext4_ext_cache *cex;
BUG_ON(len == 0);
spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
trace_ext4_ext_put_in_cache(inode, block, len, start);
cex = &EXT4_I(inode)->i_cached_extent;
cex->ec_block = block;
cex->ec_len = len;
@ -2070,6 +2070,7 @@ errout:
sbi->extent_cache_misses++;
else
sbi->extent_cache_hits++;
trace_ext4_ext_in_cache(inode, block, ret);
spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
return ret;
}
@ -2137,6 +2138,8 @@ static int ext4_ext_rm_idx(handle_t *handle, struct inode *inode,
if (err)
return err;
ext_debug("index is empty, remove it, free block %llu\n", leaf);
trace_ext4_ext_rm_idx(inode, leaf);
ext4_free_blocks(handle, inode, NULL, leaf, 1,
EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET);
return err;
@ -2222,6 +2225,7 @@ static int ext4_remove_blocks(handle_t *handle, struct inode *inode,
*/
flags |= EXT4_FREE_BLOCKS_NOFREE_FIRST_CLUSTER;
trace_ext4_remove_blocks(inode, ex, from, to, *partial_cluster);
/*
* If we have a partial cluster, and it's different from the
* cluster of the last block, we need to explicitly free the
@ -2336,6 +2340,8 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,
ex_ee_block = le32_to_cpu(ex->ee_block);
ex_ee_len = ext4_ext_get_actual_len(ex);
trace_ext4_ext_rm_leaf(inode, start, ex, *partial_cluster);
while (ex >= EXT_FIRST_EXTENT(eh) &&
ex_ee_block + ex_ee_len > start) {
@ -2591,6 +2597,8 @@ static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start)
again:
ext4_ext_invalidate_cache(inode);
trace_ext4_ext_remove_space(inode, start, depth);
/*
* We start scanning from right side, freeing all the blocks
* after i_size and walking into the tree depth-wise.
@ -2686,6 +2694,9 @@ again:
}
}
trace_ext4_ext_remove_space_done(inode, start, depth, partial_cluster,
path->p_hdr->eh_entries);
/* If we still have something in the partial cluster and we have removed
* even the first extent, then we should free the blocks in the partial
* cluster as well. */
@ -3300,6 +3311,10 @@ static int ext4_find_delalloc_range(struct inode *inode,
* detect that here.
*/
page_cache_release(page);
trace_ext4_find_delalloc_range(inode,
lblk_start, lblk_end,
search_hint_reverse,
0, i);
return 0;
}
@ -3327,6 +3342,10 @@ static int ext4_find_delalloc_range(struct inode *inode,
if (buffer_delay(bh)) {
page_cache_release(page);
trace_ext4_find_delalloc_range(inode,
lblk_start, lblk_end,
search_hint_reverse,
1, i);
return 1;
}
if (search_hint_reverse)
@ -3349,6 +3368,8 @@ nextpage:
i = index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
}
trace_ext4_find_delalloc_range(inode, lblk_start, lblk_end,
search_hint_reverse, 0, 0);
return 0;
}
@ -3414,6 +3435,8 @@ get_reserved_cluster_alloc(struct inode *inode, ext4_lblk_t lblk_start,
/* max possible clusters for this allocation */
allocated_clusters = alloc_cluster_end - alloc_cluster_start + 1;
trace_ext4_get_reserved_cluster_alloc(inode, lblk_start, num_blks);
/* Check towards left side */
c_offset = lblk_start & (sbi->s_cluster_ratio - 1);
if (c_offset) {
@ -3453,6 +3476,9 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode,
flags, allocated);
ext4_ext_show_leaf(inode, path);
trace_ext4_ext_handle_uninitialized_extents(inode, map, allocated,
newblock);
/* get_block() before submit the IO, split the extent */
if ((flags & EXT4_GET_BLOCKS_PRE_IO)) {
ret = ext4_split_unwritten_extents(handle, inode, map,
@ -3572,7 +3598,7 @@ out2:
* get_implied_cluster_alloc - check to see if the requested
* allocation (in the map structure) overlaps with a cluster already
* allocated in an extent.
* @sbi The ext4-specific superblock structure
* @sb The filesystem superblock structure
* @map The requested lblk->pblk mapping
* @ex The extent structure which might contain an implied
* cluster allocation
@ -3609,11 +3635,12 @@ out2:
* ext4_ext_map_blocks() will then allocate one or more new clusters
* by calling ext4_mb_new_blocks().
*/
static int get_implied_cluster_alloc(struct ext4_sb_info *sbi,
static int get_implied_cluster_alloc(struct super_block *sb,
struct ext4_map_blocks *map,
struct ext4_extent *ex,
struct ext4_ext_path *path)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
ext4_lblk_t c_offset = map->m_lblk & (sbi->s_cluster_ratio-1);
ext4_lblk_t ex_cluster_start, ex_cluster_end;
ext4_lblk_t rr_cluster_start, rr_cluster_end;
@ -3662,8 +3689,12 @@ static int get_implied_cluster_alloc(struct ext4_sb_info *sbi,
ext4_lblk_t next = ext4_ext_next_allocated_block(path);
map->m_len = min(map->m_len, next - map->m_lblk);
}
trace_ext4_get_implied_cluster_alloc_exit(sb, map, 1);
return 1;
}
trace_ext4_get_implied_cluster_alloc_exit(sb, map, 0);
return 0;
}
@ -3772,6 +3803,9 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
* we split out initialized portions during a write.
*/
ee_len = ext4_ext_get_actual_len(ex);
trace_ext4_ext_show_extent(inode, ee_block, ee_start, ee_len);
/* if found extent covers block, simply return it */
if (in_range(map->m_lblk, ee_block, ee_len)) {
ext4_fsblk_t partial_cluster = 0;
@ -3912,7 +3946,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
* by ext4_ext_find_extent() implies a cluster we can use.
*/
if (cluster_offset && ex &&
get_implied_cluster_alloc(sbi, map, ex, path)) {
get_implied_cluster_alloc(inode->i_sb, map, ex, path)) {
ar.len = allocated = map->m_len;
newblock = map->m_pblk;
map->m_flags |= EXT4_MAP_FROM_CLUSTER;
@ -3933,7 +3967,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
/* Check if the extent after searching to the right implies a
* cluster we can use. */
if ((sbi->s_cluster_ratio > 1) && ex2 &&
get_implied_cluster_alloc(sbi, map, ex2, path)) {
get_implied_cluster_alloc(inode->i_sb, map, ex2, path)) {
ar.len = allocated = map->m_len;
newblock = map->m_pblk;
map->m_flags |= EXT4_MAP_FROM_CLUSTER;

3
fs/ext4/inode.c
View File

@ -42,7 +42,6 @@
#include "ext4_jbd2.h"
#include "xattr.h"
#include "acl.h"
#include "ext4_extents.h"
#include "truncate.h"
#include <trace/events/ext4.h>
@ -268,7 +267,7 @@ void ext4_da_update_reserve_space(struct inode *inode,
struct ext4_inode_info *ei = EXT4_I(inode);
spin_lock(&ei->i_block_reservation_lock);
trace_ext4_da_update_reserve_space(inode, used);
trace_ext4_da_update_reserve_space(inode, used, quota_claim);
if (unlikely(used > ei->i_reserved_data_blocks)) {
ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, used %d "
"with only %d reserved data blocks\n",

1
fs/ext4/migrate.c
View File

@ -15,7 +15,6 @@
#include <linux/module.h>
#include <linux/slab.h>
#include "ext4_jbd2.h"
#include "ext4_extents.h"
/*
* The contiguous blocks details which can be

1
fs/ext4/move_extent.c
View File

@ -17,7 +17,6 @@
#include <linux/quotaops.h>
#include <linux/slab.h>
#include "ext4_jbd2.h"
#include "ext4_extents.h"
#include "ext4.h"
/**

398
include/trace/events/ext4.h
View File

@ -12,6 +12,8 @@ struct ext4_allocation_request;
struct ext4_prealloc_space;
struct ext4_inode_info;
struct mpage_da_data;
struct ext4_map_blocks;
struct ext4_extent;
#define EXT4_I(inode) (container_of(inode, struct ext4_inode_info, vfs_inode))
@ -1032,9 +1034,9 @@ TRACE_EVENT(ext4_forget,
);
TRACE_EVENT(ext4_da_update_reserve_space,
TP_PROTO(struct inode *inode, int used_blocks),
TP_PROTO(struct inode *inode, int used_blocks, int quota_claim),
TP_ARGS(inode, used_blocks),
TP_ARGS(inode, used_blocks, quota_claim),
TP_STRUCT__entry(
__field( dev_t, dev )
@ -1045,6 +1047,7 @@ TRACE_EVENT(ext4_da_update_reserve_space,
__field( int, reserved_data_blocks )
__field( int, reserved_meta_blocks )
__field( int, allocated_meta_blocks )
__field( int, quota_claim )
),
TP_fast_assign(
@ -1053,19 +1056,24 @@ TRACE_EVENT(ext4_da_update_reserve_space,
__entry->mode = inode->i_mode;
__entry->i_blocks = inode->i_blocks;
__entry->used_blocks = used_blocks;
__entry->reserved_data_blocks = EXT4_I(inode)->i_reserved_data_blocks;
__entry->reserved_meta_blocks = EXT4_I(inode)->i_reserved_meta_blocks;
__entry->allocated_meta_blocks = EXT4_I(inode)->i_allocated_meta_blocks;
__entry->reserved_data_blocks =
EXT4_I(inode)->i_reserved_data_blocks;
__entry->reserved_meta_blocks =
EXT4_I(inode)->i_reserved_meta_blocks;
__entry->allocated_meta_blocks =
EXT4_I(inode)->i_allocated_meta_blocks;
__entry->quota_claim = quota_claim;
),
TP_printk("dev %d,%d ino %lu mode 0%o i_blocks %llu used_blocks %d "
"reserved_data_blocks %d reserved_meta_blocks %d "
"allocated_meta_blocks %d",
"allocated_meta_blocks %d quota_claim %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
__entry->mode, __entry->i_blocks,
__entry->used_blocks, __entry->reserved_data_blocks,
__entry->reserved_meta_blocks, __entry->allocated_meta_blocks)
__entry->reserved_meta_blocks, __entry->allocated_meta_blocks,
__entry->quota_claim)
);
TRACE_EVENT(ext4_da_reserve_space,
@ -1589,6 +1597,382 @@ DEFINE_EVENT(ext4__trim, ext4_trim_all_free,
TP_ARGS(sb, group, start, len)
);
TRACE_EVENT(ext4_ext_handle_uninitialized_extents,
TP_PROTO(struct inode *inode, struct ext4_map_blocks *map,
unsigned int allocated, ext4_fsblk_t newblock),
TP_ARGS(inode, map, allocated, newblock),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, lblk )
__field( ext4_fsblk_t, pblk )
__field( unsigned int, len )
__field( int, flags )
__field( unsigned int, allocated )
__field( ext4_fsblk_t, newblk )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->lblk = map->m_lblk;
__entry->pblk = map->m_pblk;
__entry->len = map->m_len;
__entry->flags = map->m_flags;
__entry->allocated = allocated;
__entry->newblk = newblock;
),
TP_printk("dev %d,%d ino %lu m_lblk %u m_pblk %llu m_len %u flags %d"
"allocated %d newblock %llu",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->lblk, (unsigned long long) __entry->pblk,
__entry->len, __entry->flags,
(unsigned int) __entry->allocated,
(unsigned long long) __entry->newblk)
);
TRACE_EVENT(ext4_get_implied_cluster_alloc_exit,
TP_PROTO(struct super_block *sb, struct ext4_map_blocks *map, int ret),
TP_ARGS(sb, map, ret),
TP_STRUCT__entry(
__field( dev_t, dev )
__field( ext4_lblk_t, lblk )
__field( ext4_fsblk_t, pblk )
__field( unsigned int, len )
__field( unsigned int, flags )
__field( int, ret )
),
TP_fast_assign(
__entry->dev = sb->s_dev;
__entry->lblk = map->m_lblk;
__entry->pblk = map->m_pblk;
__entry->len = map->m_len;
__entry->flags = map->m_flags;
__entry->ret = ret;
),
TP_printk("dev %d,%d m_lblk %u m_pblk %llu m_len %u m_flags %u ret %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->lblk, (unsigned long long) __entry->pblk,
__entry->len, __entry->flags, __entry->ret)
);
TRACE_EVENT(ext4_ext_put_in_cache,
TP_PROTO(struct inode *inode, ext4_lblk_t lblk, unsigned int len,
ext4_fsblk_t start),
TP_ARGS(inode, lblk, len, start),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, lblk )
__field( unsigned int, len )
__field( ext4_fsblk_t, start )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->lblk = lblk;
__entry->len = len;
__entry->start = start;
),
TP_printk("dev %d,%d ino %lu lblk %u len %u start %llu",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->lblk,
__entry->len,
(unsigned long long) __entry->start)
);
TRACE_EVENT(ext4_ext_in_cache,
TP_PROTO(struct inode *inode, ext4_lblk_t lblk, int ret),
TP_ARGS(inode, lblk, ret),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, lblk )
__field( int, ret )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->lblk = lblk;
__entry->ret = ret;
),
TP_printk("dev %d,%d ino %lu lblk %u ret %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->lblk,
__entry->ret)
);
TRACE_EVENT(ext4_find_delalloc_range,
TP_PROTO(struct inode *inode, ext4_lblk_t from, ext4_lblk_t to,
int reverse, int found, ext4_lblk_t found_blk),
TP_ARGS(inode, from, to, reverse, found, found_blk),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, from )
__field( ext4_lblk_t, to )
__field( int, reverse )
__field( int, found )
__field( ext4_lblk_t, found_blk )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->from = from;
__entry->to = to;
__entry->reverse = reverse;
__entry->found = found;
__entry->found_blk = found_blk;
),
TP_printk("dev %d,%d ino %lu from %u to %u reverse %d found %d "
"(blk = %u)",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->from, (unsigned) __entry->to,
__entry->reverse, __entry->found,
(unsigned) __entry->found_blk)
);
TRACE_EVENT(ext4_get_reserved_cluster_alloc,
TP_PROTO(struct inode *inode, ext4_lblk_t lblk, unsigned int len),
TP_ARGS(inode, lblk, len),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, lblk )
__field( unsigned int, len )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->lblk = lblk;
__entry->len = len;
),
TP_printk("dev %d,%d ino %lu lblk %u len %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->lblk,
__entry->len)
);
TRACE_EVENT(ext4_ext_show_extent,
TP_PROTO(struct inode *inode, ext4_lblk_t lblk, ext4_fsblk_t pblk,
unsigned short len),
TP_ARGS(inode, lblk, pblk, len),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, lblk )
__field( ext4_fsblk_t, pblk )
__field( unsigned short, len )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->lblk = lblk;
__entry->pblk = pblk;
__entry->len = len;
),
TP_printk("dev %d,%d ino %lu lblk %u pblk %llu len %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->lblk,
(unsigned long long) __entry->pblk,
(unsigned short) __entry->len)
);
TRACE_EVENT(ext4_remove_blocks,
TP_PROTO(struct inode *inode, struct ext4_extent *ex,
ext4_lblk_t from, ext4_fsblk_t to,
ext4_fsblk_t partial_cluster),
TP_ARGS(inode, ex, from, to, partial_cluster),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, ee_lblk )
__field( ext4_fsblk_t, ee_pblk )
__field( unsigned short, ee_len )
__field( ext4_lblk_t, from )
__field( ext4_lblk_t, to )
__field( ext4_fsblk_t, partial )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->ee_lblk = cpu_to_le32(ex->ee_block);
__entry->ee_pblk = ext4_ext_pblock(ex);
__entry->ee_len = ext4_ext_get_actual_len(ex);
__entry->from = from;
__entry->to = to;
__entry->partial = partial_cluster;
),
TP_printk("dev %d,%d ino %lu extent [%u(%llu), %u]"
"from %u to %u partial_cluster %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->ee_lblk,
(unsigned long long) __entry->ee_pblk,
(unsigned short) __entry->ee_len,
(unsigned) __entry->from,
(unsigned) __entry->to,
(unsigned) __entry->partial)
);
TRACE_EVENT(ext4_ext_rm_leaf,
TP_PROTO(struct inode *inode, ext4_lblk_t start,
struct ext4_extent *ex, ext4_fsblk_t partial_cluster),
TP_ARGS(inode, start, ex, partial_cluster),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, start )
__field( ext4_lblk_t, ee_lblk )
__field( ext4_fsblk_t, ee_pblk )
__field( short, ee_len )
__field( ext4_fsblk_t, partial )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->start = start;
__entry->ee_lblk = le32_to_cpu(ex->ee_block);
__entry->ee_pblk = ext4_ext_pblock(ex);
__entry->ee_len = ext4_ext_get_actual_len(ex);
__entry->partial = partial_cluster;
),
TP_printk("dev %d,%d ino %lu start_lblk %u last_extent [%u(%llu), %u]"
"partial_cluster %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->start,
(unsigned) __entry->ee_lblk,
(unsigned long long) __entry->ee_pblk,
(unsigned short) __entry->ee_len,
(unsigned) __entry->partial)
);
TRACE_EVENT(ext4_ext_rm_idx,
TP_PROTO(struct inode *inode, ext4_fsblk_t pblk),
TP_ARGS(inode, pblk),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_fsblk_t, pblk )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->pblk = pblk;
),
TP_printk("dev %d,%d ino %lu index_pblk %llu",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned long long) __entry->pblk)
);
TRACE_EVENT(ext4_ext_remove_space,
TP_PROTO(struct inode *inode, ext4_lblk_t start, int depth),
TP_ARGS(inode, start, depth),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, start )
__field( int, depth )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->start = start;
__entry->depth = depth;
),
TP_printk("dev %d,%d ino %lu since %u depth %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->start,
__entry->depth)
);
TRACE_EVENT(ext4_ext_remove_space_done,
TP_PROTO(struct inode *inode, ext4_lblk_t start, int depth,
ext4_lblk_t partial, unsigned short eh_entries),
TP_ARGS(inode, start, depth, partial, eh_entries),
TP_STRUCT__entry(
__field( ino_t, ino )
__field( dev_t, dev )
__field( ext4_lblk_t, start )
__field( int, depth )
__field( ext4_lblk_t, partial )
__field( unsigned short, eh_entries )
),
TP_fast_assign(
__entry->ino = inode->i_ino;
__entry->dev = inode->i_sb->s_dev;
__entry->start = start;
__entry->depth = depth;
__entry->partial = partial;
__entry->eh_entries = eh_entries;
),
TP_printk("dev %d,%d ino %lu since %u depth %d partial %u "
"remaining_entries %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino,
(unsigned) __entry->start,
__entry->depth,
(unsigned) __entry->partial,
(unsigned short) __entry->eh_entries)
);
#endif /* _TRACE_EXT4_H */
/* This part must be outside protection */