xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

f2fs: trace f2fs_readdir

Browse Source 
This patch adds trace for f2fs_readdir.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2017-10-13 18:01:33 +08:00
committed by Jaegeuk Kim
parent 0c5e36db17
commit e97a3c4c6f
2 changed files with 38 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
fs/f2fs/dir.c
View File

@@ -14,6 +14,7 @@
#include "node.h"
#include "acl.h"
#include "xattr.h"
#include <trace/events/f2fs.h>
static unsigned long dir_blocks(struct inode *inode)
{
@@ -847,6 +848,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
struct f2fs_dentry_block *dentry_blk = NULL;
struct page *dentry_page = NULL;
struct file_ra_state *ra = &file->f_ra;
loff_t start_pos = ctx->pos;
unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK);
struct f2fs_dentry_ptr d;
struct fscrypt_str fstr = FSTR_INIT(NULL, 0);
@@ -855,16 +857,16 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
if (f2fs_encrypted_inode(inode)) {
err = fscrypt_get_encryption_info(inode);
if (err && err != -ENOKEY)
return err;
goto out;
err = fscrypt_fname_alloc_buffer(inode, F2FS_NAME_LEN, &fstr);
if (err < 0)
return err;
goto out;
}
if (f2fs_has_inline_dentry(inode)) {
err = f2fs_read_inline_dir(file, ctx, &fstr);
goto out;
goto out_free;
}
/* readahead for multi pages of dir */
@@ -880,7 +882,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
err = 0;
continue;
} else {
goto out;
goto out_free;
}
}
@@ -900,8 +902,10 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
kunmap(dentry_page);
f2fs_put_page(dentry_page, 1);
}
out:
out_free:
fscrypt_fname_free_buffer(&fstr);
out:
trace_f2fs_readdir(inode, start_pos, ctx->pos, err);
return err < 0 ? err : 0;
}