Commit 55847850 authored by Wu Bo's avatar Wu Bo Committed by Jaegeuk Kim
Browse files

f2fs: allocate trace path buffer from names_cache 



It would be better to use the dedicated slab to store path.

Signed-off-by: default avatarWu Bo <bo.wu@vivo.com>
Reviewed-by: default avatarChao Yu <chao@kernel.org>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent c1660d88

fs/f2fs/f2fs.h

+13 −0
Original line number Diff line number Diff line
@@ -3347,6 +3347,19 @@ static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi, 
	return kmalloc(size, flags);

}



static inline void *f2fs_getname(struct f2fs_sb_info *sbi)

{

	if (time_to_inject(sbi, FAULT_KMALLOC))

		return NULL;



	return __getname();

}



static inline void f2fs_putname(char *buf)

{

	__putname(buf);

}



static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,

					size_t size, gfp_t flags)

{

fs/f2fs/file.c

+2 −2
Original line number Diff line number Diff line
@@ -4372,7 +4372,7 @@ static void f2fs_trace_rw_file_path(struct kiocb *iocb, size_t count, int rw) 
	struct inode *inode = file_inode(iocb->ki_filp);

	char *buf, *path;



	buf = f2fs_kmalloc(F2FS_I_SB(inode), PATH_MAX, GFP_KERNEL);

	buf = f2fs_getname(F2FS_I_SB(inode));

	if (!buf)

		return;

	path = dentry_path_raw(file_dentry(iocb->ki_filp), buf, PATH_MAX);
@@ -4385,7 +4385,7 @@ static void f2fs_trace_rw_file_path(struct kiocb *iocb, size_t count, int rw) 
		trace_f2fs_dataread_start(inode, iocb->ki_pos, count,

				current->pid, path, current->comm);

free_buf:

	kfree(buf);

	f2fs_putname(buf);

}



static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *to)