hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8O4U8 CVE: NA
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The readahead feature of the openEuler-22.03-LTS ebpf enhancement involves interface changes and needs to be compatible with the ebpf tool of openEuler-1.0-LTS. This patch changes the _ctl_mode to _mode of fs_file_read_ctx structure.
Signed-off-by: ZhaoLong Wang wangzhaolong1@huawei.com --- fs/read_write.c | 8 ++++---- include/linux/fs.h | 10 +++++----- .../selftests/bpf/progs/file_read_pattern_prog.c | 16 ++++++++-------- 3 files changed, 17 insertions(+), 17 deletions(-)
diff --git a/fs/read_write.c b/fs/read_write.c index c22965634f54..3d69fb284d10 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1727,7 +1727,7 @@ static void fs_file_read_ctx_init(struct fs_file_read_ctx *ctx, { memset(ctx, 0, sizeof(*ctx)); ctx->name = file_dentry(filp)->d_name.name; - ctx->f_ctl_mode = filp->f_ctl_mode; + ctx->f_mode = filp->f_mode; ctx->key = (unsigned long)filp; ctx->i_size = i_size_read(file_inode(filp)); ctx->prev_index = filp->f_ra.prev_pos >> PAGE_SHIFT; @@ -1745,11 +1745,11 @@ void fs_file_read_update_args_by_trace(struct kiocb *iocb) fs_file_read_ctx_init(&ctx, filp, iocb->ki_pos); trace_fs_file_read(&ctx, FS_FILE_READ_VERSION);
- if (!ctx.set_f_ctl_mode && !ctx.clr_f_ctl_mode) + if (!ctx.set_f_mode && !ctx.clr_f_mode) return;
- filp->f_ctl_mode |= ctx.set_f_ctl_mode & FS_FILE_READ_MODE_MASK; - filp->f_ctl_mode &= ~(ctx.clr_f_ctl_mode & FS_FILE_READ_MODE_MASK); + filp->f_ctl_mode |= ctx.set_f_mode & FS_FILE_READ_MODE_MASK; + filp->f_ctl_mode &= ~(ctx.clr_f_mode & FS_FILE_READ_MODE_MASK); } EXPORT_SYMBOL_GPL(fs_file_read_update_args_by_trace); #endif diff --git a/include/linux/fs.h b/include/linux/fs.h index 839f2a6dacd6..d47063a79bcd 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -187,10 +187,10 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset, #define FMODE_BUF_WASYNC ((__force fmode_t)0x80000000)
/* File mode control flag, expect random access pattern */ -#define FMODE_CTL_RANDOM ((__force fmode_t)0x1) +#define FMODE_CTL_RANDOM ((__force fmode_t)0x1000)
/* File mode control flag, will try to read head of the file into pagecache */ -#define FMODE_CTL_WILLNEED ((__force fmode_t)0x2) +#define FMODE_CTL_WILLNEED ((__force fmode_t)0x400000)
/* * Attribute flags. These should be or-ed together to figure out what @@ -3389,12 +3389,12 @@ extern int generic_fadvise(struct file *file, loff_t offset, loff_t len,
struct fs_file_read_ctx { const unsigned char *name; - unsigned int f_ctl_mode; + unsigned int f_mode; unsigned int rsvd; /* clear from f_ctl_mode */ - unsigned int clr_f_ctl_mode; + unsigned int clr_f_mode; /* set into f_ctl_mode */ - unsigned int set_f_ctl_mode; + unsigned int set_f_mode; unsigned long key; /* file size */ long long i_size; diff --git a/tools/testing/selftests/bpf/progs/file_read_pattern_prog.c b/tools/testing/selftests/bpf/progs/file_read_pattern_prog.c index 834a68add142..17c47ed63531 100644 --- a/tools/testing/selftests/bpf/progs/file_read_pattern_prog.c +++ b/tools/testing/selftests/bpf/progs/file_read_pattern_prog.c @@ -7,17 +7,17 @@ #include <bpf/bpf_helpers.h>
/* Need to keep consistent with definitions in include/linux/fs.h */ -#define FMODE_CTL_RANDOM 0x1 -#define FMODE_CTL_WILLNEED 0x2 +#define FMODE_CTL_RANDOM 0x1000 +#define FMODE_CTL_WILLNEED 0x400000
struct fs_file_read_ctx { const unsigned char *name; - unsigned int f_ctl_mode; + unsigned int f_mode; unsigned int rsvd; /* clear from f_ctl_mode */ - unsigned int clr_f_ctl_mode; + unsigned int clr_f_mode; /* set into f_ctl_mode */ - unsigned int set_f_ctl_mode; + unsigned int set_f_mode; unsigned long key; /* file size */ long long i_size; @@ -76,7 +76,7 @@ int fs_file_read(struct fs_file_read_args *args) return 0;
if (rd_ctx->i_size <= (4 << 20)) { - rd_ctx->set_f_ctl_mode = FMODE_CTL_WILLNEED; + rd_ctx->set_f_mode = FMODE_CTL_WILLNEED; return 0; }
@@ -108,9 +108,9 @@ int fs_file_read(struct fs_file_read_args *args) if (now - hist->last_nsec >= 500000000ULL || hist->tot_nr >= 10) { if (hist->tot_nr >= 10) { if (hist->seq_nr <= hist->tot_nr * 3 / 10) - rd_ctx->set_f_ctl_mode = FMODE_CTL_RANDOM; + rd_ctx->set_f_mode = FMODE_CTL_RANDOM; else if (hist->seq_nr >= hist->tot_nr * 7 / 10) - rd_ctx->clr_f_ctl_mode = FMODE_CTL_RANDOM; + rd_ctx->clr_f_mode = FMODE_CTL_RANDOM; }
hist->last_nsec = now;