mirror of https://gitee.com/openkylin/linux.git
7cff4b1836
Kernfs supports two styles of read: direct_read and seqfile_read.
The latter supports 'poll' correctly thanks to the update of
'->event' in kernfs_seq_show.
The former does not as '->event' is never updated on a read.
So add an appropriate update in kernfs_file_direct_read().
This was noticed because some 'md' sysfs attributes were
recently changed to use direct reads.
Reported-by: Prakash Punnoor <prakash@punnoor.de>
Reported-by: Torsten Kaiser <just.for.lkml@googlemail.com>
Fixes:
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||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| dir.c | ||
| file.c | ||
| inode.c | ||
| kernfs-internal.h | ||
| mount.c | ||
| symlink.c | ||