Damien Le Moal ebfd68cd0c zonefs: Fix O_APPEND async write handling ... zonefs updates the size of a sequential zone file inode only on completion of direct writes. When executing asynchronous append writes (with a file open with O_APPEND or using RWF_APPEND), the use of the current inode size in generic_write_checks() to set an iocb offset thus leads to unaligned write if an application issues an append write operation with another write already being executed. Fix this problem by introducing zonefs_write_checks() as a modified version of generic_write_checks() using the file inode wp_offset for an append write iocb offset. Also introduce zonefs_write_check_limits() to replace generic_write_check_limits() call. This zonefs special helper makes sure that the maximum file limit used is the maximum size of the file being accessed. Since zonefs_write_checks() already truncates the iov_iter, the calls to iov_iter_truncate() in zonefs_file_dio_write() and zonefs_file_buffered_write() are removed. Fixes: 8dcc1a9d90 ("fs: New zonefs file system") Cc: <stable@vger.kernel.org> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>		2021-03-16 17:46:55 +09:00
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Kconfig	zonefs: select CONFIG_CRC32	2021-01-04 09:06:42 +09:00
Makefile	zonefs: add tracepoints for file operations	2021-02-16 09:59:54 +09:00
super.c	zonefs: Fix O_APPEND async write handling	2021-03-16 17:46:55 +09:00
trace.h	zonefs: add tracepoints for file operations	2021-02-16 09:59:54 +09:00
zonefs.h	zonefs: open/close zone on file open/close	2020-09-15 18:32:52 +09:00