f2fs: drop exist_data for inline_data when truncated to 0
A test program gets the SEEK_DATA with two values between a new created file and the exist file on f2fs filesystem. F2FS filesystem, (the first "test1" is a new file) SEEK_DATA size != 0 (offset = 8192) SEEK_DATA size != 0 (offset = 4096) PNFS filesystem, (the first "test1" is a new file) SEEK_DATA size != 0 (offset = 4096) SEEK_DATA size != 0 (offset = 4096) int main(int argc, char **argv) { char *filename = argv[1]; int offset = 1, i = 0, fd = -1; if (argc < 2) { printf("Usage: %s f2fsfilename\n", argv[0]); return -1; } /* if (!access(filename, F_OK) || errno != ENOENT) { printf("Needs a new file for test, %m\n"); return -1; }*/ fd = open(filename, O_RDWR | O_CREAT, 0777); if (fd < 0) { printf("Create test file %s failed, %m\n", filename); return -1; } for (i = 0; i < 20; i++) { offset = 1 << i; ftruncate(fd, 0); lseek(fd, offset, SEEK_SET); write(fd, "test", 5); /* Get the alloc size by seek data equal zero*/ if (lseek(fd, 0, SEEK_DATA)) { printf("SEEK_DATA size != 0 (offset = %d)\n", offset); break; } } close(fd); return 0; } Reported-and-Tested-by: Kinglong Mee <kinglongmee@gmail.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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